{"url_path":"/sec/cik-0000100122/10-k/2026/item-16","section_key":"item-16","section_title":"Item 16 FORM 10-K SUMMARY","topic":"sec","document":{"doc_type":"10-K","doc_date":"2026-02-12","source_url":"https://www.sec.gov/Archives/edgar/data/100122/0000100122-26-000006-index.html","accession_number":"0000100122-26-000006","cik":"0000100122","ticker":null,"issuer_name":"TUCSON ELECTRIC POWER CO","edgar_url":"https://www.sec.gov/Archives/edgar/data/100122/0000100122-26-000006-index.html","primary_entity_key":"0000100122","primary_entity_name":"TUCSON ELECTRIC POWER CO"},"word_count":888,"has_tables":true,"body_markdown":"ITEM 16. FORM 10-K SUMMARY\n\nNot Applicable.\n\n84\n\n[Table of Contents](#iaa4bfb93949147c689d89e1563a40f0a_7)\n\nExhibit Index\n\nExhibit No.Description\n\n[3(a)](https://www.sec.gov/Archives/edgar/data/100122/0000100122-97-000004.txt)\nRestated Articles of Incorporation of TEP, filed with the ACC on August 11, 1994, as amended by Amendment to Article Fourth of our Restated Articles of Incorporation, filed with the ACC on May 17, 1996. (Form 10-K for the year ended December 31, 1996, File No. 1-05924 - Exhibit No 3(a)).\n\n[3(a)(1)](https://www.sec.gov/Archives/edgar/data/100122/000095012311020431/c12971exv3wa.htm)\nTEP Articles of Amendment filed with the ACC on September 3, 2009 (Form 10-K for the year ended December 31, 2010, File No. 1-05924 - Exhibit 3(a)).\n\n[3(b)](https://www.sec.gov/Archives/edgar/data/100122/000010012215000029/tepex39302015.htm)\nBylaws of TEP, as amended as of August 12, 2015 (Form 10-Q for the quarter ended September 30, 2015, File No. 1-05924 - Exhibit 3).\n\n[3(c)](https://www.sec.gov/Archives/edgar/data/100122/000010012215000021/ex32unsgoldensharestmt.htm)\nAmendment to Articles of Incorporation of UNS Energy Corporation, creating series of Limited Voting Junior Preferred Stock (Form 8-K dated August 12, 2015, File No. 1-05924 - Exhibit 3.2).\n\n[4(a)(1)](https://www.sec.gov/Archives/edgar/data/100122/000119312511302204/d251992dex41.htm)\nIndenture, dated November 1, 2011, between Tucson Electric Power Company and U.S. Bank Trust Company, National Association (as successor to U.S. Bank National Association), as trustee, authorizing unsecured Notes (Form 8-K dated November 8, 2011, File 1-05924 - Exhibit 4.1).\n\n[4(a)(2)](https://www.sec.gov/Archives/edgar/data/100122/000119312522142287/d230932dex4c2.htm)\nFirst Supplemental Indenture, dated as of May 1, 2022, between Tucson Electric Power Company and U.S. Bank Trust Company, National Association (as successor to U.S. Bank National Association), as trustee, authorizing unsecured Notes (Form S-3 dated May 5, 2022, File No. 333-264708 - Exhibit 4(c)(2)).\n\n[4(a)(3)](https://www.sec.gov/Archives/edgar/data/100122/000094113814000071/exhibit41.htm)\nOfficer's Certificate, dated March 10, 2014, establishing the terms of the 5.00% Senior Notes due 2044 (Form 8-K dated March 10, 2014, File No. 1-05924 - Exhibit 4.1).\n\n[4(a)(4)](https://www.sec.gov/Archives/edgar/data/100122/000010012219000004/tepex4g612312018.htm)\nOfficer's Certificate, dated November 29, 2018, establishing the terms of the 4.85% Senior Notes due 2048 (Form 10-K for the year ended December 31, 2018, File No. 1-05924 - Exhibit 4(g)(6)).\n\n[4(a)(5)](https://www.sec.gov/Archives/edgar/data/100122/000010012220000010/exapr20notes41cert.htm)\nOfficer's Certificate, dated April 9, 2020, establishing the terms of the 4.00% Senior Notes due 2050 (Form 8-K dated April 9, 2020, File No. 1-05924 - Exhibit 4.1).\n\n[4(a)(6)](https://www.sec.gov/Archives/edgar/data/100122/000010012220000026/exaug20notes41cert.htm)\nOfficer's Certificate, dated August 10, 2020, establishing the terms of the 1.50% Senior Notes due 2030 (Form 8-K dated August 10, 2020, File No. 1-05924 - Exhibit 4.1).\n\n[4(a)(7)](https://www.sec.gov/Archives/edgar/data/100122/000010012221000010/exmay21notes41.htm)\nOfficer's Certificate, dated May 11, 2021, establishing the terms of the 3.25% Senior Notes due 2051 (Form 8-K dated May 11, 2021, File No. 1-05924 - Exhibit 4.1).\n\n[4(a)(8)](https://www.sec.gov/Archives/edgar/data/100122/000010012222000007/exfeb22notes41.htm)\nOfficer's Certificate, dated February 17, 2022, establishing the terms of the 3.25% Senior Notes due 2032 (Form 8-K dated February 17, 2022, File No. 1-05924 - Exhibit 4.1).\n\n[4(a)(9)](https://www.sec.gov/Archives/edgar/data/100122/000010012223000008/exfeb23notes41.htm)\nOfficer’s Certificate, dated February 16, 2023, establishing the terms of the 5.50% Senior Notes due 2053 (Form 8-K dated February 16, 2023, File No. 1-05924 – Exhibit 4.1).\n\n[4(a)(10)](https://www.sec.gov/Archives/edgar/data/100122/000119312524197596/d881890dex41.htm)\nOfficer’s Certificate, dated August 9, 2024, establishing the terms of the 5.20% Senior Notes due 2034 (Form 8-K dated August 9, 2024, File No. 1-05924 – Exhibit 4.1).\n\n[4(a)(11)](https://www.sec.gov/Archives/edgar/data/100122/000010012225000007/exfeb25notes41.htm)\nOfficer’s Certificate, dated February 21, 2025, establishing the terms of the 5.90% Senior Notes due 2055 (Form 8-K dated February 21, 2025, File No. 1-05924 – Exhibit 4.1).\n\n[4(b)(1)](https://www.sec.gov/Archives/edgar/data/100122/000010012221000017/exoct21creditagreement41.htm)\nAmended and Restated Credit Agreement, dated as of October 15, 2021, among Tucson Electric Power Company, MUFG Union Bank, N.A. as Administrative Agent, and a group of lenders (Form 8-K dated October 15, 2021, File No. 1-05924 - Exhibit 4.1).\n\n[4(b)(2)](https://www.sec.gov/Archives/edgar/data/100122/000010012223000018/tepex4106302023.htm)\nAmendment No. 1 to Amended and Restated Credit Agreement, dated as of June 8, 2023, by and among Tucson Electric Power Company, as Borrower, the Lenders party thereto and MUFG Bank, Ltd. (as successor by assignment from MUFG Union Bank, N.A.), as Administrative Agent (Form 10-Q for the quarter ended June 30, 2023, File No. 1-50924 - Exhibit 4.1).\n\n*[23](tepex2312312025.htm)\nConsent of Deloitte & Touche LLP, Independent Registered Public Accounting Firm.\n\n85\n\n[Table of Contents](#iaa4bfb93949147c689d89e1563a40f0a_7)\n\n*[24](tepex2412312025.htm)\nPower of Attorney.\n\n*[31(a)](tepex31a12312025.htm)\nCertification Pursuant to Section 302 of the Sarbanes-Oxley Act, by Susan M. Gray.\n\n*[31(b)](tepex31b12312025.htm)\nCertification Pursuant to Section 302 of the Sarbanes-Oxley Act, by J. Caleb Adcock.\n\n[**32](tepex3212312025.htm)\nStatements of Corporate Officers (pursuant to Section 906 of the Sarbanes-Oxley Act of 2002).\n\n101.INSXBRL Instance Document.\n\n101.SCHXBRL Taxonomy Extension Schema Document.\n\n101.CALXBRL Taxonomy Extension Calculation Linkbase Document.\n\n101.LABXBRL Taxonomy Extension Label Linkbase Document.\n\n101.PREXBRL Taxonomy Extension Presentation Linkbase Document.\n\n101.DEFXBRL Taxonomy Extension Definition Linkbase Document.\n\n104\nThe cover page from the Company's Annual Report on Form 10-K for the year ended December 31, 2025, formatted in Inline XBRL and contained in Exhibit 101.\n\n*Filed herewith.\n\n**Pursuant to Item 601(b)(32)(ii) of Regulation S-K, this certificate is not being “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.\n\n86\n\nSIGNATURES\n\nPursuant to the requirements of section 13 or 15(b) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.\n\nTUCSON ELECTRIC POWER COMPANY\n\n(Registrant)\n\nDate: February 11, 2026/s/ J. Caleb Adcock\n\nJ. Caleb Adcock\n\nChief Financial Officer, Sr. Vice President, and Director\n\n(Principal Financial Officer and Principal Accounting Officer)\n\nPursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.\n\nDate: February 11, 2026*\n\nSusan M. Gray\n\nChief Executive Officer and Director\n\n(Principal Executive Officer)\n\nDate:February 11, 2026*\n\nAmy J. Welander\n\nDirector\n\n*By:/s/ J. Caleb Adcock\n\nJ. Caleb Adcock\n\nAttorney-in-fact\n\n87"}