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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K
(Mark One)
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2019 or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
001-31387
(Commission File Number)
Northern States Power Company
(Exact name of registrant as specificed in its charter)
Minnesota
41-1967505
(State or other jurisdiction of incorporation or organization)
(I.R.S. Employer Identification No.)
414 Nicollet Mall
Minneapolis
Minnesota
55401
(Address of principal executive offices)
(Zip Code)
(612)
330-5500
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act: 
Title of each class
 
Trading Symbol
 
Name of each exchange on which registered
N/A
 
N/A
 
N/A
Securities registered pursuant to section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes No
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes No
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company.  See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of the Exchange Act. Large accelerated filer  Accelerated filer  Non-accelerated filer Smaller reporting company Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes  No
As of Feb. 21, 2020, 1,000,000 shares of common stock, par value $0.01 per share, were outstanding, all of which were held by Xcel Energy Inc., a Minnesota corporation.
DOCUMENTS INCORPORATED BY REFERENCE
The information required by Item 14 of Form 10-K is set forth under the heading “Independent Registered Public Accounting Firm – Audit and Non-Audit Fees” in Xcel Energy Inc.’s definitive Proxy Statement for the 2020 Annual Meeting of Shareholders which definitive Proxy Statement is expected to be filed with the SEC on or about April 6, 2020. Such information set forth under such heading is incorporated herein by this reference hereto.
Northern States Power Company meets the conditions set forth in General Instructions I(1)(a) and (b) of Form 10-K and is therefore filing this form with the reduced disclosure format permitted by General Instruction I(2).
 



TABLE OF CONTENTS
PART I
 
 
Item 1 —
 
 
 
 
 
 
 
 
 
Item 1A —
Item 1B —
Item 2 —
Item 3 —
Item 4 —
 
 
 
PART II

 
 
Item 5 —
Item 6 —
Item 7 —
Item 7A —
Item 8 —
Item 9 —
Item 9A —
Item 9B —
 
 
 
PART III

 
 
Item 10 —
Item 11 —
Item 12 —
Item 13 —
Item 14 —
 
 
 
PART IV

 
 
Item 15 —
Item 16 —
 
 
 

This Form 10-K is filed by NSP-Minnesota. NSP-Minnesota is a wholly owned subsidiary of Xcel Energy Inc. Additional information on Xcel Energy is available in various filings with the SEC. This report should be read in its entirety.

2


PART I
Item l — Business
Definitions of Abbreviations
Xcel Energy Inc.’s Subsidiaries and Affiliates (current and former)
NSPM
NSP-Minnesota
NSP-Minnesota
Northern States Power Company, a Minnesota corporation
NSP System
The electric production and transmission system of NSP-Minnesota and NSP-Wisconsin operated on an integrated basis and managed by NSP-Minnesota
NSP-Wisconsin
Northern States Power Company, a Wisconsin corporation
PSCo
Public Service Company of Colorado
SPS
Southwestern Public Service Company
Utility subsidiaries
NSP-Minnesota, NSP-Wisconsin, PSCo and SPS
Xcel Energy
Xcel Energy Inc. and its subsidiaries
Federal and State Regulatory Agencies
D.C. Circuit
United States Court of Appeals for the District of Columbia Circuit
DOC
Minnesota Department of Commerce
DOE
United States Department of Energy
DOT
United States Department of Transportation
EPA
United States Environmental Protection Agency
FERC
Federal Energy Regulatory Commission
IRS
Internal Revenue Service
MPUC
Minnesota Public Utilities Commission
NDPSC
North Dakota Public Service Commission
NERC
North American Electric Reliability Corporation
NRC
Nuclear Regulatory Commission
OAG
Minnesota Office of the Attorney General
PHMSA
Pipeline and Hazardous Materials Safety Administration
SDPUC
South Dakota Public Utilities Commission
SEC
Securities and Exchange Commission
Electric, Purchased Gas and Resource Adjustment Clauses
CIP
Conservation improvement program
DSM
Demand side management
EIR
Environmental improvement rider
FCA
Fuel clause adjustment
GUIC
Gas utility infrastructure cost rider
PGA
Purchased gas adjustment
RDF
Renewable development fund
RER
Renewable energy rider
RES
Renewable energy standard
SEP
State energy policy rider
TCR
Transmission cost recovery adjustment
Other
ADIT
Accumulated deferred income taxes
AFUDC
Allowance for funds used during construction
ALJ
Administrative law judge
ARO
Asset retirement obligation
ASC
FASB Accounting Standards Codification
ASU
FASB Accounting Standards Update
C&I
Commercial and Industrial
CAPM
Capital Asset Pricing Model
CapX2020
Alliance of electric cooperatives, municipals and investor-owned utilities in the upper Midwest involved in a joint transmission line planning and construction effort
CC
Combined cycle
CCR
Coal combustion residuals
CCR Rule
Final rule (40 CFR 257.50 - 257.107) published by the EPA regulating the management, storage and disposal of CCRs as a nonhazardous waste
CEO
Chief executive officer
CFO
Chief financial officer
CO2
Carbon dioxide
 
Corps
U.S. Army Corps of Engineers
CT
Combustion turbine
CWA
Clean Water Act
CWIP
Construction work in progress
DCF
Discounted Cash Flows
DR
Demand response
ELG
Effluent limitations guidelines
EMANI
European Mutual Association for Nuclear Insurance
ETR
Effective tax rate
FASB
Financial Accounting Standards Board
FTR
Financial transmission right
GAAP
Generally accepted accounting principles
GE
General Electric
GHG
Greenhouse gas
IPP
Independent power producing entity
IRP
Integrated Resource Plan
ISFSI
Independent spent fuel storage installation
ITC
Investment tax credit
JOA
Joint operating agreement
LNG
Liquefied natural gas
MEC
Mankato Energy Center
MGP
Manufactured gas plant
MISO
Midcontinent Independent System Operator, Inc.
Moody’s
Moody’s Investor Services
Native load
Customer demand of retail and wholesale customers that a utility has an obligation to serve under statute or long-term contract.
NAV
Net asset value
NEIL
Nuclear Electric Insurance Ltd.
NETO
New England Transmission Owners
NOL
Net operating loss
O&M
Operating and maintenance
Paris Agreement
Establishes a framework for GHG mitigation actions by all countries (“nationally determined contributions”)
PI
Prairie Island nuclear generating plant
Pipeline Safety Act
Pipeline Safety, Regulatory Certainty, and Job Creation Act
PPA
Purchased power agreement
PTC
Production tax credit
REC
Renewable energy credit
ROE
Return on equity
ROFR
Right-of-first-refusal
RTO
Regional Transmission Organization
SAB
Staff Accounting Bulletin
SERP
Supplemental executive retirement plan
SMMPA
Southern Minnesota Municipal Power Agency
Standard & Poor’s
Standard & Poor’s Ratings Services
TCJA
2017 federal tax reform enacted as Public Law No: 115-97, commonly referred to as the Tax Cuts and Jobs Act
TO
Transmission owner
VaR
Value at Risk
VIE
Variable interest entity
Westinghouse
Westinghouse Electric Corporation
Measurements
Bcf
Billion cubic feet
KV
Kilovolts
KWh
Kilowatt hours
MMBtu
Million British thermal units
MW
Megawatts
MWh
Megawatt hours

3


Forward-Looking Statements

Except for the historical statements contained in this report, the matters discussed herein are forward-looking statements that are subject to certain risks, uncertainties and assumptions. Such forward-looking statements, assumptions and other statements are intended to be identified in this document by the words “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “objective,” “outlook,” “plan,” “project,” “possible,” “potential,” “should,” “will,” “would” and similar expressions. Actual results may vary materially. Forward-looking statements speak only as of the date they are made, and we expressly disclaim any obligation to update any forward-looking information. The following factors, in addition to those discussed elsewhere in this Annual Report on Form 10-K for the fiscal year ended Dec. 31, 2019 (including risk factors listed from time to time by NSP-Minnesota in reports filed with the SEC, including “Risk Factors” in Item 1A of this Annual Report on Form 10-K hereto), could cause actual results to differ materially from management expectations as suggested by such forward-looking information: operational safety, including our nuclear generation facilities; successful long-term operational planning; commodity risks associated with energy markets and production; rising energy prices and fuel costs; qualified employee work force and third-party contractor factors; ability to recover costs, changes in regulation and subsidiaries’ ability to recover costs from customers; reductions in our credit ratings and the cost of maintaining certain contractual relationships; general economic conditions, including inflation rates, monetary fluctuations and their impact on capital expenditures and the ability of NSP-Minnesota and its subsidiaries to obtain financing on favorable terms; availability or cost of capital; our customers’ and counterparties’ ability to pay their debts to us; assumptions and costs relating to funding our employee benefit plans and health care benefits; our subsidiaries’ ability to make dividend payments; tax laws; effects of geopolitical events, including war and acts of terrorism; cyber security threats and data security breaches; seasonal weather patterns; changes in environmental laws and regulations; climate change and other weather; natural disaster and resource depletion, including compliance with any accompanying legislative and regulatory changes; and costs of potential regulatory penalties.
Where to Find More Information

NSP-Minnesota is a wholly owned subsidiary of Xcel Energy Inc., and Xcel Energy’s website address is www.xcelenergy.com. Xcel Energy makes available, free of charge through its website, its annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 as soon as reasonably practicable after the reports are electronically filed with or furnished to the SEC. The SEC maintains an internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically at http://www.sec.gov.
Company Overview
 
 
 
 
nspmstatea11.jpg
 
 
Electric customers
1.5 million
 
 
NSP-Minnesota was incorporated in 2000 under the laws of Minnesota. NSP-Minnesota conducts business in Minnesota, North Dakota and South Dakota and has electric operations in all three states including the generation, purchase, transmission, distribution and sale of electricity. NSP-Minnesota and NSP-Wisconsin electric operations are managed on the NSP System. NSP-Minnesota also purchases, transports, distributes and sells natural gas to retail customers and transports customer-owned natural gas in Minnesota and North Dakota.

Natural gas customers
0.5 million
 
 
Total assets
$19.9 billion
 
 
Rate Base
$11.2 billion
 
 
ROE
9.31%
 
 
Electric generating capacity
7,712 MW
 
 
Gas storage capacity
17.1 Bcf
 
 
Electric transmission lines (conductor miles)

33,528 miles
 
 
Electric distribution lines (conductor miles)

80,186 miles
 
 
Natural gas transmission lines
86 miles
 
 
Natural gas distribution lines
10,518 miles
 
 
 
 
 
 
 
Electric Operations
NSP-Minnesota had electric sales volume of 41,298 (millions of KWh), 1,497,043 customers and electric revenues of $4,506.6 (millions of dollars) for 2019.
 
chart-0dbfa0dea58b999e6c4a01.jpgchart-746b6498807d4582884a01.jpgchart-a3fdd820663c01ee50ea01.jpg
 

4


Sales/Revenue Statistics
 
 
2019
 
2018
KWH sales per retail customer
 
22,405

 
23,511

Revenue per retail customer
 
$2,368

 
$2,414

Residential revenue per KWh
 

13.22
¢
 

13.03
¢
Large C&I revenue per KWh
 

7.96
¢
 

7.69
¢
Small C&I revenue per KWh
 

10.15
¢
 

9.79
¢
Total retail revenue per KWh
 

10.57
¢
 

10.27
¢
Owned and Purchased Energy Generation — 2019
chart-7f2ddbb4ef816110938a01.jpg
Electric Energy Sources
Total electric generation by source (including energy market purchases) for the year ended Dec. 31, 2019:
 
chart-ddc0ef7186d0bb0aa1ca01.jpg
*Distributed generation from the Solar*Rewards® program is not included (approximately 12.3 million KWh for 2019).
 
 
Renewable Energy Sources — NSP System
The NSP System’s renewable energy portfolio includes wind, hydroelectric, biomass and solar power from both owned generating facilities and PPAs. Renewable percentages will vary year over year based on system additions, weather, system demand and transmission constraints.
See Item 2 — Properties for further information.
Renewable energy as a percentage of total energy for 2019:
chart-9ae69ae72ee5f3b9c69.jpg
(a) 
Includes biomass and hydroelectric
Wind Energy Sources
Owned — Owned and operated wind farms with corresponding capacity:
2019
 
2018
Wind Farms
 
Capacity
 
Wind Farms
 
Capacity
7
 
1090 MW
 
5
 
840 MW
PPAs — Number of PPAs with range:
2019
 
2018
PPAs
 
Range
 
PPAs
 
Range
131
 
0.7 MW - 205.5 MW
 
132
 
0.7 MW - 205.5 MW
Capacity — Wind capacity:
2019
 
2018
2,780 MW
 
2,550 MW
Average Cost (Owned) — Average cost per MWh of wind energy from owned generation:
2019
 
2018
$35
 
$37
Average Cost (PPAs) — Average cost per MWh of wind energy under existing PPAs:
2019
 
2018
$41
 
$44

5


Wind Energy Development
NSP-Minnesota placed approximately 250 MW of wind into service during 2019:
Project
 
Capacity
Foxtail
 
150 MW
Lake Benton
 
99 MW
NSP-Minnesota currently has approximately 1,170 MW of owned wind under development or construction and approximately 450 MW of planned PPAs with an estimated completion date of 2021 or earlier:
Project
 
Capacity
 
Estimated Completion
Freeborn
 
200 MW
 
2020
Blazing Star 1
 
200 MW
 
2020
Blazing Star 2
 
200 MW
 
2020
Crowned Ridge (a)
 
200 MW
 
2020
Jeffers (b)
 
44 MW
 
2020
CWN (b)
 
26 MW
 
2020
Dakota Range
 
300 MW
 
2021
Various PPAs
 
~450 MW
 
2020-2021
(a) 
Build-own-transfer project.
(b) 
Repowering project.
Solar Energy Sources
Solar energy PPAs:
Type
 
Capacity
Distributed Generation
 
736 MW
Utility-Scale
 
266 MW
Other Carbon-Free Energy Sources NSP System
The NSP System’s other carbon-free energy portfolio includes nuclear from owned generating facilities.
See Item 2 — Properties for further information.
Nuclear Energy Sources
The NSP System has two nuclear plants (owned by NSP-Minnesota) with approximately 1,700 MW of total 2019 net summer dependable capacity.
NSP-Minnesota secures contracts for uranium concentrates, uranium conversion, uranium enrichment and fuel fabrication to operate its nuclear plants. The contract strategy involves a portfolio of spot purchases and medium and long-term contracts for uranium concentrates, conversion services and enrichment services with multiple producers and with a focus on diversification and alternate sources to minimize potential impacts caused by supply interruptions due to geographical and world political issues.
Nuclear Fuel Cost
Delivered cost per MMBtu of nuclear fuel consumed for owned electric generation and the percentage of total fuel requirements:
 
 
Nuclear
 
 
Cost
 
Percent
2019
 
$
0.81

 
45
%
2018
 
0.80

 
45

 
Fossil Fuel Energy Sources NSP System
The NSP System’s fossil fuel energy portfolio includes coal and natural gas power from both owned generating facilities and PPAs.
See Item 2 — Properties for further information.
Coal Energy Sources
NSP System has three coal plants with approximately 2,400 MW of total 2019 net summer dependable capacity.
Approved and proposed coal plant retirements:
Approved (2019 to 2027)
Year
 
Plant
 
Capacity
2023
 
Sherco Unit 2
 
682 MW
2026
 
Sherco Unit 1
 
680 MW
Proposed (2028 to 2030)
Year
 
Plant
 
Capacity
2028
 
A.S King
 
511 MW
2030
 
Sherco Unit 3
 
517 MW
Coal Fuel Cost
Delivered cost per MMBtu of coal consumed for owned electric generation and the percentage of total fuel requirements:
 
 
Coal (a)
 
 
Cost
 
Percent
2019
 
$
2.02

 
36
%
2018
 
2.13

 
42

(a) 
Includes refuse-derived fuel and wood for the NSP System.
Natural Gas Energy Sources
The NSP System has eight natural gas plants with approximately 2,800 MW of total 2019 net summer dependable capacity.
Natural gas supplies, transportation and storage services for power plants are procured to provide an adequate supply of fuel. Remaining requirements are procured through a liquid spot market. Generally, natural gas supply contracts have variable pricing that is tied to natural gas indices. Natural gas supply and transportation agreements include obligations for the purchase and/or delivery of specified volumes or payments in lieu of delivery.
Natural Gas Cost
Delivered cost per MMBtu of natural gas consumed for owned electric generation and the percentage of total fuel requirements:
 
 
Natural Gas
 
 
Cost
 
Percent
2019
 
$
3.09

 
19
%
2018
 
3.87

 
13

Capacity and Demand
Uninterrupted system peak demand and occurrence date:
System Peak Demand (in MW)
2019
 
2018
8,774

 
July 19
 
8,927

 
June 29



6


Transmission
Transmission lines deliver electricity over long distances from power sources to transmission substations closer to homes and businesses. A strong transmission system ensures continued reliable and affordable service, ability to meet state and regional energy policy goals, and support a diverse generation mix, including renewable energy. NSP-Minnesota owns more than 33,500 conductor miles of transmission lines across its service territory.
 
During 2019, NSP-Minnesota completed the following transmission projects:
Project
 
Miles
 
Size
Maple River-Red River
 
5

 
115 KV
Upcoming transmission projects:
Project
 
Miles
 
Size
 
Completion Date
Huntley-Wilmarth
 
50

 
345 KV
 
2021

Natural Gas Operations
Natural gas operations consist of purchase, transportation and distribution of natural gas to end use residential, C&I and transport customers. NSP-Minnesota had natural gas deliveries of 106,292 (thousands of MMBtu), 525,511 customers and natural gas revenues of $571.3 (millions of dollars) for 2019.
 
chart-93c01e3ae1ca6cd727ca01.jpgchart-b59794efae188da21f8a01.jpgchart-8aeeb4e8db55748e03ca01.jpg
 
Sales/Revenue Statistics
 
 
2019
 
2018
MMBtu sales per retail customer
 
176.96

 
172.78

Revenue per retail customer
 
$
1,072.29

 
$
1,094.53

Residential revenue per MMBtu
 
7.04

 
7.29

C&I revenue per MMBtu
 
5.12

 
5.42

Transportation and other revenue per MMBtu
 
0.59

 
1.09

Capability and Demand
Natural gas supply requirements are categorized as firm or interruptible (customers with an alternate energy supply).
Maximum daily output (firm and interruptible) and occurrence date:
2019
 
2018
MMBtu
 
Date
 
MMBtu
 
Date
897,615

(a) 
Feb. 25
 
786,751

 
Jan. 12
(a) 
Increase in maximum MMBtu output due to colder winter temperatures in 2019.
Natural Gas Supply and Costs
NSP-Minnesota actively seeks natural gas supply, transportation and storage alternatives to yield a diversified portfolio, which provides increased flexibility, decreased interruption and financial risk and economical rates. In addition, NSP-Minnesota conducts natural gas price hedging activities approved by its state commissions.
Average delivered cost per MMBtu of natural gas for regulated retail distribution:
 
2019
 
2018
$
3.71

 
$
4.03

NSP-Minnesota has natural gas supply transportation and storage agreements that include obligations for purchase and/or delivery of specified volumes or to make payments in lieu of delivery.
See Item 2 - Properties for further information.
General
Seasonality
Demand for electric power and natural gas is affected by seasonal differences in the weather. In general, peak sales of electricity occur in the summer months and peak sales of natural gas occur in the winter months. As a result, the overall operating results may fluctuate substantially on a seasonal basis. Additionally, NSP-Minnesota’s operations have historically generated less revenues and income when weather conditions are milder in the winter and cooler in the summer.
Competition
NSP-Minnesota is subject to public policies that promote competition and development of energy markets. NSP-Minnesota’s industrial and large commercial customers have the ability to generate their own electricity. In addition, customers may have the option of substituting other fuels or relocating their facilities to a lower cost region.

7