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xel-20260205FALSEXCEL ENERGY INC0000072903MNNORTHERN STATES POWER CO0001123852MNNORTHERN STATES POWER CO /WI/0000072909WIPUBLIC SERVICE CO OF COLORADO0000081018COSOUTHWESTERN PUBLIC SERVICE CO0000092521NM00000729032026-02-052026-02-050000072903xel:NORTHERNSTATESPOWERCOMember2026-02-052026-02-050000072903xel:NORTHERNSTATESPOWERCOWIMember2026-02-052026-02-050000072903xel:PUBLICSERVICECOOFCOLORADOMember2026-02-052026-02-050000072903xel:SOUTHWESTERNPUBLICSERVICECOMember2026-02-052026-02-050000072903us-gaap:CommonStockMember2026-02-052026-02-050000072903xel:A6.25JuniorSubordinatedNotesDue2085Member2026-02-052026-02-05

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 5, 2026

Commission File Number Exact Name of Registrant as Specified in its Charter; State of Incorporation; Address of Principal Executive Offices; and Telephone Number IRS Employer Identification Number

001-3034 XCEL ENERGY INC. 41-0448030

(a Minnesota corporation) 414 Nicollet Mall Minneapolis,Minnesota55401 (612)330-5500

000-31387 NORTHERN STATES POWER COMPANY 41-1967505

(a Minnesota corporation) 414 Nicollet Mall Minneapolis,Minnesota55401 (612)330-5500

001-03140 NORTHERN STATES POWER COMPANY 39-0508315

(a Wisconsin corporation) 1414 W. Hamilton Avenue Eau Claire,Wisconsin54701 (715)737-2625

001-3280 PUBLIC SERVICE COMPANY OF COLORADO 84-0296600

(a Colorado corporation) 3500 Blake Street Denver,Colorado80205 (303)571-7511

001-03789 SOUTHWESTERN PUBLIC SERVICE COMPANY 75-0575400

(a New Mexico corporation) 790 South Buchanan Amarillo,Texas79101 (303)571-7511

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). 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. ☐ Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common StockXELNasdaq Stock Market LLC 6.25% Junior Subordinated Notes due 2085XELLLNasdaq Stock Market LLC

Item 2.02. Results of Operations and Financial Condition

On February 5, 2026, Xcel Energy released earnings results for the fourth quarter of 2025.

See additional information in the Earnings Release furnished as exhibit 99.01.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits

Exhibit No. Description

99.01 Earnings Release of Xcel Energy dated Feb. 5, 2026.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Feb. 5, 2026Xcel Energy Inc. (a Minnesota corporation)

Northern States Power Company (a Minnesota corporation)

Northern States Power Company (a Wisconsin corporation)

Public Service Company of Colorado (a Colorado corporation)

Southwestern Public Service Company (a New Mexico corporation)

/s/ BRIAN J. VAN ABEL Brian J. Van Abel Executive Vice President, Chief Financial Officer

xel-20251030FALSEXCEL ENERGY INC0000072903MNNORTHERN STATES POWER CO0001123852MNNORTHERN STATES POWER CO /WI/0000072909WIPUBLIC SERVICE CO OF COLORADO0000081018COSOUTHWESTERN PUBLIC SERVICE CO0000092521NM00000729032025-10-302025-10-300000072903xel:NORTHERNSTATESPOWERCOMember2025-10-302025-10-300000072903xel:NORTHERNSTATESPOWERCOWIMember2025-10-302025-10-300000072903xel:PUBLICSERVICECOOFCOLORADOMember2025-10-302025-10-300000072903xel:SOUTHWESTERNPUBLICSERVICECOMember2025-10-302025-10-300000072903us-gaap:CommonStockMember2025-10-302025-10-300000072903xel:A6.25JuniorSubordinatedNotesDue2085Member2025-10-302025-10-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 30, 2025

Commission File Number Exact Name of Registrant as Specified in its Charter; State of Incorporation; Address of Principal Executive Offices; and Telephone Number IRS Employer Identification Number

001-3034 XCEL ENERGY INC. 41-0448030

(a Minnesota corporation) 414 Nicollet Mall Minneapolis,Minnesota55401 (612)330-5500

000-31387 NORTHERN STATES POWER COMPANY 41-1967505

(a Minnesota corporation) 414 Nicollet Mall Minneapolis,Minnesota55401 (612)330-5500

001-03140 NORTHERN STATES POWER COMPANY 39-0508315

(a Wisconsin corporation) 1414 W. Hamilton Avenue Eau Claire,Wisconsin54701 (715)737-2625

001-3280 PUBLIC SERVICE COMPANY OF COLORADO 84-0296600

(a Colorado corporation) 3500 Blake Street Denver,Colorado80205 (303)571-7511

001-03789 SOUTHWESTERN PUBLIC SERVICE COMPANY 75-0575400

(a New Mexico corporation) 790 South Buchanan Amarillo,Texas79101 (303)571-7511

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). 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. ☐ Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common StockXELNasdaq Stock Market LLC 6.25% Junior Subordinated Notes due 2085XELLLNasdaq Stock Market LLC

Item 2.02. Results of Operations and Financial Condition

On October 30, 2025, Xcel Energy released earnings results for the third quarter of 2025.

See additional information in the Earnings Release furnished as exhibit 99.01.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits

Exhibit No. Description

99.01 Earnings Release of Xcel Energy dated October 30, 2025.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Oct. 30, 2025Xcel Energy Inc. (a Minnesota corporation)

Northern States Power Company (a Minnesota corporation)

Northern States Power Company (a Wisconsin corporation)

Public Service Company of Colorado (a Colorado corporation)

Southwestern Public Service Company (a New Mexico corporation)

/s/ BRIAN J. VAN ABEL Brian J. Van Abel Executive Vice President, Chief Financial Officer