NORTHERN STATES POWER CO

Overview

• IndustryElectric & Other Services Combined²
• HeadquartersEau Claire, United States²
• Incorporated inMN³
• Business address414 Nicollet Mall, Minneapolis, Mn 55401³
• Filer categoryNon-accelerated filer³
• Legal formBusiness Corporation²
• LEIOOVRSRHKQSBLKRB7QM17²
• StatusActive²
• LEI statusIssued and current²
• Registered addressC/O CORPORATION SERVICE COMPANY, 53703-4655 Madison, United States²
• Registered withCorporation Section (Division of Corporate & Consumer Services, Department of Financial Institutions), 1N01669²

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Corporate structure

NORTHERN STATES POWER CO is part of a group headed by Xcel Energy. 21 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

What it owns

What NORTHERN STATES POWER CO reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Property and equipment

Inventory

Properties, in its own words

Virtually all of the utility plant property of NSP-Minnesota is subject to the lien of its first mortgage bond indenture.

Station, Location and Unit at Dec. 31, 2025 · Fuel · Installed · MW (a)

Item 2 of the 10-K filed Feb 25, 2026.¹³

Subsidiaries and ownership

Parent company (GLEIF)

• Xcel Energy²

Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Timeline

1. Oct 9, 20268-K Other events¹⁴
2. Jul 30, 20268-K Results of operations¹⁵
3. Jun 22, 20268-K Other events¹⁶
4. May 11, 20268-K Other events¹⁷
5. Apr 30, 20268-K Results of operations¹⁸
6. Mar 12, 20268-K Other events¹⁹
7. Feb 5, 20268-K Results of operations²⁰
8. Oct 30, 20258-K Results of operations²¹
9. Aug 25, 20258-K Other events²²
10. Jul 31, 20258-K Results of operations²³
11. Jun 30, 20258-K Other events²⁴
12. May 7, 20258-K Entered a material agreement; Ended a material agreement; New debt or obligation²⁵
13. Feb 26, 2020Parent Directly consolidated by Xcel Energy²
14. Nov 16, 1901Founded NORTHERN STATES POWER CO is founded²

Calendar

Coming up

1. Around Oct 29, 2026Next results, estimated About a quarter after its last report. The company hasn't announced the date.

When it reported results

1. Jul 30, 2026Reported quarterly or annual results¹⁵
2. Apr 30, 2026Reported quarterly or annual results¹⁸
3. Feb 5, 2026Reported quarterly or annual results²⁰
4. Oct 30, 2025Reported quarterly or annual results²¹
5. Jul 31, 2025Reported quarterly or annual results²³
6. Apr 24, 2025Reported quarterly or annual results²⁶
7. Feb 6, 2025Reported quarterly or annual results²⁷
8. Oct 31, 2024Reported quarterly or annual results²⁸

Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar

Filings

81 filings to the SEC since October 2021: 5 annual reports, 15 quarterly reports, 46 major events, 15 other. The latest 20:

1. Oct 9, 20268-K EDGAR
2. Jul 30, 202610-Q EDGAR
3. Jul 30, 20268-K EDGAR
4. Jun 22, 20268-K EDGAR
5. May 11, 20268-K EDGAR
6. Apr 30, 202610-Q EDGAR
7. Apr 30, 20268-K EDGAR
8. Mar 12, 20268-K EDGAR
9. Mar 6, 2026424B2 EDGAR
10. Mar 5, 2026FWP EDGAR
11. Mar 5, 2026424B5 EDGAR
12. Feb 25, 202610-K EDGAR
13. Feb 5, 20268-K EDGAR
14. Oct 30, 202510-Q EDGAR
15. Oct 30, 20258-K EDGAR
16. Aug 25, 20258-K EDGAR
17. Jul 31, 202510-Q EDGAR
18. Jul 31, 20258-K EDGAR
19. Jun 30, 20258-K EDGAR
20. May 7, 20258-K EDGAR

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

SEC filer profile

How NORTHERN STATES POWER CO is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

• Name on EDGARNORTHERN STATES POWER CO¹
• CIK0001123852
• Employer ID (EIN)41-1967505¹³
• Filer statusNon-accelerated filer not an emerging growth company; not a smaller reporting company; not a shell company¹³
• Incorporated inMinnesota¹³
• Fiscal year endsDecember 31¹
• Industry code (SIC)4931 Electric & Other Services Combined¹
• SEC reviewing officeOffice of Energy & Transportation, Division of Corporation Finance¹
• Business address414 Nicollet Mall, Minneapolis, MN 55401¹
• Phone6123305500¹
• Shares outstanding1,000,000 as of Jul 30, 2026¹⁰
• AuditorDELOITTE & TOUCHE LLP, Minneapolis, Minnesota PCAOB ID 34; no auditor attestation of internal control over financial reporting¹³
• On EDGAR sinceOct 5, 2000¹
• Filings400 in all: 8-K (204), 10-Q (78), 10-K (27), 424B5 (22), 424B2 (20), FWP (19), S-3ASR (6), 10-Q/A (4)¹
  All 20 form types

  424B3 (4), S-3 (4), 10-12G/A (2), EFFECT (2), 10-12G (1), 15-12G (1), 25-NSE (1), 8-A12B (1), CERTNYS (1), POS AM (1), REGDEX (1), S-4 (1)

• Latest filingsAnnual report (10-K) Feb 25, 2026
  Quarterly report (10-Q) Jul 30, 2026
  Latest 8-K (8-K) Oct 9, 2026

Risk factors and legal proceedings

The risks NORTHERN STATES POWER CO names in Item 1A of its 10-K filed Feb 25, 2026: 30 risks under these headings, as written.¹³

• Risks Associated with Our Business
• Operational Risks
• Our natural gas and electric generation/transmission and distribution operations involve numerous risks that may result in accidents and other operating risks and costs.
• Our utility operations, resource adequacy and system reliability are subject to long-term planning and project risks.
• Our utility operations are highly dependent on suppliers to deliver components in accordance with short and long-term project schedules.
• We are subject to physical and financial risks associated with climate change and other weather, natural disaster and resource depletion impacts.
• Our utilities have significant risks associated with wildfires.
• We are subject to commodity risks and other risks associated with energy markets and energy production.
• Failure to attract and retain a qualified workforce could have an adverse effect on operations.
• Our operations use third-party contractors in addition to employees to perform periodic and ongoing work.
• Actions of our employees, directors, third-party contractors or suppliers could expose us to reputational risks.
• We are subject to the risks of nuclear generation.

Legal proceedings

NSP-Minnesota is involved in various litigation matters in the ordinary course of business. The assessment of whether a loss is probable or is a reasonable possibility, and whether the loss or a range of loss is estimable, often involves a series of complex judgments about future events. Management maintains accruals for losses probable of being incurred and subject to reasonable estimation.

Management is sometimes unable to estimate an amount or range of a reasonably possible loss in certain situations, including but not limited to, when (1) the damages sought are indeterminate, (2) the proceedings are in the early stages, or (3) the matters involve novel or unsettled legal theories. In such cases, there is considerable uncertainty regarding the timing or ultimate resolution of such matters, including a possible eventual loss.

For current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, would have a material effect on NSP-Minnesota’s consolidated financial statements. Legal fees are generally expensed as incurred.

See Note 10 to the consolidated financial statements, Item 1 and Item 7 for further information.

The opening of Item 3, Legal Proceedings.¹³