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x
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ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
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¨
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TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
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Colorado
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84-0296600
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(State or other jurisdiction of incorporation or organization)
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(I.R.S. Employer Identification No.)
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1800 Larimer, Suite 1100, Denver, Colorado 80202
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||
(Address of principal executive offices)
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Large accelerated filer
¨
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Accelerated filer
¨
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Non-accelerated filer
x
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Smaller reporting company
¨
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(Do not check if smaller reporting company)
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Emerging growth company
¨
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PART I
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Item 1A —
Risk Factors
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Item 1B —
Unresolved Staff Comments
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Item 2 —
Properties
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Item 3 —
Legal Proceedings
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Item 4 —
Mine Safety Disclosures
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PART II
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Item 6 —
Selected Financial Data
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Item 9A —
Controls and Procedures
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Item 9B —
Other Information
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PART III
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Item 11 —
Executive Compensation
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Item 14 —
Principal Accountant Fees and Services
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PART IV
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Item 15 —
Exhibits, Financial Statement Schedules
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Item 16 —
Form 10-K Summary
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CPCN
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Certificate of public convenience and necessity
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CPP
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Clean Power Plan
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CWIP
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Construction work in progress
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ERCOT
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Electric Reliability Council of Texas
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ETR
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Effective tax rate
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FASB
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Financial Accounting Standards Board
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GAAP
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Generally accepted accounting principles
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GHG
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Greenhouse gas
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IRC
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Internal Revenue Code
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ITC
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Investment tax credit
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JOA
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Joint operating agreement
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MGP
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Manufactured gas plant
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MISO
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Midcontinent Independent Transmission System Operator, Inc.
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Moody’s
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Moody’s Investor Services
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MWTG
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Mountain West Transmission Group
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Native load
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Customer demand of retail and wholesale customers whereby a utility has an obligation to serve under statute or long-term contract.
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NAV
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Net asset value
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NOL
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Net operating loss
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NOx
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Nitrogen oxide
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O&M
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Operating and maintenance
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OCI
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Other comprehensive income
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PJM
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PJM Interconnection, LLC
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PM
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Particulate matter
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PPA
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Purchased power agreement
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PRP
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Potentially responsible party
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PSIA
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Pipeline system integrity adjustment
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PTC
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Production tax credit
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PV
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Photovoltaic
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R&E
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Research and experimentation
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REC
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Renewable energy credit
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ROE
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Return on equity
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RPS
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Renewable portfolio standards
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SIP
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State implementation plan
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SO
2
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Sulfur dioxide
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SPP
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Southwest Power Pool, Inc.
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Standard & Poor’s
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Standard & Poor’s Ratings Services
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TCJA
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2017 federal tax reform enacted as Public Law No: 115-97, commonly referred to as the Tax Cuts and Jobs Act
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Measurements
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|
KV
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Kilovolts
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KWh
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Kilowatt hours
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MMBtu
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Million British thermal units
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MW
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Megawatts
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MWh
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Megawatt hours
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GWh
|
Gigawatt hours
|
•
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ECA
— Recovers fuel and purchased energy costs. Short-term sales margins are shared with retail customers through the ECA. The ECA is revised quarterly.
|
•
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PCCA
— Recovers purchased capacity payments.
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•
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SCA
— Recovers the difference between PSCo’s actual cost of fuel and the amount of these costs recovered under its base steam service rates. The SCA rate is revised on a quarterly basis.
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•
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DSMCA
— Recovers DSM, interruptible service costs and performance initiatives for achieving energy savings goals.
|
•
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RESA
— Recovers the incremental costs of compliance with the RES with a maximum of two percent of the customer’s bill.
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•
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WCA
— Premium service for customers who choose to pay for renewable resources.
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•
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TCA
— Recovers costs associated with transmission investment outside of rate cases.
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•
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CACJA
— Recovers costs associated with the CACJA.
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System Peak Demand (in MW)
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||||||||||
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2017
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2016
|
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2015
|
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2018 Forecast
|
||||
PSCo
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6,671
|
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6,585
|
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6,284
|
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6,462
|
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•
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Early retirement of 660 MWs of coal-fired generation at Comanche Units 1 (2022) and 2 (2025);
|
•
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Accelerated depreciation for the early retirement of the two Comanche units and establishment of a regulatory asset to collect the incremental depreciation expense and related costs;
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•
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A RFP for up to 1,000 MW of wind, 700 MW of solar and 700 MW of natural gas and/or storage;
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•
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Utility ownership targets of 50 percent renewable generation resources and 75 percent of natural gas-fired, storage, or renewable with storage generation resources;
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•
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Reduction of the RESA rider, from two percent to one percent effective beginning 2021 or 2022; and
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•
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Construction of a new transmission switching station to further the development of renewable generating resources.
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•
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Filing an agreement between Boulder and PSCo providing permanent rights for PSCo to place and access facilities in Boulder needed to continue to serve its customers;
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•
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Filing a complete and accurate revised list of distribution assets desired to be transferred; and
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•
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Filing an agreement to address payments from Boulder to PSCo for costs of Boulder’s municipalization efforts.
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Coal
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Natural Gas
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|
Weighted
Average Owned Fuel Cost
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||||||||||||
PSCo Generating Plants
|
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Cost
|
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Percent
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|
Cost
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Percent
|
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|||||||||
2017
|
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$
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1.56
|
|
|
70
|
%
|
|
$
|
3.82
|
|
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30
|
%
|
|
$
|
2.25
|
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2016
|
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1.75
|
|
|
72
|
|
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3.79
|
|
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28
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|
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2.33
|
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|||
2015
|
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1.75
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|
|
75
|
|
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3.89
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25
|
|
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2.29
|
|
•
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At Dec. 31, 2017, PSCo’s commitments related to gas supply contracts, which expire between 2021 through 2023, were approximately $545 million and commitments related to gas transportation and storage contracts, which expire between 2018 through 2040, were approximately $620 million.
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•
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At Dec. 31, 2016, PSCo’s commitments related to gas supply contracts were approximately $654 million and commitments related to gas transportation and storage contracts were approximately $573 million.
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2017
|
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2016
|
||
Renewable
|
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27.7
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%
|
|
28.3
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%
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Wind
|
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23.7
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|
|
23.7
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Hydroelectric, biomass and solar
|
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3.9
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|
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4.6
|
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•
|
PSCo had approximately 2,560 MW of wind energy on its system at the end of 2017 and 2016. In addition to receiving purchased wind energy under these agreements, PSCo typically receives wind RECs which are used to meet state renewable resource requirements.
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•
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The average cost per MWh of wind energy under these contracts was approximately $42 in 2017 and 2016. The cost per MWh of wind energy varies by contract and may be influenced by a number of factors including regulation, state-specific renewable resource requirements, and the year of contract execution. Generally, previously executed contracts continued to benefit from improvements in wind technology, excess capacity among manufacturers, and motivation to commence new construction prior to the anticipated expiration of the federal PTCs. In December 2015, the federal PTCs were extended through 2019 with a phase down on sites that began construction in 2017.
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Year Ended Dec. 31
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||||||||||
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2017
|
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2016
|
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2015
|
|
||||||
Electric sales (Millions of KWh)
|
|
|
|
|
|
|
||||||
Residential
|
9,107
|
|
|
9,272
|
|
|
9,112
|
|
|
|||
Large commercial and industrial
|
6,449
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|
|
6,371
|
|
|
6,596
|
|
|
|||
Small commercial and industrial
|
12,796
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|
|
12,890
|
|
|
12,750
|
|
|
|||
Public authorities and other
|
274
|
|
|
268
|
|
|
242
|
|
|
|||
Total retail
|
28,626
|
|
|
28,801
|
|
|
28,700
|
|
|
|||
Sales for resale
|
4,851
|
|
|
4,672
|
|
|
3,581
|
|
|
|||
Total energy sold
|
33,477
|
|
|
33,473
|
|
|
32,281
|
|
|
|||
|
|
|
|
|
|
|
||||||
Number of customers at end of period
|
|
|
|
|
|
|
||||||
Residential
|
1,252,376
|
|
|
1,235,378
|
|
|
1,218,662
|
|
|
|||
Large commercial and industrial
|
340
|
|
|
337
|
|
|
337
|
|
|
|||
Small commercial and industrial
|
160,406
|
|
|
159,299
|
|
|
158,086
|
|
|
|||
Public authorities and other
|
54,110
|
|
|
54,048
|
|
|
53,944
|
|
|
|||
Total retail
|
1,467,232
|
|
|
1,449,062
|
|
|
1,431,029
|
|
|
|||
Wholesale
|
43
|
|
|
34
|
|
|
26
|
|
|
|||
Total customers
|
1,467,275
|
|
|
1,449,096
|
|
|
1,431,055
|
|
|
|||
|
|
|
|
|
|
|
||||||
Electric revenues (Thousands of Dollars)
|
|
|
|
|
|
|
||||||
Residential
|
$
|
1,033,324
|
|
|
$
|
1,063,526
|
|
|
$
|
1,060,626
|
|
|
Large commercial and industrial
|
421,068
|
|
|
414,797
|
|
|
433,061
|
|
|
|||
Small commercial and industrial
|
1,227,886
|
|
|
1,204,881
|
|
|
1,220,064
|
|
|
|||
Public authorities and other
|
52,834
|
|
|
54,070
|
|
|
52,783
|
|
|
|||
Total retail
|
2,735,112
|
|
|
2,737,274
|
|
|
2,766,534
|
|
|
|||
Wholesale
|
167,971
|
|
|
152,375
|
|
|
180,716
|
|
|
|||
Other electric revenues
|
100,725
|
|
|
159,703
|
|
|
168,007
|
|
|
|||
Total electric revenues
|
$
|
3,003,808
|
|
|
$
|
3,049,352
|
|
|
$
|
3,115,257
|
|
|
|
|
|
|
|
|
|
||||||
KWh sales per retail customer
|
19,510
|
|
|
19,876
|
|
|
20,055
|
|
|
|||
Revenue per retail customer
|
$
|
1,864
|
|
|
$
|
1,889
|
|
|
$
|
1,933
|
|
|
Residential revenue per KWh
|
11.35
|
|
¢
|
11.47
|
|
¢
|
11.64
|
|
¢
|
|||
Large commercial and industrial revenue per KWh
|
6.53
|
|
|
6.51
|
|
|
6.57
|
|
|
|||
Small commercial and industrial revenue per KWh
|
9.60
|
|
|
9.35
|
|
|
9.57
|
|
|
|||
Total retail revenue per KWh
|
9.55
|
|
|
9.50
|
|
|
9.64
|
|
|
|||
Wholesale revenue per KWh
|
3.46
|
|
|
3.26
|
|
|
5.05
|
|
|
|
Year Ended Dec. 31
|
||||||||||||||||
|
2017
|
|
2016
|
|
2015
|
||||||||||||
|
Millions of
KWh
|
|
Percent of
Generation
|
|
Millions of
KWh
|
|
Percent of
Generation
|
|
Millions of
KWh
|
|
Percent of
Generation
|
||||||
Coal
|
14,609
|
|
|
44
|
%
|
|
15,895
|
|
|
47
|
%
|
|
18,601
|
|
|
54
|
%
|
Natural Gas
|
9,195
|
|
|
28
|
|
|
8,632
|
|
|
25
|
|
|
7,948
|
|
|
23
|
|
Wind
(a)
|
7,804
|
|
|
24
|
|
|
8,106
|
|
|
24
|
|
|
6,699
|
|
|
19
|
|
Hydroelectric
|
624
|
|
|
2
|
|
|
1,179
|
|
|
3
|
|
|
662
|
|
|
2
|
|
Other
(b)
|
670
|
|
|
2
|
|
|
393
|
|
|
1
|
|
|
705
|
|
|
2
|
|
Total
|
32,902
|
|
|
100
|
%
|
|
34,205
|
|
|
100
|
%
|
|
34,615
|
|
|
100
|
%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
Owned generation
|
23,053
|
|
|
70
|
%
|
|
22,753
|
|
|
67
|
%
|
|
22,981
|
|
|
66
|
%
|
Purchased generation
|
9,849
|
|
|
30
|
|
|
11,452
|
|
|
33
|
|
|
11,634
|
|
|
34
|
|
Total
|
32,902
|
|
|
100
|
%
|
|
34,205
|
|
|
100
|
%
|
|
34,615
|
|
|
100
|
%
|
(a)
|
This category includes wind energy de-bundled from RECs and also includes Windsource RECs. PSCo uses RECs to meet or exceed state resource requirements and may sell surplus RECs.
|
(b)
|
Distributed generation from the Solar*Rewards program is not included, and was approximately 393, 396 and 245 million net KWh for 2017, 2016, and 2015, respectively.
|
•
|
GCA
— Recovers the actual costs of purchased natural gas and transportation to meet the requirements of its customers and is revised quarterly to allow for changes in natural gas rates.
|
•
|
DSMCA
— Recovers costs of DSM and performance initiatives to achieve various energy savings goals.
|
•
|
PSIA
— Recovers costs associated with transmission and distribution pipeline integrity management programs and two projects to replace large transmission pipelines.
|
2017
|
$
|
3.45
|
|
2016
|
3.27
|
|
|
2015
|
3.92
|
|
|
Year Ended Dec. 31
|
||||||||||
|
2017
|
|
2016
|
|
2015
|
||||||
Natural gas deliveries (Thousands of MMBtu)
|
|
|
|
|
|
||||||
Residential
|
88,843
|
|
|
90,941
|
|
|
92,001
|
|
|||
Commercial and industrial
|
37,305
|
|
|
38,093
|
|
|
38,405
|
|
|||
Total retail
|
126,148
|
|
|
129,034
|
|
|
130,406
|
|
|||
Transportation and other
|
124,211
|
|
|
117,462
|
|
|
108,860
|
|
|||
Total deliveries
|
250,359
|
|
|
246,496
|
|
|
239,266
|
|
|||
|
|
|
|
|
|
||||||
Number of customers at end of period
|
|
|
|
|
|
||||||
Residential
|
1,284,644
|
|
|
1,269,338
|
|
|
1,254,056
|
|
|||
Commercial and industrial
|
100,802
|
|
|
100,718
|
|
|
100,389
|
|
|||
Total retail
|
1,385,446
|
|
|
1,370,056
|
|
|
1,354,445
|
|
|||
Transportation and other
|
7,649
|
|
|
7,261
|
|
|
6,936
|
|
|||
Total customers
|
1,393,095
|
|
|
1,377,317
|
|
|
1,361,381
|
|
|||
|
|
|
|
|
|
||||||
Natural gas revenues (Thousands of Dollars)
|
|
|
|
|
|
||||||
Residential
|
$
|
652,913
|
|
|
$
|
611,804
|
|
|
$
|
678,909
|
|
Commercial and industrial
|
247,582
|
|
|
228,103
|
|
|
257,287
|
|
|||
Total retail
|
900,495
|
|
|
839,907
|
|
|
936,196
|
|
|||
Transportation and other
|
94,719
|
|
|
117,814
|
|
|
70,470
|
|
|||
Total natural gas revenues
|
$
|
995,214
|
|
|
$
|
957,721
|
|
|
$
|
1,006,666
|
|
|
|
|
|
|
|
||||||
MMBtu sales per retail customer
|
91.05
|
|
|
94.18
|
|
|
96.28
|
|
|||
Revenue per retail customer
|
$
|
650
|
|
|
$
|
613
|
|
|
$
|
691
|
|
Residential revenue per MMBtu
|
7.35
|
|
|
6.73
|
|
|
7.38
|
|
|||
Commercial and industrial revenue per MMBtu
|
6.64
|
|
|
5.99
|
|
|
6.70
|
|
|||
Transportation and other revenue per MMBtu
|
0.76
|
|
|
1.00
|
|
|
0.65
|
|
Electric Utility Generating Stations:
|
|
|
|
|
|
|
|
|
Station, Location and Unit |
|
Fuel
|
|
Installed
|
|
Summer 2017
Net Dependable Capability (MW) |
|
|
Steam:
|
|
|
|
|
|
|
|
|
Comanche-Pueblo, Colo.
|
|
|
|
|
|
|
|
|
Unit 1
|
|
Coal
|
|
1973
|
|
325
|
|
|
Unit 2
|
|
Coal
|
|
1975
|
|
335
|
|
|
Unit 3
|
|
Coal
|
|
2010
|
|
500
|
|
(a)
|
Craig-Craig, Colo., 2 Units
|
|
Coal
|
|
1979-1980
|
|
83
|
|
(b)
|
Hayden-Hayden, Colo., 2 Units
|
|
Coal
|
|
1965-1976
|
|
233
|
|
(c)
|
Pawnee-Brush, Colo., 1 Unit
|
|
Coal
|
|
1981
|
|
505
|
|
|
Valmont-Boulder, Colo., 1 Unit
|
|
Coal
|
|
1964
|
|
—
|
|
(d)
|
Combustion Turbine:
|
|
|
|
|
|
|
|
|
Blue Spruce-Aurora, Colo., 2 Units
|
|
Natural Gas
|
|
2003
|
|
264
|
|
|
Cherokee-Denver, Colo., 1 Unit
|
|
Natural Gas
|
|
1968
|
|
310
|
|
(e)
|
Cherokee-Denver, Colo., 3 Units
|
|
Natural Gas
|
|
2015
|
|
576
|
|
|
Fort St. Vrain-Platteville, Colo., 6 Units
|
|
Natural Gas
|
|
1972-2009
|
|
968
|
|
|
Rocky Mountain-Keenesburg, Colo., 3 Units
|
|
Natural Gas
|
|
2004
|
|
580
|
|
|
Various locations, 6 Units
|
|
Natural Gas
|
|
Various
|
|
171
|
|
|
Hydro:
|
|
|
|
|
|
|
|
|
Cabin Creek-Georgetown, Colo.
|
|
|
|
|
|
|
|
|
Pumped Storage, 2 Units
|
|
Hydro
|
|
1967
|
|
210
|
|
|
Various locations, 9 Units
|
|
Hydro
|
|
Various
|
|
26
|
|
|
|
|
|
|
Total
|
|
5,086
|
|
|
(a)
|
Based on PSCo’s ownership interest of
67 percent
of Unit 3.
|
(b)
|
Based on PSCo’s ownership interest of
10 percent
. Craig Unit 1 is expected to be early retired in approximately 2025.
|
(c)
|
Based on PSCo’s ownership interest of
76 percent
of Unit 1 and
37 percent
of Unit 2.
|
(d)
|
Valmont Unit 5 was retired in the third quarter of 2017.
|
(e)
|
Cherokee Unit 4 was fuel switched from coal to natural gas in the third quarter of 2017.
|
Miles
|
|
|
Transmission
|
2,315
|
|
Distribution
|
22,540
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
First quarter
|
|
$
|
87,104
|
|
|
$
|
83,914
|
|
Second quarter
|
|
83,978
|
|
|
86,509
|
|
||
Third quarter
|
|
88,589
|
|
|
82,785
|
|
||
Fourth quarter
|
|
76,195
|
|
|
74,208
|
|
(Millions of Dollars)
|
|
2017
|
|
2016
|
||||
Electric revenues
|
|
$
|
3,004
|
|
|
$
|
3,049
|
|
Electric fuel and purchased power
|
|
(1,127
|
)
|
|
(1,196
|
)
|
||
Electric margin
|
|
$
|
1,877
|
|
|
$
|
1,853
|
|
(Millions of Dollars)
|
|
2017 vs. 2016
|
||
Fuel and purchased power cost recovery
|
|
$
|
(58
|
)
|
DSM program revenues (offset by expenses)
|
|
6
|
|
|
Non-fuel riders
|
|
5
|
|
|
Other, net
|
|
2
|
|
|
Total decrease in electric revenues
|
|
$
|
(45
|
)
|
(Millions of Dollars)
|
|
2017 vs. 2016
|
||
DSM program revenues (offset by expenses)
|
|
$
|
6
|
|
Non-fuel riders
|
|
5
|
|
|
Earnings test
|
|
3
|
|
|
Fuel handling and procurement
|
|
3
|
|
|
Trading
|
|
3
|
|
|
Other, net
|
|
4
|
|
|
Total increase in electric margin
|
|
$
|
24
|
|
(Millions of Dollars)
|
|
2017
|
|
2016
|
||||
Natural gas revenues
|
|
$
|
995
|
|
|
$
|
958
|
|
Cost of natural gas sold and transported
|
|
(459
|
)
|
|
(425
|
)
|
||
Natural gas margin
|
|
$
|
536
|
|
|
$
|
533
|
|
(Millions of Dollars)
|
|
2017 vs. 2016
|
||
Purchased natural gas adjustment clause recovery
|
|
$
|
32
|
|
Infrastructure and integrity riders
|
|
13
|
|
|
Estimated impact of weather
|
|
(4
|
)
|
|
Retail rate decrease
|
|
(4
|
)
|
|
Total increase in natural gas revenues
|
|
$
|
37
|
|
(Millions of Dollars)
|
|
2017 vs. 2016
|
||
Infrastructure and integrity riders
|
|
$
|
13
|
|
Estimated impact of weather
|
|
(4
|
)
|
|
Retail rate decrease
|
|
(4
|
)
|
|
Other, net
|
|
(2
|
)
|
|
Total increase in natural gas margin
|
|
$
|
3
|
|
|
|
Futures / Forwards
|
|||||||||||||||||||||
(Thousands of Dollars)
|
|
Source of
Fair Value
|
|
Maturity
Less Than
1 Year
|
|
Maturity
1 to 3
Years
|
|
Maturity
4 to 5
Years
|
|
Maturity
Greater Than
5 Years
|
|
Total Futures/
Forwards
Fair Value
|
|||||||||||
PSCo
|
|
1
|
|
|
$
|
291
|
|
|
$
|
179
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
470
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Fair value of commodity trading net contract assets outstanding at Jan. 1
|
|
$
|
(188
|
)
|
|
$
|
112
|
|
Contracts realized or settled during the period
|
|
(775
|
)
|
|
(654
|
)
|
||
Commodity trading contract additions and changes during the period
|
|
1,433
|
|
|
354
|
|
||
Fair value of commodity trading net contract assets outstanding at Dec. 31
|
|
$
|
470
|
|
|
$
|
(188
|
)
|
(Millions of Dollars)
|
|
Year Ended
Dec. 31
|
|
VaR Limit
|
|
Average
|
|
High
|
|
Low
|
||||||||||
2017
|
|
$
|
0.18
|
|
|
$
|
3.00
|
|
|
$
|
0.21
|
|
|
$
|
0.66
|
|
|
$
|
0.04
|
|
2016
|
|
0.09
|
|
|
3.00
|
|
|
0.16
|
|
|
0.38
|
|
|
|
0.05
|
|
/s/ BEN FOWKE
|
|
/s/ ROBERT C. FRENZEL
|
Ben Fowke
|
|
Robert C. Frenzel
|
Chairman and Chief Executive Officer
|
|
Executive Vice President, Chief Financial Officer
|
Feb. 23, 2018
|
|
Feb. 23, 2018
|
/s/
DELOITTE & TOUCHE LLP
|
|
Minneapolis, Minnesota
|
|
February 23, 2018
|
|
|
Year Ended Dec. 31
|
||||||||||
|
2017
|
|
2016
|
|
2015
|
||||||
Operating revenues
|
|
|
|
|
|
||||||
Electric
|
$
|
3,003,808
|
|
|
$
|
3,049,352
|
|
|
$
|
3,115,257
|
|
Natural gas
|
995,214
|
|
|
957,721
|
|
|
1,006,666
|
|
|||
Steam and other
|
43,487
|
|
|
40,723
|
|
|
41,590
|
|
|||
Total operating revenues
|
4,042,509
|
|
|
4,047,796
|
|
|
4,163,513
|
|
|||
|
|
|
|
|
|
||||||
Operating expenses
|
|
|
|
|
|
||||||
Electric fuel and purchased power
|
1,126,660
|
|
|
1,196,417
|
|
|
1,246,666
|
|
|||
Cost of natural gas sold and transported
|
458,717
|
|
|
425,410
|
|
|
501,824
|
|
|||
Cost of sales — steam and other
|
16,146
|
|
|
15,872
|
|
|
17,788
|
|
|||
Operating and maintenance expenses
|
762,817
|
|
|
762,416
|
|
|
761,901
|
|
|||
Demand side management program expenses
|
125,029
|
|
|
118,175
|
|
|
128,681
|
|
|||
Depreciation and amortization
|
471,515
|
|
|
443,555
|
|
|
411,667
|
|
|||
Taxes (other than income taxes)
|
195,695
|
|
|
196,330
|
|
|
195,285
|
|
|||
Total operating expenses
|
3,156,579
|
|
|
3,158,175
|
|
|
3,263,812
|
|
|||
|
|
|
|
|
|
||||||
Operating income
|
885,930
|
|
|
889,621
|
|
|
899,701
|
|
|||
|
|
|
|
|
|
||||||
Other income, net
|
9,852
|
|
|
3,817
|
|
|
2,964
|
|
|||
Allowance for funds used during construction — equity
|
29,803
|
|
|
18,557
|
|
|
14,485
|
|
|||
|
|
|
|
|
|
||||||
Interest charges and financing costs
|
|
|
|
|
|
||||||
Interest charges — includes other financing costs of
$6,281, $6,289 and $6,285, respectively
|
190,694
|
|
|
181,631
|
|
|
177,430
|
|
|||
Allowance for funds used during construction — debt
|
(11,407
|
)
|
|
(7,045
|
)
|
|
(5,522
|
)
|
|||
Total interest charges and financing costs
|
179,287
|
|
|
174,586
|
|
|
171,908
|
|
|||
|
|
|
|
|
|
||||||
Income before income taxes
|
746,298
|
|
|
737,409
|
|
|
745,242
|
|
|||
Income taxes
|
252,179
|
|
|
273,918
|
|
|
278,440
|
|
|||
Net income
|
$
|
494,119
|
|
|
$
|
463,491
|
|
|
$
|
466,802
|
|
|
|
Year Ended Dec. 31
|
||||||||||
|
|
2017
|
|
2016
|
|
2015
|
||||||
Net income
|
|
$
|
494,119
|
|
|
$
|
463,491
|
|
|
$
|
466,802
|
|
|
|
|
|
|
|
|
||||||
Other comprehensive income (loss)
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
||||||
Pension and retiree medical benefits:
|
|
|
|
|
|
|
||||||
Net pension and retiree medical losses arising during the period, net of tax of $(3), $(138), and $0
|
|
(5
|
)
|
|
(223
|
)
|
|
—
|
|
|||
Amortization of losses included in net periodic benefit cost, net of tax of $4, $2, and $0, respectively
|
|
5
|
|
|
3
|
|
|
—
|
|
|||
|
|
—
|
|
|
(220
|
)
|
|
—
|
|
|||
|
|
|
|
|
|
|
||||||
Derivative instruments:
|
|
|
|
|
|
|
||||||
Net fair value decrease, net of tax of $0, $0, and $(20), respectively
|
|
—
|
|
|
—
|
|
|
(30
|
)
|
|||
Reclassification of losses to net income, net of tax of $610, $648, and $39, respectively
|
|
1,005
|
|
|
1,056
|
|
|
72
|
|
|||
|
|
1,005
|
|
|
1,056
|
|
|
42
|
|
|||
|
|
|
|
|
|
|
||||||
Other comprehensive income
|
|
1,005
|
|
|
836
|
|
|
42
|
|
|||
Comprehensive income
|
|
$
|
495,124
|
|
|
$
|
464,327
|
|
|
$
|
466,844
|
|
|
Year Ended Dec. 31
|
||||||||||
|
2017
|
|
2016
|
|
2015
|
||||||
Operating activities
|
|
|
|
|
|
||||||
Net income
|
$
|
494,119
|
|
|
$
|
463,491
|
|
|
$
|
466,802
|
|
Adjustments to reconcile net income to cash provided by operating activities:
|
|
|
|
|
|
||||||
Depreciation and amortization
|
475,592
|
|
|
446,179
|
|
|
416,427
|
|
|||
Demand side management program amortization
|
672
|
|
|
2,138
|
|
|
3,509
|
|
|||
Deferred income taxes
|
207,817
|
|
|
222,002
|
|
|
277,896
|
|
|||
Amortization of investment tax credits
|
(2,803
|
)
|
|
(2,805
|
)
|
|
(2,807
|
)
|
|||
Allowance for equity funds used during construction
|
(29,803
|
)
|
|
(18,557
|
)
|
|
(14,485
|
)
|
|||
Provision for bad debts
|
14,303
|
|
|
14,121
|
|
|
13,052
|
|
|||
Net realized and unrealized hedging and derivative transactions
|
2,364
|
|
|
1,325
|
|
|
2,414
|
|
|||
Other
|
6
|
|
|
(388
|
)
|
|
2,500
|
|
|||
Changes in operating assets and liabilities:
|
|
|
|
|
|
||||||
Accounts receivable
|
(2,229
|
)
|
|
(14,227
|
)
|
|
8,872
|
|
|||
Accrued unbilled revenues
|
1,277
|
|
|
(20,866
|
)
|
|
17,837
|
|
|||
Inventories
|
(9,099
|
)
|
|
172
|
|
|
33,417
|
|
|||
Prepayments and other
|
188
|
|
|
68,693
|
|
|
10,483
|
|
|||
Accounts payable
|
20,410
|
|
|
38,439
|
|
|
(40,982
|
)
|
|||
Net regulatory assets and liabilities
|
(22,548
|
)
|
|
4,143
|
|
|
78,055
|
|
|||
Other current liabilities
|
71,776
|
|
|
1,892
|
|
|
19,654
|
|
|||
Pension and other employee benefit obligations
|
(16,515
|
)
|
|
(10,627
|
)
|
|
(23,449
|
)
|
|||
Change in other noncurrent assets
|
(785
|
)
|
|
(6,750
|
)
|
|
4,086
|
|
|||
Change in other noncurrent liabilities
|
(2,982
|
)
|
|
(22,120
|
)
|
|
(35,334
|
)
|
|||
Net cash provided by operating activities
|
1,201,760
|
|
|
1,166,255
|
|
|
1,237,947
|
|
|||
|
|
|
|
|
|
||||||
Investing activities
|
|
|
|
|
|
||||||
Utility capital/construction expenditures
|
(1,475,697
|
)
|
|
(1,113,800
|
)
|
|
(995,597
|
)
|
|||
Proceeds from insurance recoveries
|
—
|
|
|
608
|
|
|
—
|
|
|||
Allowance for equity funds used during construction
|
29,803
|
|
|
18,557
|
|
|
14,485
|
|
|||
Investments in utility money pool arrangement
|
(954,000
|
)
|
|
(444,000
|
)
|
|
(196,300
|
)
|
|||
Repayments from utility money pool arrangement
|
934,000
|
|
|
444,000
|
|
|
212,300
|
|
|||
Other
|
(657
|
)
|
|
(1,460
|
)
|
|
—
|
|
|||
Net cash used in investing activities
|
(1,466,551
|
)
|
|
(1,096,095
|
)
|
|
(965,112
|
)
|
|||
|
|
|
|
|
|
||||||
Financing activities
|
|
|
|
|
|
||||||
(Repayments of) proceeds from short-term borrowings, net
|
(129,000
|
)
|
|
115,000
|
|
|
(368,000
|
)
|
|||
Borrowings under utility money pool arrangement
|
40,000
|
|
|
524,500
|
|
|
165,000
|
|
|||
Repayments under utility money pool arrangement
|
(40,000
|
)
|
|
(524,500
|
)
|
|
(165,000
|
)
|
|||
Proceeds from issuance of long-term debt
|
393,791
|
|
|
244,507
|
|
|
246,751
|
|
|||
Repayments of long-term debt
|
—
|
|
|
(129,500
|
)
|
|
—
|
|
|||
Capital contributions from parent
|
335,576
|
|
|
38,755
|
|
|
175,210
|
|
|||
Dividends paid to parent
|
(333,879
|
)
|
|
(336,581
|
)
|
|
(330,846
|
)
|
|||
Other
|
(110
|
)
|
|
—
|
|
|
—
|
|
|||
Net cash provided by (used in) financing activities
|
266,378
|
|
|
(67,819
|
)
|
|
(276,885
|
)
|
|||
|
|
|
|
|
|
||||||
Net change in cash and cash equivalents
|
1,587
|
|
|
2,341
|
|
|
(4,050
|
)
|
|||
Cash and cash equivalents at beginning of period
|
5,926
|
|
|
3,585
|
|
|
7,635
|
|
|||
Cash and cash equivalents at end of period
|
$
|
7,513
|
|
|
$
|
5,926
|
|
|
$
|
3,585
|
|
|
|
|
|
|
|
||||||
Supplemental disclosure of cash flow information:
|
|
|
|
|
|
||||||
Cash paid for interest (net of amounts capitalized)
|
$
|
(174,978
|
)
|
|
$
|
(171,714
|
)
|
|
$
|
(165,546
|
)
|
Cash (paid) received for income taxes, net
|
(7,717
|
)
|
|
22,827
|
|
|
13,822
|
|
|||
Supplemental disclosure of non-cash investing transactions:
|
|
|
|
|
|
||||||
Property, plant and equipment additions in accounts payable
|
$
|
183,858
|
|
|
$
|
68,870
|
|
|
$
|
106,912
|
|
|
Dec. 31
|
||||||
|
2017
|
|
2016
|
||||
Assets
|
|
|
|
||||
Current assets
|
|
|
|
||||
Cash and cash equivalents
|
$
|
7,513
|
|
|
$
|
5,926
|
|
Accounts receivable, net
|
294,403
|
|
|
304,900
|
|
||
Accounts receivable from affiliates
|
14,719
|
|
|
9,421
|
|
||
Investments in utility money pool arrangement
|
20,000
|
|
|
—
|
|
||
Accrued unbilled revenues
|
295,801
|
|
|
297,078
|
|
||
Inventories
|
214,489
|
|
|
202,220
|
|
||
Regulatory assets
|
77,337
|
|
|
103,783
|
|
||
Derivative instruments
|
3,197
|
|
|
10,934
|
|
||
Prepayments and other
|
35,720
|
|
|
34,559
|
|
||
Total current assets
|
963,179
|
|
|
968,821
|
|
||
|
|
|
|
||||
Property, plant and equipment, net
|
14,025,751
|
|
|
12,849,799
|
|
||
|
|
|
|
||||
Other assets
|
|
|
|
|
|
||
Regulatory assets
|
950,258
|
|
|
958,429
|
|
||
Derivative instruments
|
1,009
|
|
|
3,398
|
|
||
Other
|
27,429
|
|
|
25,637
|
|
||
Total other assets
|
978,696
|
|
|
987,464
|
|
||
Total assets
|
$
|
15,967,626
|
|
|
$
|
14,806,084
|
|
|
|
|
|
||||
Liabilities and Equity
|
|
|
|
|
|
||
Current liabilities
|
|
|
|
|
|
||
Current portion of long-term debt
|
$
|
305,577
|
|
|
$
|
5,270
|
|
Short-term debt
|
—
|
|
|
129,000
|
|
||
Accounts payable
|
492,829
|
|
|
376,186
|
|
||
Accounts payable to affiliates
|
58,749
|
|
|
98,797
|
|
||
Regulatory liabilities
|
66,126
|
|
|
101,110
|
|
||
Taxes accrued
|
222,517
|
|
|
171,862
|
|
||
Accrued interest
|
48,552
|
|
|
48,619
|
|
||
Dividends payable to parent
|
76,195
|
|
|
74,208
|
|
||
Derivative instruments
|
7,348
|
|
|
6,788
|
|
||
Other
|
92,333
|
|
|
73,022
|
|
||
Total current liabilities
|
1,370,226
|
|
|
1,084,862
|
|
||
|
|
|
|
||||
Deferred credits and other liabilities
|
|
|
|
|
|
||
Deferred income taxes
|
1,644,476
|
|
|
2,889,129
|
|
||
Deferred investment tax credits
|
27,858
|
|
|
30,661
|
|
||
Regulatory liabilities
|
1,933,488
|
|
|
512,933
|
|
||
Asset retirement obligations
|
347,769
|
|
|
289,563
|
|
||
Derivative instruments
|
3,468
|
|
|
7,828
|
|
||
Customer advances
|
162,614
|
|
|
162,742
|
|
||
Pension and employee benefit obligations
|
287,783
|
|
|
285,774
|
|
||
Other
|
58,923
|
|
|
62,201
|
|
||
Total deferred credits and other liabilities
|
4,466,379
|
|
|
4,240,831
|
|
||
|
|
|
|
||||
Commitments and contingencies
|
|
|
|
|
|
||
Capitalization
|
|
|
|
|
|
||
Long-term debt
|
4,302,698
|
|
|
4,210,936
|
|
||
Common stock — 100 shares authorized of $0.01 par value; 100 shares
outstanding at Dec. 31, 2017 and 2016, respectively
|
—
|
|
|
—
|
|
||
Additional paid in capital
|
4,032,826
|
|
|
3,633,216
|
|
||
Retained earnings
|
1,822,229
|
|
|
1,659,239
|
|
||
Accumulated other comprehensive loss
|
(26,732
|
)
|
|
(23,000
|
)
|
||
Total common stockholder’s equity
|
5,828,323
|
|
|
5,269,455
|
|
||
Total liabilities and equity
|
$
|
15,967,626
|
|
|
$
|
14,806,084
|
|
|
Common Stock Issued
|
|
|
|
Accumulated
Other
Comprehensive
Income (Loss)
|
|
Total
Common
Stockholder’s
Equity
|
|||||||||||||||
|
Shares
|
|
Par Value
|
|
Additional
Paid In
Capital
|
|
Retained
Earnings
|
|
|
|||||||||||||
Balance at Dec. 31, 2014
|
100
|
|
|
$
|
—
|
|
|
$
|
3,522,788
|
|
|
$
|
1,386,929
|
|
|
$
|
(23,878
|
)
|
|
$
|
4,885,839
|
|
Net income
|
|
|
|
|
|
|
466,802
|
|
|
|
|
466,802
|
|
|||||||||
Other comprehensive income
|
|
|
|
|
|
|
|
|
42
|
|
|
42
|
|
|||||||||
Common dividends declared to parent
|
|
|
|
|
|
|
(330,567
|
)
|
|
|
|
(330,567
|
)
|
|||||||||
Contribution of capital by parent
|
|
|
|
|
98,036
|
|
|
|
|
|
|
98,036
|
|
|||||||||
Balance at Dec. 31, 2015
|
100
|
|
|
$
|
—
|
|
|
$
|
3,620,824
|
|
|
$
|
1,523,164
|
|
|
$
|
(23,836
|
)
|
|
$
|
5,120,152
|
|
Net income
|
|
|
|
|
|
|
463,491
|
|
|
|
|
463,491
|
|
|||||||||
Other comprehensive income
|
|
|
|
|
|
|
|
|
836
|
|
|
836
|
|
|||||||||
Common dividends declared to parent
|
|
|
|
|
|
|
(327,416
|
)
|
|
|
|
(327,416
|
)
|
|||||||||
Contribution of capital by parent
|
|
|
|
|
12,392
|
|
|
|
|
|
|
12,392
|
|
|||||||||
Balance at Dec. 31, 2016
|
100
|
|
|
$
|
—
|
|
|
$
|
3,633,216
|
|
|
$
|
1,659,239
|
|
|
$
|
(23,000
|
)
|
|
$
|
5,269,455
|
|
Net income
|
|
|
|
|
|
|
494,119
|
|
|
|
|
494,119
|
|
|||||||||
Other comprehensive income
|
|
|
|
|
|
|
|
|
1,005
|
|
|
1,005
|
|
|||||||||
Common dividends declared to parent
|
|
|
|
|
|
|
(335,866
|
)
|
|
|
|
(335,866
|
)
|
|||||||||
Contribution of capital by parent
|
|
|
|
|
399,610
|
|
|
|
|
|
|
399,610
|
|
|||||||||
Adoption of ASU No. 2018-02
|
|
|
|
|
|
|
4,737
|
|
|
(4,737
|
)
|
|
—
|
|
||||||||
Balance at Dec. 31, 2017
|
100
|
|
|
$
|
—
|
|
|
$
|
4,032,826
|
|
|
$
|
1,822,229
|
|
|
$
|
(26,732
|
)
|
|
$
|
5,828,323
|
|
|
Dec. 31
|
||||||
|
2017
|
|
2016
|
||||
Long-Term Debt
|
|
|
|
||||
First Mortgage Bonds, Series due:
|
|
|
|
||||
Aug. 1, 2018, 5.8%
|
$
|
300,000
|
|
|
$
|
300,000
|
|
June 1, 2019, 5.125%
|
400,000
|
|
|
400,000
|
|
||
Nov. 15, 2020, 3.2%
|
400,000
|
|
|
400,000
|
|
||
Sept. 15, 2022, 2.25%
|
300,000
|
|
|
300,000
|
|
||
March 15, 2023, 2.5%
|
250,000
|
|
|
250,000
|
|
||
May 15, 2025, 2.9%
|
250,000
|
|
|
250,000
|
|
||
Sept. 1, 2037, 6.25%
|
350,000
|
|
|
350,000
|
|
||
Aug. 1, 2038, 6.5%
|
300,000
|
|
|
300,000
|
|
||
Aug. 15, 2041, 4.75%
|
250,000
|
|
|
250,000
|
|
||
Sept. 15, 2042, 3.6%
|
500,000
|
|
|
500,000
|
|
||
March 15, 2043, 3.95%
|
250,000
|
|
|
250,000
|
|
||
March 15, 2044, 4.3%
|
300,000
|
|
|
300,000
|
|
||
June 15, 2046, 3.55%
|
250,000
|
|
|
250,000
|
|
||
June 15, 2047, 3.8%
|
400,000
|
|
|
—
|
|
||
Capital lease obligations, through 2060, 11.2% — 14.3%
|
150,658
|
|
|
155,927
|
|
||
Unamortized discount
|
(13,472
|
)
|
|
(12,922
|
)
|
||
Unamortized debt expense
|
(28,911
|
)
|
|
(26,799
|
)
|
||
Total
|
4,608,275
|
|
|
4,216,206
|
|
||
Less current maturities
|
305,577
|
|
|
5,270
|
|
||
Total long-term debt
|
$
|
4,302,698
|
|
|
$
|
4,210,936
|
|
|
|
|
|
||||
Common Stockholder’s Equity
|
|
|
|
|
|
||
Common Stock — 100 shares authorized of $0.01 par value; 100 shares
outstanding at Dec. 31, 2017 and 2016, respectively.
|
$
|
—
|
|
|
$
|
—
|
|
Additional paid-in capital
|
4,032,826
|
|
|
3,633,216
|
|
||
Retained earnings
|
1,822,229
|
|
|
1,659,239
|
|
||
Accumulated other comprehensive loss
|
(26,732
|
)
|
|
(23,000
|
)
|
||
Total common stockholder’s equity
|
$
|
5,828,323
|
|
|
$
|
5,269,455
|
|
1.
|
Summary of Significant Accounting Policies
|
•
|
Certain costs, which would otherwise be charged to expense or OCI, are deferred as regulatory assets based on the expected ability to recover the costs in future rates; and
|
•
|
Certain credits, which would otherwise be reflected as income or OCI, are deferred as regulatory liabilities based on the expectation the amounts will be returned to customers in future rates, or because the amounts were collected in rates prior to the costs being incurred.
|
2.
|
Accounting Pronouncements
|
3.
|
Selected Balance Sheet Data
|
(Thousands of Dollars)
|
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
||||
Accounts receivable, net
|
|
|
|
|
||||
Accounts receivable
|
|
$
|
314,009
|
|
|
$
|
324,512
|
|
Less allowance for bad debts
|
|
(19,606
|
)
|
|
(19,612
|
)
|
||
|
|
$
|
294,403
|
|
|
$
|
304,900
|
|
(Thousands of Dollars)
|
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
||||
Inventories
|
|
|
|
|
||||
Materials and supplies
|
|
$
|
68,940
|
|
|
$
|
66,161
|
|
Fuel
|
|
73,893
|
|
|
66,429
|
|
||
Natural gas
|
|
71,656
|
|
|
69,630
|
|
||
|
|
$
|
214,489
|
|
|
$
|
202,220
|
|
(Thousands of Dollars)
|
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
||||
Property, plant and equipment, net
|
|
|
|
|
||||
Electric plant
|
|
$
|
12,627,592
|
|
|
$
|
12,304,436
|
|
Natural gas plant
|
|
4,102,075
|
|
|
3,710,772
|
|
||
Common and other property
|
|
1,022,333
|
|
|
919,955
|
|
||
Plant to be retired
(a)
|
|
10,949
|
|
|
31,839
|
|
||
Construction work in progress
|
|
1,014,338
|
|
|
484,340
|
|
||
Total property, plant and equipment
|
|
18,777,287
|
|
|
17,451,342
|
|
||
Less accumulated depreciation
|
|
(4,751,536
|
)
|
|
(4,601,543
|
)
|
||
|
|
$
|
14,025,751
|
|
|
$
|
12,849,799
|
|
(a)
|
In the third quarter of 2017, PSCo early retired Valmont Unit 5 and converted Cherokee Unit 4 from a coal-fueled generating facility to natural gas. PSCo also expects Craig Unit 1 to be early retired in approximately 2025. Amounts are presented net of accumulated depreciation.
|
4.
|
Borrowings and Other Financing Instruments
|
(Amounts in Millions, Except Interest Rates)
|
|
Twelve Months Ended Dec. 31, 2017
|
|
Twelve Months Ended Dec. 31, 2016
|
|
Twelve Months Ended Dec. 31, 2015
|
||||||
Borrowing limit
|
|
$
|
250
|
|
|
$
|
250
|
|
|
$
|
250
|
|
Amount outstanding at period end
|
|
—
|
|
|
—
|
|
|
—
|
|
|||
Average amount outstanding
|
|
—
|
|
|
21
|
|
|
1
|
|
|||
Maximum amount outstanding
|
|
20
|
|
|
141
|
|
|
34
|
|
|||
Weighted average interest rate, computed on a daily basis
|
|
0.92
|
%
|
|
0.73
|
%
|
|
0.41
|
%
|
|||
Weighted average interest rate at period end
|
|
N/A
|
|
|
N/A
|
|
|
N/A
|
|
(Amounts in Millions, Except Interest Rates)
|
|
Twelve Months Ended Dec. 31, 2017
|
|
Twelve Months Ended Dec. 31, 2016
|
|
Twelve Months Ended Dec. 31, 2015
|
||||||
Borrowing limit
|
|
$
|
700
|
|
|
$
|
700
|
|
|
$
|
700
|
|
Amount outstanding at period end
|
|
—
|
|
|
129
|
|
|
14
|
|
|||
Average amount outstanding
|
|
54
|
|
|
24
|
|
|
95
|
|
|||
Maximum amount outstanding
|
|
268
|
|
|
154
|
|
|
449
|
|
|||
Weighted average interest rate, computed on a daily basis
|
|
1.08
|
%
|
|
0.70
|
%
|
|
0.51
|
%
|
|||
Weighted average interest rate at period end
|
|
N/A
|
|
|
0.95
|
|
|
0.60
|
|
•
|
PSCo may increase its credit facility by up to
$100 million
.
|
•
|
The credit facility has a financial covenant requiring that the debt-to-total capitalization ratio be less than or equal to
65 percent
. PSCo was in compliance as its debt-to-total capitalization ratio was
44 percent
and
45 percent
at
Dec. 31, 2017
and 2016, respectively. If PSCo does not comply with the covenant, an event of default may be declared, and if not remedied, any outstanding amounts due under the facility can be declared due by the lender.
|
•
|
The credit facility has a cross-default provision that provides PSCo will be in default on its borrowings under the facility if PSCo or any of its subsidiaries whose total assets exceed
15 percent
of PSCo’s consolidated total assets, default on certain indebtedness in an aggregate principal amount exceeding
$75 million
.
|
•
|
PSCo was in compliance with all financial covenants on its debt agreements as of Dec. 31, 2017 and 2016.
|
Credit Facility
(a)
|
|
Drawn
(b)
|
|
Available
|
||||||
$
|
700
|
|
|
$
|
3
|
|
|
$
|
697
|
|
(a)
|
This credit facility matures in
June 2021
.
|
(b)
|
Includes letters of credit.
|
5.
|
Preferred Stock
|
Preferred
Shares Authorized |
|
Par Value
|
|
Preferred
Shares Outstanding |
||||
10,000,000
|
|
|
$
|
0.01
|
|
|
None
|
|
6.
|
Joint Ownership of Generation, Transmission and Gas Facilities
|
(Thousands of Dollars)
|
|
Plant in
Service
|
|
Accumulated
Depreciation |
|
CWIP
|
|
Ownership %
|
|||||||
Electric Generation:
|
|
|
|
|
|
|
|
|
|||||||
Hayden Unit 1
|
|
$
|
150,441
|
|
|
$
|
72,042
|
|
|
$
|
830
|
|
|
76
|
%
|
Hayden Unit 2
|
|
148,694
|
|
|
65,493
|
|
|
18
|
|
|
37
|
|
|||
Hayden Common Facilities
|
|
39,321
|
|
|
19,886
|
|
|
97
|
|
|
53
|
|
|||
Craig Units 1 and 2
|
|
80,650
|
|
|
38,666
|
|
|
—
|
|
|
10
|
|
|||
Craig Common Facilities 1, 2 and 3
|
|
38,902
|
|
|
20,116
|
|
|
—
|
|
|
7
|
|
|||
Comanche Unit 3
|
|
889,630
|
|
|
117,759
|
|
|
476
|
|
|
67
|
|
|||
Comanche Common Facilities
|
|
24,421
|
|
|
2,092
|
|
|
2,809
|
|
|
82
|
|
|||
Electric Transmission:
|
|
|
|
|
|
|
|
|
|||||||
Transmission and other facilities, including substations
|
|
176,873
|
|
|
67,637
|
|
|
638
|
|
|
Various
|
|
|||
Gas Transportation:
|
|
|
|
|
|
|
|
|
|||||||
Rifle, Colo. to Avon, Colo.
|
|
21,532
|
|
|
7,579
|
|
|
—
|
|
|
60
|
|
|||
Gas Transportation Compressor
|
|
8,417
|
|
|
616
|
|
|
—
|
|
|
50
|
|
|||
Total
|
|
$
|
1,578,881
|
|
|
$
|
411,886
|
|
|
$
|
4,868
|
|
|
|
7.
|
Income Taxes
|
•
|
Corporate federal tax rate reduction from
35 percent
to
21 percent
;
|
•
|
Normalization of resulting plant-related excess deferred taxes;
|
•
|
Elimination of the corporate alternative minimum tax;
|
•
|
Continued interest expense deductibility and discontinued bonus depreciation for regulated public utilities;
|
•
|
Limitations on certain executive compensation deductions;
|
•
|
Limitations on certain deductions for NOLs arising after Dec. 31, 2017 (limited to
80 percent
of taxable income);
|
•
|
Repeal of the section 199 manufacturing deduction; and
|
•
|
Reduced deductions for meals and entertainment as well as state and local lobbying.
|
•
|
$1.1 billion
(
$1.5 billion
grossed-up for tax) of reclassifications of plant-related excess deferred taxes to regulatory liabilities upon valuation at the new
21 percent
federal rate. The regulatory liabilities will be amortized consistent with IRS normalization requirements, resulting in customer refunds over the average remaining life of the related property;
|
•
|
$54 million
and
$50 million
of reclassifications (grossed-up for tax) of excess deferred taxes for non-plant related deferred tax assets and liabilities, respectively, to regulatory assets and liabilities;
|
•
|
$18 million
of total estimated income tax benefit related to the federal tax reform implementation, and a
$4 million
reduction to net income related to the allocation of Xcel Energy Services Inc.’s tax rate change on its deferred taxes.
|
•
|
Immediate expensing, or “bonus depreciation,” of
50 percent
for property placed in service in 2015, 2016, and 2017;
|
•
|
PTCs at
100 percent
of the applicable rate for wind energy projects that begin construction by the end of 2016;
80 percent
of the credit rate for projects that begin construction in 2017;
60 percent
of the credit rate for projects that begin construction in 2018; and
40 percent
of the credit rate for projects that begin construction in 2019. The wind energy PTC was not extended for projects that begin construction after 2019;
|
•
|
ITCs at
30 percent
for commercial solar projects that begin construction by the end of 2019;
26 percent
for projects that begin construction in 2020;
22 percent
for projects that begin construction in 2021; and
10 percent
for projects thereafter;
|
•
|
R&E credit was permanently extended; and
|
•
|
Delay of
two
years (until 2020) of the excise tax on certain employer-provided health insurance plans.
|
Tax Year(s)
|
|
Expiration
|
2009 - 2011
|
|
June 2018
|
2012 - 2013
|
|
October 2018
|
2014
|
|
September 2018
|
2015
|
|
September 2019
|
2016
|
|
September 2020
|
(Millions of Dollars)
|
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
||||
Unrecognized tax benefit — Permanent tax positions
|
|
$
|
4.0
|
|
|
$
|
2.9
|
|
Unrecognized tax benefit — Temporary tax positions
|
|
6.1
|
|
|
16.8
|
|
||
Total unrecognized tax benefit
|
|
$
|
10.1
|
|
|
$
|
19.7
|
|
(Millions of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Balance at Jan. 1
|
|
$
|
19.7
|
|
|
$
|
17.4
|
|
|
$
|
11.9
|
|
Additions based on tax positions related to the current year
|
|
1.9
|
|
|
2.7
|
|
|
4.5
|
|
|||
Reductions based on tax positions related to the current year
|
|
(1.5
|
)
|
|
—
|
|
|
(1.5
|
)
|
|||
Additions for tax positions of prior years
|
|
4.4
|
|
|
0.5
|
|
|
2.5
|
|
|||
Reductions for tax positions of prior years
|
|
(14.4
|
)
|
|
(0.9
|
)
|
|
—
|
|
|||
Balance at Dec. 31
|
|
$
|
10.1
|
|
|
$
|
19.7
|
|
|
$
|
17.4
|
|
(Millions of Dollars)
|
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
||||
NOL and tax credit carryforwards
|
|
$
|
(4.0
|
)
|
|
$
|
(5.8
|
)
|
(Millions of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Payable for interest related to unrecognized tax benefits at Jan. 1
|
|
$
|
(1.1
|
)
|
|
$
|
(0.4
|
)
|
|
$
|
(0.2
|
)
|
Interest income (expense) related to unrecognized tax benefits
|
|
0.8
|
|
|
(0.7
|
)
|
|
(0.2
|
)
|
|||
Payable for interest related to unrecognized tax benefits at Dec. 31
|
|
$
|
(0.3
|
)
|
|
$
|
(1.1
|
)
|
|
$
|
(0.4
|
)
|
(Millions of Dollars)
|
|
2017
|
|
2016
|
||||
Federal NOL carryforward
|
|
$
|
68
|
|
|
$
|
260
|
|
Federal tax credit carryforwards
|
|
30
|
|
|
25
|
|
||
State NOL carryforwards
|
|
679
|
|
|
684
|
|
||
State tax credit carryforwards, net of federal detriment
(a)
|
|
17
|
|
|
13
|
|
||
Valuation allowances for state credit carryforwards, net of federal detriment
(b)
|
|
(7
|
)
|
|
(3
|
)
|
(a)
|
State tax credit carryforwards are net of federal detriment of
$4 million
and
$7 million
as of Dec. 31, 2017 and 2016, respectively.
|
(b)
|
Valuation allowances for state tax credit carryforwards were net of federal benefit of
$2 million
and
$2 million
as of Dec. 31, 2017 and 2016, respectively.
|
|
|
2017
|
|
2016
(b)
|
|
2015
(b)
|
|||
Federal statutory rate
|
|
35.0
|
%
|
|
35.0
|
%
|
|
35.0
|
%
|
State income tax on pretax income, net of federal tax effect
|
|
3.0
|
%
|
|
3.0
|
%
|
|
3.0
|
%
|
Increases (decreases) in tax from:
|
|
|
|
|
|
|
|
|
|
Tax reform
|
|
(2.4
|
)
|
|
—
|
|
|
—
|
|
Tax credits recognized, net of federal income tax expense
|
|
(0.9
|
)
|
|
(0.7
|
)
|
|
(0.7
|
)
|
Regulatory differences - effects of rate changes
(a)
|
|
(0.1
|
)
|
|
(0.1
|
)
|
|
(0.1
|
)
|
Regulatory differences - other utility plant items
|
|
(0.9
|
)
|
|
(0.5
|
)
|
|
(0.3
|
)
|
Change in unrecognized tax benefits
|
|
0.2
|
|
|
—
|
|
|
0.1
|
|
Other, net
|
|
(0.1
|
)
|
|
0.4
|
|
|
0.4
|
|
Effective income tax rate
|
|
33.8
|
%
|
|
37.1
|
%
|
|
37.4
|
%
|
(a)
|
The amortization of excess deferred taxes.
|
(b)
|
The prior periods included in this footnote have been reclassified to conform to current year presentation.
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Current federal tax expense (benefit)
|
|
$
|
40,386
|
|
|
$
|
45,287
|
|
|
$
|
(1,166
|
)
|
Current state tax expense (benefit)
|
|
14,577
|
|
|
8,754
|
|
|
(727
|
)
|
|||
Current change in unrecognized tax (benefit) expense
|
|
(7,798
|
)
|
|
680
|
|
|
5,244
|
|
|||
Deferred federal tax expense
|
|
176,410
|
|
|
195,064
|
|
|
246,096
|
|
|||
Deferred state tax expense
|
|
22,513
|
|
|
27,216
|
|
|
36,450
|
|
|||
Deferred change in unrecognized tax expense (benefit)
|
|
8,894
|
|
|
(278
|
)
|
|
(4,650
|
)
|
|||
Deferred investment tax credits
|
|
(2,803
|
)
|
|
(2,805
|
)
|
|
(2,807
|
)
|
|||
Total income tax expense
|
|
$
|
252,179
|
|
|
$
|
273,918
|
|
|
$
|
278,440
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Deferred tax (benefit) expense excluding items below
|
|
$
|
(1,244,653
|
)
|
|
$
|
230,931
|
|
|
$
|
285,144
|
|
Amortization and adjustments to deferred income taxes on income tax regulatory assets and liabilities
|
|
1,453,080
|
|
|
(8,418
|
)
|
|
(7,229
|
)
|
|||
Tax expense allocated to other comprehensive income, net of adoption of ASU No. 2018-02, and other
|
|
(610
|
)
|
|
(511
|
)
|
|
(19
|
)
|
|||
Deferred tax expense
|
|
$
|
207,817
|
|
|
$
|
222,002
|
|
|
$
|
277,896
|
|
(a)
|
The prior period included in this footnote has been reclassified to conform to current year presentation.
|
8.
|
Benefit Plans and Other Postretirement Benefits
|
•
|
Investment returns in
2017
were above the assumed level of
6.84 percent
;
|
•
|
Investment returns in
2016
were below the assumed level of
6.84 percent
;
|
•
|
Investment returns in
2015
were below the assumed level of
6.81 percent
; and
|
•
|
In
2018
, PSCo’s expected investment-return assumption is
6.84 percent
.
|
|
|
2017
|
|
2016
|
||
Domestic and international equity securities
|
|
34
|
%
|
|
36
|
%
|
Long-duration fixed income and interest rate swap securities
|
|
32
|
|
|
31
|
|
Short-to-intermediate fixed income securities
|
|
18
|
|
|
15
|
|
Alternative investments
|
|
14
|
|
|
16
|
|
Cash
|
|
2
|
|
|
2
|
|
Total
|
|
100
|
%
|
|
100
|
%
|
|
|
Dec. 31, 2017
|
||||||||||||||||||
(Thousands of Dollars)
|
|
Level 1
|
|
Level 2
|
|
Level 3
|
|
Investments Measured at NAV
|
|
Total
|
||||||||||
Cash equivalents
|
|
$
|
67,179
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
67,179
|
|
Commingled funds:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
U.S. equity funds
|
|
169,624
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
169,624
|
|
|||||
Non U.S. equity funds
|
|
30,277
|
|
|
—
|
|
|
—
|
|
|
65,822
|
|
|
96,099
|
|
|||||
U.S. corporate bond funds
|
|
137,086
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
137,086
|
|
|||||
Emerging market equity funds
|
|
—
|
|
|
—
|
|
|
—
|
|
|
103,876
|
|
|
103,876
|
|
|||||
Emerging market debt funds
|
|
24,825
|
|
|
—
|
|
|
—
|
|
|
54,954
|
|
|
79,779
|
|
|||||
Private equity investments
|
|
—
|
|
|
—
|
|
|
—
|
|
|
27,816
|
|
|
27,816
|
|
|||||
Real estate
|
|
—
|
|
|
—
|
|
|
—
|
|
|
64,500
|
|
|
64,500
|
|
|||||
Other commingled funds
|
|
1,601
|
|
|
—
|
|
|
—
|
|
|
38,545
|
|
|
40,146
|
|
|||||
Debt securities:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Government securities
|
|
—
|
|
|
144,333
|
|
|
—
|
|
|
—
|
|
|
144,333
|
|
|||||
U.S. corporate bonds
|
|
—
|
|
|
102,659
|
|
|
—
|
|
|
—
|
|
|
102,659
|
|
|||||
Non U.S. corporate bonds
|
|
—
|
|
|
16,792
|
|
|
—
|
|
|
—
|
|
|
16,792
|
|
|||||
Equity securities:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
U.S. equities
|
|
37,752
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
37,752
|
|
|||||
Other
|
|
(9,885
|
)
|
|
1,414
|
|
|
—
|
|
|
180
|
|
|
(8,291
|
)
|
|||||
Total
|
|
$
|
458,459
|
|
|
$
|
265,198
|
|
|
$
|
—
|
|
|
$
|
355,693
|
|
|
$
|
1,079,350
|
|
|
|
Dec. 31, 2016
|
||||||||||||||||||
(Thousands of Dollars)
|
|
Level 1
|
|
Level 2
|
|
Level 3
|
|
Investments Measured at NAV
|
|
Total
|
||||||||||
Cash equivalents
|
|
$
|
34,957
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
34,957
|
|
Commingled funds:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
U.S. equity funds
|
|
165,621
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
165,621
|
|
|||||
Non U.S. equity funds
|
|
64,710
|
|
|
—
|
|
|
—
|
|
|
57,487
|
|
|
122,197
|
|
|||||
U.S. corporate bond funds
|
|
96,995
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
96,995
|
|
|||||
Emerging market equity funds
|
|
—
|
|
|
—
|
|
|
—
|
|
|
64,784
|
|
|
64,784
|
|
|||||
Emerging market debt funds
|
|
25,866
|
|
|
—
|
|
|
—
|
|
|
27,837
|
|
|
53,703
|
|
|||||
Commodity funds
|
|
—
|
|
|
—
|
|
|
—
|
|
|
7,497
|
|
|
7,497
|
|
|||||
Private equity investments
|
|
—
|
|
|
—
|
|
|
—
|
|
|
31,828
|
|
|
31,828
|
|
|||||
Real estate
|
|
—
|
|
|
—
|
|
|
—
|
|
|
61,048
|
|
|
61,048
|
|
|||||
Other commingled funds
|
|
—
|
|
|
—
|
|
|
—
|
|
|
74,696
|
|
|
74,696
|
|
|||||
Debt securities:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Government securities
|
|
—
|
|
|
168,014
|
|
|
—
|
|
|
—
|
|
|
168,014
|
|
|||||
U.S. corporate bonds
|
|
—
|
|
|
86,081
|
|
|
—
|
|
|
—
|
|
|
86,081
|
|
|||||
Non U.S. corporate bonds
|
|
—
|
|
|
13,828
|
|
|
—
|
|
|
—
|
|
|
13,828
|
|
|||||
Mortgage-backed securities
|
|
—
|
|
|
2,179
|
|
|
—
|
|
|
—
|
|
|
2,179
|
|
|||||
Asset-backed securities
|
|
—
|
|
|
1,032
|
|
|
—
|
|
|
—
|
|
|
1,032
|
|
|||||
Equity securities:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
U.S. equities
|
|
27,348
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
27,348
|
|
|||||
Other
|
|
—
|
|
|
(7,595
|
)
|
|
—
|
|
|
—
|
|
|
(7,595
|
)
|
|||||
Total
|
|
$
|
415,497
|
|
|
$
|
263,539
|
|
|
$
|
—
|
|
|
$
|
325,177
|
|
|
$
|
1,004,213
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Accumulated Benefit Obligation at Dec. 31
|
|
$
|
1,285,010
|
|
|
$
|
1,213,890
|
|
|
|
|
|
|
||||
Change in Projected Benefit Obligation:
|
|
|
|
|
||||
Obligation at Jan. 1
|
|
$
|
1,251,822
|
|
|
$
|
1,224,650
|
|
Service cost
|
|
27,280
|
|
|
25,926
|
|
||
Interest cost
|
|
50,558
|
|
|
55,405
|
|
||
Transfer to other plan
|
|
—
|
|
|
(9,149
|
)
|
||
Plan amendments
|
|
(1,096
|
)
|
|
206
|
|
||
Actuarial loss
|
|
83,531
|
|
|
51,779
|
|
||
Benefit payments
|
|
(77,915
|
)
|
|
(96,995
|
)
|
||
Obligation at Dec. 31
|
|
$
|
1,334,180
|
|
|
$
|
1,251,822
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Change in Fair Value of Plan Assets:
|
|
|
|
|
||||
Fair value of plan assets at Jan. 1
|
|
$
|
1,004,213
|
|
|
$
|
1,036,681
|
|
Actual return on plan assets
|
|
135,552
|
|
|
56,762
|
|
||
Employer contributions
|
|
17,500
|
|
|
16,829
|
|
||
Transfer to other plan
|
|
—
|
|
|
(9,064
|
)
|
||
Benefit payments
|
|
(77,915
|
)
|
|
(96,995
|
)
|
||
Fair value of plan assets at Dec. 31
|
|
$
|
1,079,350
|
|
|
$
|
1,004,213
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Funded Status of Plans at Dec. 31:
|
|
|
|
|
||||
Funded status
(a)
|
|
$
|
(254,830
|
)
|
|
$
|
(247,609
|
)
|
(a)
|
Amounts are recognized in noncurrent liabilities on PSCo’s consolidated balance sheets.
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Amounts Not Yet Recognized as Components of Net Periodic Benefit Cost:
|
|
|
|
|
||||
Net loss
|
|
$
|
543,707
|
|
|
$
|
554,999
|
|
Prior service credit
|
|
(10,593
|
)
|
|
(12,155
|
)
|
||
Total
|
|
$
|
533,114
|
|
|
$
|
542,844
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Amounts Not Yet Recognized as Components of Net Periodic Benefit Cost Have Been Recorded as Follows Based Upon Expected Recovery in Rates:
|
|
|
|
|
||||
Current regulatory assets
|
|
$
|
27,662
|
|
|
$
|
26,853
|
|
Noncurrent regulatory assets
|
|
505,171
|
|
|
515,708
|
|
||
Deferred income taxes
|
|
69
|
|
|
108
|
|
||
Net-of-tax accumulated OCI
|
|
212
|
|
|
175
|
|
||
Total
|
|
$
|
533,114
|
|
|
$
|
542,844
|
|
Measurement date
|
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
|
|
2017
|
|
2016
|
||
Significant Assumptions Used to Measure Benefit Obligations:
|
|
|
|
|
||
Discount rate for year-end valuation
|
|
3.63
|
%
|
|
4.13
|
%
|
Expected average long-term increase in compensation level
|
|
3.75
|
|
|
3.75
|
|
Mortality table
|
|
RP-2014
|
|
|
RP-2014
|
|
•
|
$150 million
in January 2018, of which
$22 million
was attributable to PSCo;
|
•
|
$162 million
in 2017, of which
$18 million
was attributable to PSCo;
|
•
|
$125 million
in 2016, of which
$17 million
was attributable to PSCo; and
|
•
|
$90 million
in 2015, of which
$20 million
was attributable to PSCo.
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Service cost
|
|
$
|
27,280
|
|
|
$
|
25,926
|
|
|
$
|
28,260
|
|
Interest cost
|
|
50,558
|
|
|
55,405
|
|
|
50,857
|
|
|||
Expected return on plan assets
|
|
(68,535
|
)
|
|
(70,769
|
)
|
|
(72,590
|
)
|
|||
Amortization of prior service credit
|
|
(3,211
|
)
|
|
(3,211
|
)
|
|
(3,136
|
)
|
|||
Amortization of net loss
|
|
28,355
|
|
|
26,771
|
|
|
36,377
|
|
|||
Net periodic pension cost
|
|
34,447
|
|
|
34,122
|
|
|
39,768
|
|
|||
(Costs) credits not recognized due to effects of regulation
|
|
(2,631
|
)
|
|
3,364
|
|
|
(1,464
|
)
|
|||
Net benefit cost recognized for financial reporting
|
|
$
|
31,816
|
|
|
$
|
37,486
|
|
|
$
|
38,304
|
|
|
|
2017
|
|
2016
|
|
2015
|
|||
Significant Assumptions Used to Measure Costs:
|
|
|
|
|
|
|
|||
Discount rate
|
|
4.13
|
%
|
|
4.66
|
%
|
|
4.11
|
%
|
Expected average long-term increase in compensation level
|
|
3.75
|
|
|
4.00
|
|
|
3.75
|
|
Expected average long-term rate of return on assets
|
|
6.84
|
|
|
6.84
|
|
|
6.81
|
|
|
|
2017
|
|
2016
|
||
Domestic and international equity securities
|
|
24
|
%
|
|
25
|
%
|
Short-to-intermediate fixed income securities
|
|
60
|
|
|
57
|
|
Alternative investments
|
|
9
|
|
|
13
|
|
Cash
|
|
7
|
|
|
5
|
|
Total
|
|
100
|
%
|
|
100
|
%
|
|
|
Dec. 31, 2017
|
||||||||||||||||||
(Thousands of Dollars)
|
|
Level 1
|
|
Level 2
|
|
Level 3
|
|
Investments Measured at NAV
|
|
Total
|
||||||||||
Cash equivalents
|
|
$
|
25,724
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
25,724
|
|
Insurance contracts
|
|
—
|
|
|
43,524
|
|
|
—
|
|
|
—
|
|
|
43,524
|
|
|||||
Commingled funds:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
U.S. equity funds
|
|
64,899
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
64,899
|
|
|||||
U.S fixed income funds
|
|
29,946
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
29,946
|
|
|||||
Emerging market debt funds
|
|
35,402
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
35,402
|
|
|||||
Debt securities:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Government securities
|
|
—
|
|
|
50,576
|
|
|
—
|
|
|
—
|
|
|
50,576
|
|
|||||
U.S. corporate bonds
|
|
—
|
|
|
55,323
|
|
|
—
|
|
|
—
|
|
|
55,323
|
|
|||||
Non U.S. corporate bonds
|
|
—
|
|
|
18,712
|
|
|
—
|
|
|
—
|
|
|
18,712
|
|
|||||
Asset-backed securities
|
|
—
|
|
|
20,468
|
|
|
—
|
|
|
—
|
|
|
20,468
|
|
|||||
Mortgage-backed securities
|
|
—
|
|
|
30,231
|
|
|
—
|
|
|
—
|
|
|
30,231
|
|
|||||
Equity securities:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Non U.S. equities
|
|
30,671
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
30,671
|
|
|||||
Other
|
|
—
|
|
|
948
|
|
|
—
|
|
|
—
|
|
|
948
|
|
|||||
Total
|
|
$
|
186,642
|
|
|
$
|
219,782
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
406,424
|
|
|
|
Dec. 31, 2016
|
||||||||||||||||||
(Thousands of Dollars)
|
|
Level 1
|
|
Level 2
|
|
Level 3
|
|
Investments Measured at NAV
|
|
Total
|
||||||||||
Cash equivalents
|
|
$
|
18,288
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
18,288
|
|
Insurance contracts
|
|
—
|
|
|
42,046
|
|
|
—
|
|
|
—
|
|
|
42,046
|
|
|||||
Commingled funds:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
U.S. equity funds
|
|
48,462
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
48,462
|
|
|||||
U.S fixed income funds
|
|
24,132
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
24,132
|
|
|||||
Emerging market debt funds
|
|
27,089
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
27,089
|
|
|||||
Other commingled funds
|
|
—
|
|
|
—
|
|
|
—
|
|
|
48,922
|
|
|
48,922
|
|
|||||
Debt securities:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Government securities
|
|
—
|
|
|
33,600
|
|
|
—
|
|
|
—
|
|
|
33,600
|
|
|||||
U.S. corporate bonds
|
|
—
|
|
|
55,473
|
|
|
—
|
|
|
—
|
|
|
55,473
|
|
|||||
Non U.S. corporate bonds
|
|
—
|
|
|
15,384
|
|
|
—
|
|
|
—
|
|
|
15,384
|
|
|||||
Asset-backed securities
|
|
—
|
|
|
16,845
|
|
|
—
|
|
|
—
|
|
|
16,845
|
|
|||||
Mortgage-backed securities
|
|
—
|
|
|
25,563
|
|
|
—
|
|
|
—
|
|
|
25,563
|
|
|||||
Equity securities:
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Non U.S. equities
|
|
36,462
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
36,462
|
|
|||||
Other
|
|
—
|
|
|
1,289
|
|
|
—
|
|
|
—
|
|
|
1,289
|
|
|||||
Total
|
|
$
|
154,433
|
|
|
$
|
190,200
|
|
|
$
|
—
|
|
|
$
|
48,922
|
|
|
$
|
393,555
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Change in Fair Value of Plan Assets:
|
|
|
|
|
||||
Fair value of plan assets at Jan. 1
|
|
$
|
393,555
|
|
|
$
|
399,442
|
|
Actual return on plan assets
|
|
36,975
|
|
|
18,590
|
|
||
Plan participants’ contributions
|
|
5,971
|
|
|
5,376
|
|
||
Employer contributions
|
|
5,309
|
|
|
5,368
|
|
||
Benefit payments
|
|
(35,386
|
)
|
|
(35,221
|
)
|
||
Fair value of plan assets at Dec. 31
|
|
$
|
406,424
|
|
|
$
|
393,555
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Funded Status at Dec. 31:
|
|
|
|
|
||||
Funded status
(a)
|
|
$
|
(22,823
|
)
|
|
$
|
(28,268
|
)
|
(a)
|
Amounts are recognized in noncurrent liabilities on PSCo’s consolidated balance sheets as of Dec. 31, 2017 and 2016, respectively.
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Amounts Not Yet Recognized as Components of Net Periodic Benefit Cost:
|
|
|
|
|
||||
Net loss
|
|
$
|
77,760
|
|
|
$
|
78,359
|
|
Prior service credit
|
|
(21,448
|
)
|
|
(27,695
|
)
|
||
Total
|
|
$
|
56,312
|
|
|
$
|
50,664
|
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
||||
Amounts Not Yet Recognized as Components of Net Periodic Benefit Cost Have Been Recorded as Follows Based Upon Expected Recovery in Rates:
|
|
|
|
|
||||
Noncurrent regulatory assets
|
|
$
|
56,312
|
|
|
$
|
50,664
|
|
Measurement date
|
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
|
|
2017
|
|
2016
|
||
Significant Assumptions Used to Measure Benefit Obligations:
|
|
|
|
|
||
Discount rate for year-end valuation
|
|
3.62
|
%
|
|
4.13
|
%
|
Mortality table
|
|
RP 2014
|
|
|
RP 2014
|
|
Health care costs trend rate — initial: Pre-65
|
|
7.00
|
%
|
|
5.50
|
%
|
Health care costs trend rate — initial: Post-65
|
|
5.50
|
%
|
|
5.50
|
%
|
|
|
One-Percentage Point
|
||||||
(Thousands of Dollars)
|
|
Increase
|
|
Decrease
|
||||
APBO
|
|
$
|
41,665
|
|
|
$
|
(35,254
|
)
|
Service and interest components
|
|
1,837
|
|
|
(1,555
|
)
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Service cost
|
|
$
|
767
|
|
|
$
|
768
|
|
|
$
|
928
|
|
Interest cost
|
|
16,765
|
|
|
18,070
|
|
|
17,498
|
|
|||
Expected return on plan assets
|
|
(21,905
|
)
|
|
(22,299
|
)
|
|
(23,803
|
)
|
|||
Amortization of prior service credit
|
|
(6,247
|
)
|
|
(6,247
|
)
|
|
(6,247
|
)
|
|||
Amortization of net loss
|
|
3,843
|
|
|
1,931
|
|
|
2,475
|
|
|||
Net periodic postretirement benefit credit
|
|
$
|
(6,777
|
)
|
|
$
|
(7,777
|
)
|
|
$
|
(9,149
|
)
|
|
|
2017
|
|
2016
|
|
2015
|
|||
Significant Assumptions Used to Measure Costs:
|
|
|
|
|
|
|
|||
Discount rate
|
|
4.13
|
%
|
|
4.65
|
%
|
|
4.08
|
%
|
Expected average long-term rate of return on assets
|
|
5.80
|
|
|
5.80
|
|
|
5.80
|
|
(Thousands of Dollars)
|
|
Projected Pension
Benefit Payments |
|
Gross Projected
Postretirement Health Care Benefit Payments |
|
Expected Medicare
Part D Subsidies |
|
Net Projected
Postretirement Health Care Benefit Payments |
||||||||
2018
|
|
$
|
83,036
|
|
|
$
|
32,186
|
|
|
$
|
2,074
|
|
|
$
|
30,112
|
|
2019
|
|
81,698
|
|
|
32,454
|
|
|
2,192
|
|
|
30,262
|
|
||||
2020
|
|
81,413
|
|
|
32,767
|
|
|
2,296
|
|
|
30,471
|
|
||||
2021
|
|
82,021
|
|
|
32,737
|
|
|
2,404
|
|
|
30,333
|
|
||||
2022
|
|
83,261
|
|
|
32,998
|
|
|
2,501
|
|
|
30,497
|
|
||||
2023-2027
|
|
411,798
|
|
|
152,926
|
|
|
13,789
|
|
|
139,137
|
|
9.
|
Other Income, Net
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Interest income
|
|
$
|
3,809
|
|
|
$
|
1,860
|
|
|
$
|
753
|
|
Other nonoperating income
|
|
6,383
|
|
|
2,241
|
|
|
2,408
|
|
|||
Insurance policy expense
|
|
(340
|
)
|
|
(281
|
)
|
|
(197
|
)
|
|||
Other nonoperating expense
|
|
—
|
|
|
(3
|
)
|
|
—
|
|
|||
Other income, net
|
|
$
|
9,852
|
|
|
$
|
3,817
|
|
|
$
|
2,964
|
|
10.
|
Fair Value of Financial Assets and Liabilities
|
(Amounts in Thousands)
(a)(b)
|
|
2017
|
|
2016
|
||
MWh of electricity
|
|
22,260
|
|
|
6,283
|
|
MMBtu of natural gas
|
|
13,410
|
|
|
42,203
|
|
(a)
|
Amounts are not reflective of net positions in the underlying commodities.
|
(b)
|
Notional amounts for options are included on a gross basis, but are weighted for the probability of exercise.
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Accumulated other comprehensive loss related to cash flow hedges at Jan. 1
|
|
$
|
(22,780
|
)
|
|
$
|
(23,836
|
)
|
|
$
|
(23,878
|
)
|
After-tax net unrealized losses related to derivatives accounted for as hedges
|
|
—
|
|
|
—
|
|
|
(30
|
)
|
|||
After-tax net realized losses on derivative transactions reclassified into earnings
|
|
1,005
|
|
|
1,056
|
|
|
72
|
|
|||
Accumulated other comprehensive loss related to cash flow hedges at Dec. 31
|
|
$
|
(21,775
|
)
|
|
$
|
(22,780
|
)
|
|
$
|
(23,836
|
)
|
|
|
Year Ended Dec. 31, 2017
|
|
||||||||||||||||||
|
|
Pre-Tax Fair Value
Losses Recognized During the Period in: |
|
Pre-Tax Losses
Reclassified into Income During the Period from: |
|
|
|
||||||||||||||
(Thousands of Dollars)
|
|
Accumulated
Other Comprehensive
Loss
|
|
Regulatory
(Assets) and
Liabilities
|
|
Accumulated
Other Comprehensive
Loss
|
|
Regulatory
Assets and
(Liabilities)
|
|
Pre-Tax Gains (Losses) Recognized
During the Period in Income |
|
||||||||||
Derivatives designated as cash flow hedges
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Interest rate
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
1,615
|
|
(a)
|
$
|
—
|
|
|
$
|
—
|
|
|
Total
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
1,615
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
Other derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Commodity trading
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
386
|
|
(c)
|
Natural gas commodity
|
|
—
|
|
|
(10,921
|
)
|
|
—
|
|
|
1,933
|
|
(d)
|
(4,170
|
)
|
(d)
|
|||||
Total
|
|
$
|
—
|
|
|
$
|
(10,921
|
)
|
|
$
|
—
|
|
|
$
|
1,933
|
|
|
$
|
(3,784
|
)
|
|
|
|
Year Ended Dec. 31, 2016
|
|
||||||||||||||||||
|
|
Pre-Tax Fair Value
Gains Recognized During the Period in: |
|
Pre-Tax Losses
Reclassified into Income During the Period from: |
|
|
|
||||||||||||||
(Thousands of Dollars)
|
|
Accumulated
Other
Comprehensive
Loss
|
|
Regulatory
(Assets) and
Liabilities
|
|
Accumulated
Other
Comprehensive
Loss
|
|
Regulatory
Assets and
(Liabilities)
|
|
Pre-Tax Losses
Recognized During the Period in Income |
|
||||||||||
Derivatives designated as cash flow hedges
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Interest rate
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
1,618
|
|
(a)
|
$
|
—
|
|
|
$
|
—
|
|
|
Vehicle fuel and other commodity
|
|
—
|
|
|
—
|
|
|
86
|
|
(b)
|
—
|
|
|
—
|
|
|
|||||
Total
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
1,704
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
Other derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Commodity trading
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
(257
|
)
|
(c)
|
Natural gas commodity
|
|
—
|
|
|
2,051
|
|
|
—
|
|
|
10,292
|
|
(d)
|
(5,832
|
)
|
(d)
|
|||||
Total
|
|
$
|
—
|
|
|
$
|
2,051
|
|
|
$
|
—
|
|
|
$
|
10,292
|
|
|
$
|
(6,089
|
)
|
|
|
|
Year Ended Dec. 31, 2015
|
|
||||||||||||||||||
|
|
Pre-Tax Fair Value
Losses Recognized During the Period in: |
|
Pre-Tax Losses
Reclassified into Income During the Period from: |
|
|
|
||||||||||||||
(Thousands of Dollars)
|
|
Accumulated
Other Comprehensive
Loss
|
|
Regulatory
(Assets) and
Liabilities
|
|
Accumulated
Other Comprehensive
Loss
|
|
Regulatory
Assets and
(Liabilities)
|
|
Pre-Tax Gains (Losses) Recognized
During the Period in Income |
|
||||||||||
Derivatives designated as cash flow hedges
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Interest rate
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
54
|
|
(a)
|
$
|
—
|
|
|
$
|
—
|
|
|
Vehicle fuel and other commodity
|
|
(50
|
)
|
|
—
|
|
|
57
|
|
(b)
|
—
|
|
|
—
|
|
|
|||||
Total
|
|
$
|
(50
|
)
|
|
$
|
—
|
|
|
$
|
111
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
Other derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Commodity trading
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
364
|
|
(c)
|
Natural gas commodity
|
|
—
|
|
|
(10,635
|
)
|
|
—
|
|
|
10,158
|
|
(d)
|
(7,620
|
)
|
(d)
|
|||||
Total
|
|
$
|
—
|
|
|
$
|
(10,635
|
)
|
|
$
|
—
|
|
|
$
|
10,158
|
|
|
$
|
(7,256
|
)
|
|
(a)
|
Amounts are recorded to interest charges.
|
(b)
|
Amounts are recorded to O&M expenses.
|
(c)
|
Amounts are recorded to electric operating revenues. Portions of these gains and losses are subject to sharing with electric customers through margin-sharing mechanisms and deducted from gross revenue, as appropriate.
|
(d)
|
Certain derivatives are utilized to mitigate natural gas price risk for electric generation and are recorded to electric fuel and purchased power, subject to cost-recovery mechanisms and reclassified to a regulatory asset as appropriate. Amounts for the year ended Dec. 31, 2017 included
$0.4 million
of settlement gains and amounts for the years ended Dec. 31, 2016 and 2015 included
$0.2 million
and
$1.1 million
, respectively, of settlement losses on derivatives entered to mitigate natural gas price risk for electric generation, recorded to electric fuel and purchased power, subject to cost-recovery mechanisms and reclassified to a regulatory asset, as appropriate. The remaining settlement losses for the years ended Dec. 31, 2017, 2016 and 2015 relate to natural gas operations and are recorded to cost of natural gas sold and transported. These losses are subject to cost-recovery mechanisms and reclassified out of income to a regulatory asset, as appropriate.
|
|
|
Dec. 31, 2017
|
||||||||||||||||||||||
|
|
Fair Value
|
|
|
|
|
|
|
||||||||||||||||
(Thousands of Dollars)
|
|
Level 1
|
|
Level 2
|
|
Level 3
|
|
Fair Value
Total
|
|
Counterparty
Netting
(b)
|
|
Total
|
||||||||||||
Current derivative assets
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Other derivative instruments:
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Commodity trading
|
|
$
|
528
|
|
|
$
|
4,488
|
|
|
$
|
12
|
|
|
$
|
5,028
|
|
|
$
|
(3,554
|
)
|
|
$
|
1,474
|
|
Natural gas commodity
|
|
—
|
|
|
18
|
|
|
—
|
|
|
18
|
|
|
(10
|
)
|
|
8
|
|
||||||
Total current derivative assets
|
|
$
|
528
|
|
|
$
|
4,506
|
|
|
$
|
12
|
|
|
$
|
5,046
|
|
|
$
|
(3,564
|
)
|
|
1,482
|
|
|
PPAs
(a)
|
|
|
|
|
|
|
|
|
|
|
|
1,715
|
|
|||||||||||
Current derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
$
|
3,197
|
|
||||||||||
Noncurrent derivative assets
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Other derivative instruments:
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Commodity trading
|
|
$
|
—
|
|
|
$
|
1,541
|
|
|
$
|
—
|
|
|
$
|
1,541
|
|
|
$
|
(563
|
)
|
|
$
|
978
|
|
Total noncurrent derivative assets
|
|
$
|
—
|
|
|
$
|
1,541
|
|
|
$
|
—
|
|
|
$
|
1,541
|
|
|
$
|
(563
|
)
|
|
978
|
|
|
PPAs
(a)
|
|
|
|
|
|
|
|
|
|
|
|
31
|
|
|||||||||||
Noncurrent derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
$
|
1,009
|
|
||||||||||
Current derivative liabilities
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Other derivative instruments:
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Commodity trading
|
|
$
|
446
|
|
|
$
|
4,285
|
|
|
$
|
6
|
|
|
$
|
4,737
|
|
|
$
|
(3,431
|
)
|
|
$
|
1,306
|
|
Natural gas commodity
|
|
—
|
|
|
1,016
|
|
|
—
|
|
|
1,016
|
|
|
(10
|
)
|
|
1,006
|
|
||||||
Total current derivative liabilities
|
|
$
|
446
|
|
|
$
|
5,301
|
|
|
$
|
6
|
|
|
$
|
5,753
|
|
|
$
|
(3,441
|
)
|
|
2,312
|
|
|
PPAs
(a)
|
|
|
|
|
|
|
|
|
|
|
|
5,036
|
|
|||||||||||
Current derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
$
|
7,348
|
|
||||||||||
Noncurrent derivative liabilities
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Other derivative instruments:
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Commodity trading
|
|
$
|
—
|
|
|
$
|
1,362
|
|
|
$
|
—
|
|
|
$
|
1,362
|
|
|
$
|
(563
|
)
|
|
$
|
799
|
|
Total noncurrent derivative liabilities
|
|
$
|
—
|
|
|
$
|
1,362
|
|
|
$
|
—
|
|
|
$
|
1,362
|
|
|
$
|
(563
|
)
|
|
799
|
|
|
PPAs
(a)
|
|
|
|
|
|
|
|
|
|
|
|
$
|
2,669
|
|
||||||||||
Noncurrent derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
$
|
3,468
|
|
(a)
|
During 2006, PSCo qualified these contracts under the normal purchase exception. Based on
this qualification, the contracts are no longer adjusted to fair value and the previous carrying value of these contracts will be amortized over the remaining contract lives along with the offsetting regulatory assets and liabilities.
|
(b)
|
PSCo nets derivative instruments and related collateral in its consolidated balance sheet when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements at Dec. 31, 2017. At Dec. 31, 2017, derivative assets and liabilities include
no
obligations to return or reclaim cash collateral. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.
|
|
|
Dec. 31, 2016
|
||||||||||||||||||||||
|
|
Fair Value
|
|
|
|
|
|
|
||||||||||||||||
(Thousands of Dollars)
|
|
Level 1
|
|
Level 2
|
|
Level 3
|
|
Fair Value
Total
|
|
Counterparty
Netting
(b)
|
|
Total
|
||||||||||||
Current derivative assets
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Other derivative instruments:
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Commodity trading
|
|
$
|
1,124
|
|
|
$
|
5,453
|
|
|
$
|
—
|
|
|
$
|
6,577
|
|
|
$
|
(5,137
|
)
|
|
$
|
1,440
|
|
Natural gas commodity
|
|
—
|
|
|
7,778
|
|
|
—
|
|
|
7,778
|
|
|
—
|
|
|
7,778
|
|
||||||
Total current derivative assets
|
|
$
|
1,124
|
|
|
$
|
13,231
|
|
|
$
|
—
|
|
|
$
|
14,355
|
|
|
$
|
(5,137
|
)
|
|
9,218
|
|
|
PPAs
(a)
|
|
|
|
|
|
|
|
|
|
|
|
1,716
|
|
|||||||||||
Current derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
$
|
10,934
|
|
||||||||||
Noncurrent derivative assets
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Other derivative instruments:
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Commodity trading
|
|
$
|
—
|
|
|
$
|
1,652
|
|
|
$
|
—
|
|
|
$
|
1,652
|
|
|
$
|
—
|
|
|
$
|
1,652
|
|
Total noncurrent derivative assets
|
|
$
|
—
|
|
|
$
|
1,652
|
|
|
$
|
—
|
|
|
$
|
1,652
|
|
|
$
|
—
|
|
|
1,652
|
|
|
PPAs
(a)
|
|
|
|
|
|
|
|
|
|
|
|
1,746
|
|
|||||||||||
Noncurrent derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
$
|
3,398
|
|
||||||||||
Current derivative liabilities
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Other derivative instruments:
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
Commodity trading
|
|
$
|
1,386
|
|
|
$
|
5,357
|
|
|
$
|
22
|
|
|
$
|
6,765
|
|
|
$
|
(5,137
|
)
|
|
$
|
1,628
|
|
Total current derivative liabilities
|
|
$
|
1,386
|
|
|
$
|
5,357
|
|
|
$
|
22
|
|
|
$
|
6,765
|
|
|
$
|
(5,137
|
)
|
|
1,628
|
|
|
PPAs
(a)
|
|
|
|
|
|
|
|
|
|
|
|
5,160
|
|
|||||||||||
Current derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
$
|
6,788
|
|
||||||||||
Noncurrent derivative liabilities
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
PPAs
(a)
|
|
|
|
|
|
|
|
|
|
|
|
$
|
7,828
|
|
||||||||||
Noncurrent derivative instruments
|
|
|
|
|
|
|
|
|
|
|
|
$
|
7,828
|
|
(a)
|
During 2006, PSCo qualified these contracts under the normal purchase exception. Based on this qualification, the contracts are no longer adjusted to fair value and the previous carrying value of these contracts will be amortized over the remaining contract lives along with the offsetting regulatory assets and liabilities.
|
(b)
|
PSCo nets derivative instruments and related collateral in its consolidated balance sheet when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements at Dec. 31, 2016. At Dec. 31, 2016, derivative assets and liabilities include
no
obligations to return cash collateral of or rights to reclaim cash collateral. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.
|
|
|
2017
|
|
2016
|
||||||||||||
(Thousands of Dollars)
|
|
Carrying
Amount
|
|
Fair Value
|
|
Carrying
Amount
|
|
Fair Value
|
||||||||
Long-term debt, including current portion
|
|
$
|
4,608,275
|
|
|
$
|
5,024,840
|
|
|
$
|
4,216,206
|
|
|
$
|
4,491,570
|
|
11.
|
Rate Matters
|
•
|
Colorado Statewide TCJA Proceeding
— On Jan. 31, 2018, the CPUC opened a statewide TCJA proceeding and ordered deferred accounting for all investor-owned utilities. On Feb. 21, 2017, PSCo filed a response with the CPUC related to the deferred accounting order and statewide TCJA proceeding, addressing the estimated impacts along with other considerations given PSCo’s pending natural gas and electric rate cases.
|
•
|
Colorado 2017 Multi-Year Natural Gas Rate Case
— On Feb. 14, 2018, the ALJ approved PSCo and CPUC Staff’s non-unanimous settlement agreement which addresses the impacts of the TCJA in 2018. This settlement agreement includes a
$20 million
reduction to provisional rates effective March 1, 2018, with future true-ups to be determined later in 2018 once a full analysis of the comprehensive impacts of tax reform is performed, including any outcomes associated with statewide proceeding. The final true-up would provide customers the full net benefit of the TCJA effective Jan. 1, 2018.
|
•
|
Colorado 2017 Multi-Year Electric Rate Case
— On Feb. 16, 2018, the CPUC denied the proposed settlement agreement between PSCo and several intervenors, in favor of the state TCJA proceeding. In the second quarter of 2018, PSCo plans to file a revised rate request that will include the impacts of the TCJA. Provisional rates, subject to refund with interest, are expected to be effective June 1, 2018. The appropriate test year and the final approved revenue requirement will be determined in the pending rate case, discussed below. PSCo expects to defer the TCJA net benefits for the first
five months
of 2018, prior to provisional rates.
|
Revenue Request (Millions of Dollars)
|
|
2018
|
|
2019
|
|
2020
|
|
2021
|
|
Total
|
||||||||||
Revenue request
|
|
$
|
74
|
|
|
$
|
75
|
|
|
$
|
60
|
|
|
$
|
36
|
|
|
$
|
245
|
|
CACJA revenue conversion to base rates
(a)
|
|
90
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
90
|
|
|||||
TCA revenue conversion to base rates
(a)
|
|
43
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
43
|
|
|||||
Total
(b)
|
|
$
|
207
|
|
|
$
|
75
|
|
|
$
|
60
|
|
|
$
|
36
|
|
|
$
|
378
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Expected year-end rate base (billions of dollars)
(b)
|
|
$
|
6.8
|
|
|
$
|
7.1
|
|
|
$
|
7.3
|
|
|
$
|
7.4
|
|
|
|
(a)
|
The roll-in of the TCA and CACJA rider revenues into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through a rider. Transmission investments for 2019-2021 will be recovered through the TCA rider.
|
(b)
|
This base rate request does not include the impacts of the RESA and ECA for the Rush Creek wind investments or the proposed CEP.
|
•
|
Supplemental direct testimony — April 16, 2018;
|
•
|
Answer testimony — May 31, 2018;
|
•
|
Rebuttal and cross-answer testimony — July 10, 2018;
|
•
|
Hearings — Aug. 21 - 31, 2018; and
|
•
|
Statement of position — Sept. 28, 2018.
|
Revenue Request (Millions of Dollars)
|
|
2018
|
|
2019
|
|
2020
|
|
Total
|
||||||||
Revenue request
|
|
$
|
63
|
|
|
$
|
33
|
|
|
$
|
43
|
|
|
$
|
139
|
|
PSIA revenue conversion to base rates
(a)
|
|
—
|
|
|
94
|
|
|
—
|
|
|
94
|
|
||||
Total
|
|
$
|
63
|
|
|
$
|
127
|
|
|
$
|
43
|
|
|
$
|
233
|
|
|
|
|
|
|
|
|
|
|
||||||||
Expected year-end rate base (billions of dollars)
(b)
|
|
$
|
1.5
|
|
|
$
|
2.3
|
|
|
$
|
2.4
|
|
|
|
(a)
|
The roll-in of PSIA rider revenue into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through the rider. The recovery of incremental PSIA related investments in 2019 and 2020 are included in the base rate request.
|
(b)
|
The additional rate base in 2019 predominantly reflects the roll-in of capital associated with the PSIA rider.
|
12.
|
Commitments and Contingencies
|
(Millions of Dollars)
|
|
Coal
|
|
Natural gas supply
|
|
Natural gas
storage and transportation |
||||||
2018
|
|
$
|
160
|
|
|
$
|
344
|
|
|
$
|
114
|
|
2019
|
|
97
|
|
|
286
|
|
|
112
|
|
|||
2020
|
|
69
|
|
|
275
|
|
|
111
|
|
|||
2021
|
|
37
|
|
|
278
|
|
|
109
|
|
|||
2022
|
|
38
|
|
|
126
|
|
|
109
|
|
|||
Thereafter
|
|
184
|
|
|
57
|
|
|
605
|
|
|||
Total
|
|
$
|
585
|
|
|
$
|
1,366
|
|
|
$
|
1,160
|
|
(Millions of Dollars)
|
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
||||
Gas storage facilities
|
|
$
|
200.5
|
|
|
$
|
200.5
|
|
Gas pipeline
|
|
20.7
|
|
|
20.7
|
|
||
Property held under capital leases
|
|
221.2
|
|
|
221.2
|
|
||
Accumulated depreciation
|
|
(70.6
|
)
|
|
(65.3
|
)
|
||
Total property held under capital leases, net
|
|
$
|
150.6
|
|
|
$
|
155.9
|
|
(Millions of Dollars)
|
|
Operating
Leases
|
|
PPA
(a) (b)
Operating
Leases
|
|
Total
Operating
Leases
|
|
Capital
Leases
|
||||||||
2018
|
|
$
|
10
|
|
|
$
|
96
|
|
|
$
|
106
|
|
|
$
|
25
|
|
2019
|
|
10
|
|
|
97
|
|
|
107
|
|
|
25
|
|
||||
2020
|
|
10
|
|
|
98
|
|
|
108
|
|
|
25
|
|
||||
2021
|
|
9
|
|
|
99
|
|
|
108
|
|
|
24
|
|
||||
2022
|
|
8
|
|
|
87
|
|
|
95
|
|
|
21
|
|
||||
Thereafter
|
|
34
|
|
|
394
|
|
|
428
|
|
|
442
|
|
||||
Total minimum obligation
|
|
|
|
|
|
|
|
562
|
|
|||||||
Interest component of obligation
|
|
|
|
|
|
|
|
(411
|
)
|
|||||||
Present value of minimum obligation
|
|
|
|
|
|
|
|
$
|
151
|
|
(a)
|
Amounts do not include PPAs accounted for as executory contracts.
|
(b)
|
PPA operating leases contractually expire through
2034
.
|
(Thousands of Dollars)
|
|
Beginning Balance
Jan. 1, 2017
|
|
Liabilities
Settled (a) |
|
Accretion
|
|
Cash Flow
Revisions
(b)
|
|
Ending Balance
Dec. 31, 2017
(c)
|
||||||||||
Electric plant
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Steam and other production ash containment
|
|
$
|
72,600
|
|
|
$
|
(12,068
|
)
|
|
$
|
3,159
|
|
|
$
|
9,573
|
|
|
$
|
73,264
|
|
Steam, hydro, and other production asbestos
|
|
40,450
|
|
|
(12,047
|
)
|
|
1,917
|
|
|
(458
|
)
|
|
29,862
|
|
|||||
Electric distribution
|
|
7,669
|
|
|
—
|
|
|
274
|
|
|
—
|
|
|
7,943
|
|
|||||
Wind production
|
|
2,072
|
|
|
—
|
|
|
20
|
|
|
—
|
|
|
2,092
|
|
|||||
Other
|
|
1,520
|
|
|
(204
|
)
|
|
66
|
|
|
—
|
|
|
1,382
|
|
|||||
Natural gas plant
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Gas transmission and distribution
|
|
160,719
|
|
|
—
|
|
|
6,649
|
|
|
61,503
|
|
|
228,871
|
|
|||||
Other
|
|
4,080
|
|
|
(354
|
)
|
|
159
|
|
|
—
|
|
|
3,885
|
|
|||||
Common and other property
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Common miscellaneous
|
|
453
|
|
|
—
|
|
|
17
|
|
|
—
|
|
|
470
|
|
|||||
Total liability
|
|
$
|
289,563
|
|
|
$
|
(24,673
|
)
|
|
$
|
12,261
|
|
|
$
|
70,618
|
|
|
$
|
347,769
|
|
(a)
|
The liabilities settled relate to asbestos abatement projects, the closure of certain ash containment facilities, and removal and proper disposal of storage tanks and other above ground equipment.
|
(b)
|
In 2017, AROs were revised for changes in estimated cash flows and the timing of those cash flows. Changes in the gas transmission and distribution AROs were mainly related to increased labor costs.
|
(c)
|
There were
no
ARO liabilities recognized during the year ended Dec. 31, 2017.
|
(Thousands of Dollars)
|
|
Beginning
Balance
Jan. 1, 2016
|
|
Liabilities
Recognized |
|
Accretion
|
|
Cash Flow
Revisions
(a)
|
|
Ending
Balance
Dec. 31, 2016
(b)
|
||||||||||
Electric plant
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Steam, hydro, and other production asbestos
|
|
$
|
38,676
|
|
|
$
|
—
|
|
|
$
|
1,877
|
|
|
$
|
(103
|
)
|
|
$
|
40,450
|
|
Steam and other production ash containment
|
|
70,767
|
|
|
—
|
|
|
3,078
|
|
|
(1,245
|
)
|
|
72,600
|
|
|||||
Wind production
|
|
1,992
|
|
|
—
|
|
|
19
|
|
|
61
|
|
|
2,072
|
|
|||||
Electric distribution
|
|
1,130
|
|
|
—
|
|
|
45
|
|
|
6,494
|
|
|
7,669
|
|
|||||
Other
|
|
1,054
|
|
|
214
|
|
|
46
|
|
|
206
|
|
|
1,520
|
|
|||||
Natural gas plant
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Gas transmission and distribution
|
|
122,168
|
|
|
—
|
|
|
5,009
|
|
|
33,542
|
|
|
160,719
|
|
|||||
Other
|
|
3,925
|
|
|
—
|
|
|
155
|
|
|
—
|
|
|
4,080
|
|
|||||
Common and other property
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Common miscellaneous
|
|
796
|
|
|
—
|
|
|
28
|
|
|
(371
|
)
|
|
453
|
|
|||||
Total liability
|
|
$
|
240,508
|
|
|
$
|
214
|
|
|
$
|
10,257
|
|
|
$
|
38,584
|
|
|
$
|
289,563
|
|
(a)
|
In 2016, AROs were revised for changes in estimated cash flows and the timing of those cash flows. Changes in the gas transmission and distribution AROs were mainly related to increased miles of gas mains.
|
(b)
|
There were
no
ARO liabilities settled during the year ended Dec. 31, 2016.
|
13.
|
Regulatory Assets and Liabilities
|
(Thousands of Dollars)
|
|
See Note(s)
|
|
Remaining
Amortization Period |
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
|||||||||||||
Regulatory Assets
|
|
|
|
|
|
Current
|
|
Noncurrent
|
|
Current
|
|
Noncurrent
|
|||||||||
Pension and retiree medical obligations
(a)
|
|
8
|
|
|
Various
|
|
$
|
28,010
|
|
|
$
|
565,241
|
|
|
$
|
27,270
|
|
|
$
|
568,258
|
|
Recoverable deferred taxes on AFUDC recorded in plant
(b)
|
|
1
|
|
|
Plant lives
|
|
—
|
|
|
86,966
|
|
|
—
|
|
|
151,022
|
|
||||
Net AROs
(c)
|
|
1, 12
|
|
|
Plant lives
|
|
—
|
|
|
80,476
|
|
|
—
|
|
|
78,050
|
|
||||
Depreciation differences
|
|
1
|
|
|
One to fourteen years
|
|
19,835
|
|
|
69,428
|
|
|
15,363
|
|
|
90,426
|
|
||||
Excess deferred taxes - TCJA
|
|
7
|
|
|
Various
|
|
—
|
|
|
53,937
|
|
|
—
|
|
|
—
|
|
||||
Purchased power contract costs
|
|
12
|
|
|
Term of related contract
|
|
1,261
|
|
|
28,009
|
|
|
1,035
|
|
|
29,029
|
|
||||
Property tax
|
|
|
|
Pending rate cases
|
|
—
|
|
|
16,047
|
|
|
9,393
|
|
|
1,653
|
|
|||||
Gas pipeline inspection costs
|
|
12
|
|
|
One to two years
|
|
1,791
|
|
|
7,743
|
|
|
—
|
|
|
4,405
|
|
||||
Conservation programs
(d)
|
|
1, 11
|
|
|
One to two years
|
|
6,942
|
|
|
5,528
|
|
|
9,262
|
|
|
6,986
|
|
||||
Losses on reacquired debt
|
|
4
|
|
|
Term of related debt
|
|
1,203
|
|
|
4,916
|
|
|
1,203
|
|
|
6,120
|
|
||||
Contract valuation adjustments
(e)
|
|
10
|
|
|
Term of related contract
|
|
6,022
|
|
|
2,638
|
|
|
3,444
|
|
|
6,082
|
|
||||
Other
|
|
|
|
Various
|
|
12,273
|
|
|
29,329
|
|
|
36,813
|
|
|
16,398
|
|
|||||
Total regulatory assets
|
|
|
|
|
|
$
|
77,337
|
|
|
$
|
950,258
|
|
|
$
|
103,783
|
|
|
$
|
958,429
|
|
(a)
|
Includes
$3.4 million
and
$4.2 million
of regulatory assets related to the nonqualified pension plan, of which
$0.3 million
and
$0.4 million
is included in the current asset at
Dec. 31, 2017
and 2016, respectively.
|
(b)
|
Includes a write-down of
$75.9 million
as a result of the revaluation of deferred tax gross up at the new federal tax rate at Dec. 31, 2017.
|
(c)
|
Includes amounts recorded for future recovery of AROs.
|
(d)
|
Includes costs for conservation programs, as well as incentives allowed in certain jurisdictions.
|
(e)
|
Includes the fair value of certain long-term PPAs used to meet energy capacity requirements and valuation adjustments on natural gas commodity purchases.
|
(Thousands of Dollars)
|
|
See Note(s)
|
|
Remaining
Amortization Period |
|
Dec. 31, 2017
|
|
Dec. 31, 2016
|
|||||||||||||
Regulatory Liabilities
|
|
|
|
|
|
Current
|
|
Noncurrent
|
|
Current
|
|
Noncurrent
|
|||||||||
Excess deferred taxes - TCJA
(a)
|
|
7
|
|
|
Various
|
|
$
|
—
|
|
|
$
|
1,445,079
|
|
|
$
|
—
|
|
|
$
|
—
|
|
Plant removal costs
|
|
1, 12
|
|
|
Plant lives
|
|
—
|
|
|
346,174
|
|
|
—
|
|
|
367,440
|
|
||||
Renewable resources and environmental initiatives
|
|
11, 12
|
|
|
Various
|
|
—
|
|
|
56,153
|
|
|
3,600
|
|
|
67,728
|
|
||||
Investment tax credit deferrals
|
|
1, 7
|
|
|
Various
|
|
—
|
|
|
17,088
|
|
|
—
|
|
|
18,797
|
|
||||
Deferred income tax adjustment
|
|
1
|
|
|
Various
|
|
—
|
|
|
16,301
|
|
|
—
|
|
|
16,260
|
|
||||
Deferred electric, natural gas and steam production costs
|
|
1
|
|
|
Less than one year
|
|
29,078
|
|
|
—
|
|
|
35,123
|
|
|
—
|
|
||||
Conservation programs
(b)
|
|
1, 11
|
|
|
Less than one year
|
|
21,168
|
|
|
—
|
|
|
24,077
|
|
|
—
|
|
||||
Other
|
|
|
|
Various
|
|
15,880
|
|
|
52,693
|
|
|
38,310
|
|
|
42,708
|
|
|||||
Total regulatory liabilities
(c)
|
|
|
|
|
|
$
|
66,126
|
|
|
$
|
1,933,488
|
|
|
$
|
101,110
|
|
|
$
|
512,933
|
|
(a)
|
Primarily relates to the revaluation of recoverable/regulated plant ADIT and
$49.6 million
revaluation impact of non-plant ADIT at Dec. 31, 2017.
|
(b)
|
Includes costs for conservation programs, as well as incentives allowed in certain jurisdictions.
|
(c)
|
Revenue subject to refund of
$0 million
and
$2.4 million
for 2017 and 2016, respectively, is included in other current liabilities.
|
14.
|
Other Comprehensive Income
|
|
|
Year Ended Dec. 31, 2017
|
||||||||||
(Thousands of Dollars)
|
|
Gains and Losses on Cash Flow Hedges
|
|
Defined Benefit and Postretirement Items
|
|
Total
|
||||||
Accumulated other comprehensive loss at Jan. 1
|
|
$
|
(22,780
|
)
|
|
$
|
(220
|
)
|
|
$
|
(23,000
|
)
|
Other comprehensive loss before reclassifications
|
|
—
|
|
|
(5
|
)
|
|
(5
|
)
|
|||
Losses reclassified from net accumulated other comprehensive loss
|
|
1,005
|
|
|
5
|
|
|
1,010
|
|
|||
Net current period other comprehensive income
|
|
1,005
|
|
|
—
|
|
|
1,005
|
|
|||
|
|
|
|
|
|
|
||||||
Adoption of ASU No. 2018-02
(a)
|
|
(4,690
|
)
|
|
(47
|
)
|
|
(4,737
|
)
|
|||
Accumulated other comprehensive loss at Dec. 31
|
|
$
|
(26,465
|
)
|
|
$
|
(267
|
)
|
|
$
|
(26,732
|
)
|
(a)
|
In 2017, PSCo implemented ASU No. 2018-02 related to the TCJA, which resulted in reclassification of certain credit balances within net accumulated other comprehensive loss to retained earnings. For further information, see Note 2.
|
|
|
Year Ended Dec. 31, 2016
|
||||||||||
(Thousands of Dollars)
|
|
Gains and Losses on Cash Flow Hedges
|
|
Defined Benefit and Postretirement Items
|
|
Total
|
||||||
Accumulated other comprehensive loss at Jan. 1
|
|
$
|
(23,836
|
)
|
|
$
|
—
|
|
|
$
|
(23,836
|
)
|
Other comprehensive loss before reclassifications
|
|
—
|
|
|
(223
|
)
|
|
(223
|
)
|
|||
Losses reclassified from net accumulated other comprehensive loss
|
|
1,056
|
|
|
3
|
|
|
1,059
|
|
|||
Net current period other comprehensive income (loss)
|
|
1,056
|
|
|
(220
|
)
|
|
836
|
|
|||
Accumulated other comprehensive loss at Dec. 31
|
|
$
|
(22,780
|
)
|
|
$
|
(220
|
)
|
|
$
|
(23,000
|
)
|
|
|
Amounts Reclassified from Accumulated
Other Comprehensive Loss |
|
||||||
(Thousands of Dollars)
|
|
Year Ended Dec. 31, 2017
|
|
Year Ended Dec. 31, 2016
|
|
||||
Losses (gains) on cash flow hedges:
|
|
|
|
|
|
||||
Interest rate derivatives
|
|
$
|
1,615
|
|
(a)
|
$
|
1,618
|
|
(a)
|
Vehicle fuel derivatives
|
|
—
|
|
(b)
|
86
|
|
(b)
|
||
Total, pre-tax
|
|
1,615
|
|
|
1,704
|
|
|
||
Tax benefit
|
|
(610
|
)
|
|
(648
|
)
|
|
||
Total, net of tax
|
|
1,005
|
|
|
1,056
|
|
|
||
Defined benefit pension and postretirement losses (gains):
|
|
|
|
|
|
||||
Amortization of net losses
|
|
9
|
|
(c)
|
5
|
|
(c)
|
||
Total, pre-tax
|
|
9
|
|
|
5
|
|
|
||
Tax benefit
|
|
(4
|
)
|
|
(2
|
)
|
|
||
Total, net of tax
|
|
5
|
|
|
3
|
|
|
||
Total amounts reclassified, net of tax
|
|
$
|
1,010
|
|
|
$
|
1,059
|
|
|
(a)
|
Included in interest charges.
|
(b)
|
Included in O&M expenses.
|
(c)
|
Included in the computation of net periodic pension and postretirement benefit costs. See Note 8 for details regarding these benefit plans.
|
15.
|
Segments and Related Information
|
•
|
PSCo’s regulated electric utility segment generates electricity which is transmitted and distributed in Colorado. In addition, this segment includes sales for resale and provides wholesale transmission service to various entities in the United States. Regulated electric utility also includes PSCo’s wholesale commodity and trading operations.
|
•
|
PSCo’s regulated natural gas utility segment transports, stores and distributes natural gas in portions of Colorado.
|
•
|
Revenues from operating segments not included above are below the necessary quantitative thresholds and are therefore included in the all other category. Those primarily include steam revenue, appliance repair services and nonutility real estate activities.
|
(Thousands of Dollars)
|
|
Regulated
Electric |
|
Regulated
Natural Gas |
|
All Other
|
|
Reconciling
Eliminations |
|
Consolidated
Total |
||||||||||
2017
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Operating revenues
(a)
|
|
$
|
3,003,808
|
|
|
$
|
995,214
|
|
|
$
|
43,487
|
|
|
$
|
—
|
|
|
$
|
4,042,509
|
|
Intersegment revenues
|
|
288
|
|
|
344
|
|
|
—
|
|
|
(632
|
)
|
|
—
|
|
|||||
Total revenues
|
|
$
|
3,004,096
|
|
|
$
|
995,558
|
|
|
$
|
43,487
|
|
|
$
|
(632
|
)
|
|
$
|
4,042,509
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Depreciation and amortization
|
|
$
|
353,560
|
|
|
$
|
113,253
|
|
|
$
|
4,702
|
|
|
$
|
—
|
|
|
$
|
471,515
|
|
Interest charges and financing costs
|
|
138,565
|
|
|
40,214
|
|
|
508
|
|
|
—
|
|
|
179,287
|
|
|||||
Income tax expense (benefit)
|
|
243,604
|
|
|
18,398
|
|
|
(9,823
|
)
|
|
—
|
|
|
252,179
|
|
|||||
Net income
|
|
370,636
|
|
|
107,822
|
|
|
15,661
|
|
|
—
|
|
|
494,119
|
|
(Thousands of Dollars)
|
|
Regulated
Electric
|
|
Regulated
Natural Gas
|
|
All Other
|
|
Reconciling
Eliminations
|
|
Consolidated
Total
|
||||||||||
2016
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Operating revenues
(a)
|
|
$
|
3,049,352
|
|
|
$
|
957,721
|
|
|
$
|
40,723
|
|
|
$
|
—
|
|
|
$
|
4,047,796
|
|
Intersegment revenues
|
|
275
|
|
|
110
|
|
|
—
|
|
|
(385
|
)
|
|
—
|
|
|||||
Total revenues
|
|
$
|
3,049,627
|
|
|
$
|
957,831
|
|
|
$
|
40,723
|
|
|
$
|
(385
|
)
|
|
$
|
4,047,796
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Depreciation and amortization
|
|
$
|
337,583
|
|
|
$
|
101,663
|
|
|
$
|
4,309
|
|
|
$
|
—
|
|
|
$
|
443,555
|
|
Interest charges and financing costs
|
|
136,274
|
|
|
37,881
|
|
|
431
|
|
|
—
|
|
|
174,586
|
|
|||||
Income tax expense (benefit)
|
|
228,825
|
|
|
45,960
|
|
|
(867
|
)
|
|
—
|
|
|
273,918
|
|
|||||
Net income
|
|
383,973
|
|
|
75,426
|
|
|
4,092
|
|
|
—
|
|
|
463,491
|
|
(Thousands of Dollars)
|
|
Regulated
Electric
|
|
Regulated
Natural Gas
|
|
All Other
|
|
Reconciling
Eliminations
|
|
Consolidated
Total
|
||||||||||
2015
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Operating revenues
(a)
|
|
$
|
3,115,257
|
|
|
$
|
1,006,666
|
|
|
$
|
41,590
|
|
|
$
|
—
|
|
|
$
|
4,163,513
|
|
Intersegment revenues
|
|
301
|
|
|
67
|
|
|
—
|
|
|
(368
|
)
|
|
—
|
|
|||||
Total revenues
|
|
$
|
3,115,558
|
|
|
$
|
1,006,733
|
|
|
$
|
41,590
|
|
|
$
|
(368
|
)
|
|
$
|
4,163,513
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
Depreciation and amortization
|
|
$
|
311,122
|
|
|
$
|
96,384
|
|
|
$
|
4,161
|
|
|
$
|
—
|
|
|
$
|
411,667
|
|
Interest charges and financing costs
|
|
136,397
|
|
|
34,935
|
|
|
576
|
|
|
—
|
|
|
171,908
|
|
|||||
Income tax expense (benefit)
|
|
234,873
|
|
|
44,192
|
|
|
(625
|
)
|
|
—
|
|
|
278,440
|
|
|||||
Net income
|
|
391,257
|
|
|
74,267
|
|
|
1,278
|
|
|
—
|
|
|
466,802
|
|
(a)
|
Operating revenues include
$6 million
,
$13 million
and
$13 million
of intercompany revenue for the years ended Dec. 31,
2017
,
2016
and
2015
, respectively. See Note 16 for further discussion of related party transactions by reportable segment.
|
16.
|
Related Party Transactions
|
(Thousands of Dollars)
|
|
2017
|
|
2016
|
|
2015
|
||||||
Operating revenues:
|
|
|
|
|
|
|
||||||
Electric
|
|
$
|
1,436
|
|
|
$
|
8,809
|
|
|
$
|
8,632
|
|
Other
|
|
4,492
|
|
|
4,525
|
|
|
4,441
|
|
|||
Operating expenses:
|
|
|
|
|
|
|
||||||
Purchased power
|
|
2
|
|
|
56
|
|
|
—
|
|
|||
Other operating expenses — paid to Xcel Energy Services Inc.
|
|
485,066
|
|
|
446,086
|
|
|
414,620
|
|
|||
Interest expense
|
|
—
|
|
|
149
|
|
|
211
|
|
|||
Interest income
|
|
—
|
|
|
—
|
|
|
45
|
|
|
|
2017
|
|
2016
|
||||||||||||
(Thousands of Dollars)
|
|
Accounts
Receivable |
|
Accounts
Payable |
|
Accounts
Receivable |
|
Accounts
Payable |
||||||||
NSP-Minnesota
|
|
$
|
7,738
|
|
|
$
|
—
|
|
|
$
|
7,669
|
|
|
$
|
—
|
|
NSP-Wisconsin
|
|
61
|
|
|
—
|
|
|
974
|
|
|
—
|
|
||||
SPS
|
|
279
|
|
|
—
|
|
|
745
|
|
|
—
|
|
||||
Other subsidiaries of Xcel Energy Inc.
|
|
6,641
|
|
|
58,748
|
|
|
33
|
|
|
98,797
|
|
||||
|
|
$
|
14,719
|
|
|
$
|
58,748
|
|
|
$
|
9,421
|
|
|
$
|
98,797
|
|
17.
|
Summarized Quarterly Financial Data (Unaudited)
|
|
|
Quarter Ended
|
||||||||||||||
(Thousands of Dollars)
|
|
March 31, 2017
|
|
June 30, 2017
|
|
Sept. 30, 2017
|
|
Dec. 31, 2017
|
||||||||
Operating revenues
|
|
$
|
1,080,534
|
|
|
$
|
930,916
|
|
|
$
|
1,030,293
|
|
|
$
|
1,000,766
|
|
Operating income
|
|
212,422
|
|
|
192,811
|
|
|
326,028
|
|
|
154,669
|
|
||||
Net income
|
|
111,546
|
|
|
100,587
|
|
|
186,077
|
|
|
95,909
|
|
|
|
Quarter Ended
|
||||||||||||||
(Thousands of Dollars)
|
|
March 31, 2016
|
|
June 30, 2016
|
|
Sept. 30, 2016
|
|
Dec. 31, 2016
|
||||||||
Operating revenues
|
|
$
|
1,057,841
|
|
|
$
|
909,852
|
|
|
$
|
1,059,177
|
|
|
$
|
1,020,926
|
|
Operating income
|
|
223,190
|
|
|
180,629
|
|
|
315,605
|
|
|
170,197
|
|
||||
Net income
|
|
115,874
|
|
|
87,344
|
|
|
173,607
|
|
|
86,666
|
|
1.
|
Consolidated Financial Statements:
|
|
|
|
Management Report on Internal Controls Over Financial Reporting
—
For the year ended Dec. 31, 2017.
|
|
Report of Independent Registered Public Accounting Firm
—
Financial Statements
|
|
Consolidated Statements of Income
—
For the three years ended Dec. 31, 2017, 2016, and 2015.
|
|
Consolidated Statements of Comprehensive Income
—
For the three years ended Dec. 31, 2017, 2016, and 2015.
|
|
Consolidated Statements of Cash Flows
—
For the three years ended Dec. 31, 2017, 2016, and 2015.
|
|
Consolidated Balance Sheets
—
As of Dec. 31, 2017 and 2016.
|
|
Consolidated Statements of Common Stockholder’s Equity
—
For the three years ended Dec. 31, 2017, 2016 and 2015.
|
|
Consolidated Statements of Capitalization — As of Dec. 31, 2017 and 2016.
|
|
|
2.
|
Schedule II
—
Valuation and Qualifying Accounts and Reserves for the years ended Dec. 31, 2017, 2016, and 2015.
|
3.
|
Exhibits
|
*
|
Indicates incorporation by reference
|
+
|
Executive Compensation Arrangements and Benefit Plans Covering Executive Officers and Directors
|
t
|
Certain portions of this agreement have been omitted pursuant to a request for confidential treatment and have been filed separately with the SEC.
|
101
|
The following materials from PSCo’s Annual Report on Form 10-K for the year ended Dec. 31, 2017 are formatted in XBRL (eXtensible Business Reporting Language): (i) the Consolidated Statements of Income, (ii) the Consolidated Statements of Comprehensive Income, (iii) the Consolidated Statements of Cash Flows, (iv) the Consolidated Balance Sheets, (v) the Consolidated Statements of Stockholder’s Equity, (vi) the Consolidated Statements of Capitalization, (vii) Notes to Consolidated Financial Statements, (viii) document and entity information, and (ix) Schedule II.
|
|
|
|
Additions
|
|
|
|
|
||||||||||||
|
Balance at
Jan. 1
|
|
Charged to Costs and Expenses
|
|
Charged to Other Accounts
(a)
|
|
Deductions from
Reserves
(b)
|
|
Balance at
Dec. 31
|
||||||||||
Allowance for bad debts:
|
|
|
|
|
|
|
|
|
|
||||||||||
2017
|
$
|
19,612
|
|
|
$
|
14,303
|
|
|
$
|
3,968
|
|
|
$
|
18,277
|
|
|
$
|
19,606
|
|
2016
|
20,122
|
|
|
14,121
|
|
|
4,447
|
|
|
19,078
|
|
|
19,612
|
|
|||||
2015
|
23,122
|
|
|
13,052
|
|
|
5,175
|
|
|
21,227
|
|
|
20,122
|
|
(a)
|
Recovery of amounts previously written off.
|
(b)
|
Deductions relate primarily to bad debt write-offs.
|
|
|
PUBLIC SERVICE COMPANY OF COLORADO
|
|
|
|
Feb. 23, 2018
|
|
/s/ ROBERT C. FRENZEL
|
|
|
Robert C. Frenzel
|
|
|
Executive Vice President, Chief Financial Officer and Director
|
|
|
(Principal Financial Officer)
|
/s/ BEN FOWKE
|
|
/s/ DAVID L. EVES
|
Ben Fowke
|
|
David L. Eves
|
Chairman, Chief Executive Officer and Director
|
|
President and Director
|
(Principal Executive Officer)
|
|
|
|
|
|
/s/ ROBERT C. FRENZEL
|
|
/s/ JEFFREY S. SAVAGE
|
Robert C. Frenzel
|
|
Jeffrey S. Savage
|
Executive Vice President, Chief Financial Officer and Director
|
|
Senior Vice President, Controller
|
(Principal Financial Officer)
|
|
(Principal Accounting Officer)
|
|
|
|
/s/ MARVIN E. MCDANIEL, JR.
|
|
|
Marvin E. McDaniel, Jr.
|
|
|
Director
|
|
|
|
Year Ended Dec. 31
|
||||||||||||||||||
|
2017
|
|
2016
|
|
2015
|
|
2014
|
|
2013
|
||||||||||
Earnings, as defined:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
Pretax income
|
$
|
746,298
|
|
|
$
|
737,409
|
|
|
$
|
745,242
|
|
|
$
|
698,779
|
|
|
$
|
704,123
|
|
Add: Fixed charges
|
241,434
|
|
|
236,080
|
|
|
235,530
|
|
|
232,832
|
|
|
232,539
|
|
|||||
Total earnings, as defined
|
$
|
987,732
|
|
|
$
|
973,489
|
|
|
$
|
980,772
|
|
|
$
|
931,611
|
|
|
$
|
936,662
|
|
Fixed charges, as defined:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
Interest charges
|
$
|
190,694
|
|
|
$
|
181,631
|
|
|
$
|
177,430
|
|
|
$
|
171,881
|
|
|
$
|
173,602
|
|
Interest charges on life insurance policy borrowings
|
271
|
|
|
203
|
|
|
233
|
|
|
214
|
|
|
245
|
|
|||||
Interest component of leases
|
50,469
|
|
|
54,246
|
|
|
57,867
|
|
|
60,737
|
|
|
58,692
|
|
|||||
Total fixed charges, as defined
|
$
|
241,434
|
|
|
$
|
236,080
|
|
|
$
|
235,530
|
|
|
$
|
232,832
|
|
|
$
|
232,539
|
|
Ratio of earnings to fixed charges
|
4.1
|
|
|
4.1
|
|
|
4.2
|
|
|
4.0
|
|
|
4.0
|
|
/s/
DELOITTE & TOUCHE LLP
|
Minneapolis, Minnesota
|
February 23, 2018
|
1.
|
I have reviewed this report on Form 10-K of Public Service Company of Colorado;
|
2.
|
Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
|
3.
|
Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
|
4.
|
The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
|
a.
|
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
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b.
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Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
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c.
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Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
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d.
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Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
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5.
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The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
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a.
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All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
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b.
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Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
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/s/ BEN FOWKE
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Ben Fowke
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Chairman, Chief Executive Officer and Director
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1.
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I have reviewed this report on Form 10-K of Public Service Company of Colorado;
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2.
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Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
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3.
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Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
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4.
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The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
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a.
|
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
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b.
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Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
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c.
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Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
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d.
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Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
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5.
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The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
|
a.
|
All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
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b.
|
Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
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/s/ ROBERT C. FRENZEL
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Robert C. Frenzel
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Executive Vice President, Chief Financial Officer and Director
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(1)
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The Form 10-K fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
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(2)
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The information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of PSCo as of the dates and for the periods expressed in the Form 10-K.
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/s/ BEN FOWKE
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|
Ben Fowke
|
|
Chairman, Chief Executive Officer and Director
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|
|
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/s/ ROBERT C. FRENZEL
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|
Robert C. Frenzel
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|
Executive Vice President, Chief Financial Officer and Director
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•
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Economic conditions, including inflation rates, monetary fluctuations and their impact on capital expenditures;
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•
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The risk of a significant slowdown in growth or decline in the U.S. economy, the risk of delay in growth recovery in the U.S. economy or the risk of increased cost for insurance premiums, security and other items as a consequence of past or future terrorist attacks;
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•
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Trade, monetary, fiscal, taxation and environmental policies of governments, agencies and similar organizations in geographic areas where PSCo has a financial interest;
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•
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Customer business conditions, including demand for their products or services and supply of labor and materials used in creating their products and services;
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•
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Financial or regulatory accounting principles or policies imposed by the FASB, the SEC, the Federal Energy Regulatory Commission and similar entities with regulatory oversight;
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•
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Availability or cost of capital such as changes in: interest rates; market perceptions of the utility industry, PSCo, Xcel Energy Inc. or any of its other subsidiaries; or security ratings;
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•
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Factors affecting utility and nonutility operations such as unusual weather conditions; catastrophic weather-related damage; unscheduled generation outages, maintenance or repairs; unanticipated changes to fossil fuel or natural gas supply costs or availability due to higher demand, shortages, transportation problems or other developments; environmental incidents; cyber incidents; or electric transmission or natural gas pipeline constraints;
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•
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Employee workforce factors, including loss or retirement of key executives, collective-bargaining agreements with union employees, or work stoppages;
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•
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Increased competition in the utility industry or additional competition in the markets served by PSCo, Xcel Energy Inc. or any of its other subsidiaries;
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•
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State, federal and foreign legislative and regulatory initiatives that affect cost and investment recovery, have an impact on rate structures and affect the speed and degree to which competition enters the electric and natural gas markets; industry restructuring initiatives; transmission system operation and/or administration initiatives; recovery of investments made under traditional regulation; nature of competitors entering the industry; retail wheeling; a new pricing structure; and former customers entering the generation market;
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•
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Environmental laws and regulations, including legislation and regulations relating to climate change, and the associated cost of compliance;
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•
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Rate-setting policies or procedures of regulatory entities, including environmental externalities, which are values established by regulators assigning environmental costs to each method of electricity generation when evaluating generation resource options;
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•
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Social attitudes regarding the utility and power industries;
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•
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Cost and other effects of legal and administrative proceedings, settlements, investigations and claims;
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•
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Technological developments that result in competitive disadvantages and create the potential for impairment of existing assets;
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•
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Risks associated with implementations of new technologies; and
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•
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Other business or investment considerations that may be disclosed from time to time in PSCo’s SEC filings, including “Risk Factors” in Item 1A of this Form 10-K, or in other publicly disseminated written documents.
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