TUCSON ELECTRIC POWER CO Contracts & Agreements

Officer's Certificate, dated February 16, 2023, establishing the terms of the Notes (Filed With SEC on February 16, 2023)

Officer's Certificate, dated February 17, 2022, establishing the terms of the Notes (Filed With SEC on February 17, 2022)

Officer's Certificate, dated May 11, 2021, establishing the terms of the Notes (Filed With SEC on May 11, 2021)

Officer's Certificate, dated August 10, 2020, establishing the terms of the Notes (Filed With SEC on August 10, 2020)

Officer's Certificate, dated April 9, 2020, establishing the terms of the Notes (Filed With SEC on April 9, 2020)

Credit Agreement, dated as of December 11, 2019, among Tucson Electric Power Company, Truist Bank, as administrative agent, and a group of lenders (Filed With SEC on December 13, 2019)

Officer's Certificate, dated November 29, 2018, authorizing 4.85% Senior Notes due 2048 (Filed With SEC on February 15, 2019)

Form of Officers Certificate establishing the terms of the Senior Notes (Filed With SEC on November 8, 2018)

FIRST AMENDMENT TO AGREEMENT FOR SETTLEMENT OF CLAIMS INCLUDING RELEASES AND PURCHASE AND SALE OF BENEFICIAL INTERESTS among ALTERNA SPRINGERVILLE LLC and LDVF1 TEP LLC as... (Filed With SEC on August 30, 2016)

UNS ENERGY CORPORATION OFFICER CHANGE IN CONTROL AGREEMENT (Filed With SEC on February 18, 2016)

Schedule of Officers who are Covered by UNS Energy Corporation Officer Change in Control Agreement or Substantially Identical Agreements (Filed With SEC on February 18, 2016)

CREDIT AGREEMENT dated as of October 15, 2015 among TUCSON ELECTRIC POWER COMPANY, as Borrower, THE LENDERS PARTY HERETO, JPMORGAN CHASE BANK, N.A., SUNTRUST BANK and WELLS FARGO... (Filed With SEC on October 16, 2015)

TUCSON ELECTRIC POWER COMPANY OFFICERS CERTIFICATE (Filed With SEC on March 4, 2015)

TUCSON ELECTRIC POWER COMPANY (an Arizona corporation) 3.05% Senior Notes due 2025 REGISTRATION RIGHTS AGREEMENT (Filed With SEC on March 4, 2015)

UNS ENERGY CORPORATION 2015 SHARE UNIT PLAN Effective as of January 1, 2015 ARTICLE 1 PREAMBLE AND DEFINITIONS (Filed With SEC on February 23, 2015)

CREDIT AGREEMENT dated as of December 2, 2014 among TUCSON ELECTRIC POWER COMPANY, as Borrower, THE LENDERS PARTY HERETO, U.S. BANK NATIONAL ASSOCIATION, WELLS FARGO BANK,... (Filed With SEC on December 3, 2014)

88 East Broadway Boulevard, Tucson, Arizona 85701 Post Office Box 711, Tucson, Arizona 85702 November 13, 2014 (Filed With SEC on November 17, 2014)

FIRST AMENDMENT TO THE AGREEMENT AND PLAN OF MERGER (Filed With SEC on August 15, 2014)

TUCSON ELECTRIC POWER COMPANY OFFICERS CERTIFICATE (Filed With SEC on March 10, 2014)

FIRST AMENDMENT TO ASSET PURCHASE AND SALE AGREEMENT (Filed With SEC on February 25, 2014)

AMENDMENT NO. 1 (Filed With SEC on February 25, 2014)

UNS ENERGY CORPORATION OFFICER CHANGE IN CONTROL AGREEMENT (Filed With SEC on February 25, 2014)

ASSET PURCHASE AND SALE AGREEMENT between GILA RIVER POWER LLC (Seller) and TUCSON ELECTRIC POWER COMPANY and UNS ELECTRIC, INC. (collectively, Buyers) Dated as of December 23,... (Filed With SEC on December 27, 2013)

LENDER RATE MODE COVENANTS AGREEMENT (Filed With SEC on November 14, 2013)

INDENTURE OF TRUST (2013 Series A) BETWEEN THE INDUSTRIAL DEVELOPMENT AUTHORITY OF THE COUNTY OF PIMA AND U.S. BANK TRUST NATIONAL ASSOCIATION Dated as of March 1, 2013... (Filed With SEC on March 14, 2013)

LOAN AGREEMENT (2013 Series A) between THE INDUSTRIAL DEVELOPMENT AUTHORITY OF THE COUNTY OF PIMA and TUCSON ELECTRIC POWER COMPANY Dated as of March 1, 2013 Relating To... (Filed With SEC on March 14, 2013)

TUCSON ELECTRIC POWER COMPANY OFFICERS CERTIFICATE (Filed With SEC on September 14, 2012)

INDENTURE OF TRUST (2012 Series A) BETWEEN THE INDUSTRIAL DEVELOPMENT AUTHORITY OF THE COUNTY OF PIMA AND U.S. BANK TRUST NATIONAL ASSOCIATION Dated as of June 1, 2012 Authorizing... (Filed With SEC on June 21, 2012)

LOAN AGREEMENT (2012 Series A) between THE INDUSTRIAL DEVELOPMENT AUTHORITY OF THE COUNTY OF PIMA and TUCSON ELECTRIC POWER COMPANY Dated as of June 1, 2012 Relating To Industrial... (Filed With SEC on June 21, 2012)

INDENTURE OF TRUST (2012 Series A) BETWEEN THE INDUSTRIAL DEVELOPMENT AUTHORITY OF THE COUNTY OF APACHE AND U.S. BANK TRUST NATIONAL ASSOCIATION Dated as of March 1, 2012... (Filed With SEC on March 21, 2012)

LOAN AGREEMENT (2012 Series A) between THE INDUSTRIAL DEVELOPMENT AUTHORITY OF THE COUNTY OF APACHE and TUCSON ELECTRIC POWER COMPANY Dated as of March 1, 2012 Relating To... (Filed With SEC on March 21, 2012)

THIRD SUPPLEMENTAL INDENTURE OF TRUST (Filed With SEC on February 28, 2012)

Supplemental Indenture No. 13 TUCSON ELECTRIC POWER COMPANY to THE BANK OF NEW YORK MELLON, Trustee Dated as of November 1, 2011 Supplemental to Indenture of Mortgage and Deed of... (Filed With SEC on February 28, 2012)

AMENDMENT NO. 1 TO CREDIT AGREEMENT (Filed With SEC on February 28, 2012)

TUCSON ELECTRIC POWER COMPANY TO U.S. BANK NATIONAL ASSOCIATION, Trustee Indenture (For Unsecured Debt Securities) Dated as of November 1, 2011 TUCSON ELECTRIC POWER COMPANY... (Filed With SEC on November 8, 2011)

TUCSON ELECTRIC POWER COMPANY OFFICERS CERTIFICATE (Filed With SEC on November 8, 2011)

UNISOURCE ENERGY CORPORATION 2011 Omnibus Stock and Incentive Plan (Filed With SEC on May 11, 2011)

INDENTURE OF TRUST (2009 SERIES A) BETWEEN THE INDUSTRIAL DEVELOPMENT AUTHORITY OF THE COUNTY OF PIMA AND U.S. BANK TRUST NATIONAL ASSOCIATION DATED AS OF OCTOBER 1, 2009... (Filed With SEC on October 13, 2009)

LOAN AGREEMENT (2009 SERIES A) BETWEEN THE INDUSTRIAL DEVELOPMENT AUTHORITY OF THE COUNTY OF PIMA AND TUCSON ELECTRIC POWER COMPANY DATED AS OF OCTOBER 1, 2009 RELATING TO... (Filed With SEC on October 13, 2009)

INDENTURE OF TRUST (Filed With SEC on October 13, 2009)

LOAN AGREEMENT between COCONINO COUNTY, ARIZONA POLLUTION CONTROL CORPORATION and TUCSON ELECTRIC POWER COMPANY Dated as of October 1, 2009 Relating To Pollution Control Revenue... (Filed With SEC on October 13, 2009)

Amended and Restated Officer Change in Control Agreement (Filed With SEC on October 13, 2009)

UNISOURCE ENERGY CORPORATION OFFICER CHANGE IN CONTROL AGREEMENT (Filed With SEC on October 13, 2009)

CREDIT AGREEMENT Dated as of March 26, 2009 among UNISOURCE ENERGY DEVELOPMENT COMPANY, as the Company and THE BANKS NAMED HEREIN AND FROM TIME TO TIME PARTIES HERETO, as the Banks (Filed With SEC on April 1, 2009)

GUARANTY AGREEMENT (Filed With SEC on April 1, 2009)

Exhibit 4(i) (Filed With SEC on March 2, 2009)

Exhibit 4(r) (Filed With SEC on March 2, 2009)

Exhibit 4(w) (Filed With SEC on March 2, 2009)

Exhibit 4(x) (Filed With SEC on March 2, 2009)

Exhibit 4(y) (Filed With SEC on March 2, 2009)

Note Purchase and Guaranty Agreement, dated August 5, 2008, among UNS Electric, Inc (Filed With SEC on August 11, 2008)

Letter of Credit and Reimbursement Agreement (Filed With SEC on July 1, 2008)

Supplemental Indenture No. 8 (Filed With SEC on July 1, 2008)

Indenture of Trust (Filed With SEC on July 1, 2008)

Loan Agreement (Filed With SEC on July 1, 2008)

Indenture of Trust (Filed With SEC on March 24, 2008)

Loan Agreement (Filed With SEC on March 24, 2008)

Stock Option Agreement between UniSource Energy and Raymond S. Heyman dated as of September 15, 2005 (Filed With SEC on February 29, 2008)

Supplemental Indenture No. 7, dated as of December 1, 2006, between Tucson Electric Power Company and The Bank of New York, as trustee (Filed With SEC on December 22, 2006)

Employment Agreement, dated December 22, 2006, between Tucson Electric Power Company and Dennis R. Nelson (Filed With SEC on December 22, 2006)

Amended and Restated Credit Agreement, dated as of August 11, 2006, among UniSource Energy Corporation, Union Bank of California, N.A., as Administrative Agent, and a group of... (Filed With SEC on August 15, 2006)

Amended and Restated Pledge Agreement dated, as of August 11, 2006, between UniSource Energy Corporation and Union Bank of California, N.A., as Administrative Agent (Filed With SEC on August 15, 2006)

Amended and Restated Credit Agreement, dated as of August 11, 2006, among Tucson Electric Power Company, Union Bank of California, N.A., as Administrative Agent, and a group of... (Filed With SEC on August 15, 2006)

Amended and Restated Credit Agreement, dated as of August 11, 2006, among UNS Electric, Inc., UNS Gas, Inc., UniSource Energy Services, Inc., Union Bank of California, N.A., as... (Filed With SEC on August 15, 2006)

Amendment No. 1, dated as of June 1, 2006, to Amended and Restated Lease Agreement, dated as of December 15, 1986, as amended and restated as of December 15, 1992, between... (Filed With SEC on June 27, 2006)

AMENDMENT NO. 4 to LEASE AGREEMENT (Filed With SEC on June 12, 2006)

AMENDMENT NO. 4 dated as of June 1, 2006 to TAX INDEMNITY AGREEMENT dated as of December 1, 1985 between PHILIP MORRIS CAPITAL CORPORATION beneficiary under a Trust Agreement... (Filed With SEC on June 12, 2006)

AMENDMENT NO. 4 dated as of June 1, 2006 to TAX INDEMNITY AGREEMENT dated as of December 1, 1985 between SELCO SERVICE CORPORATION (as successor to IBM Credit LLC) beneficiary... (Filed With SEC on June 12, 2006)

AMENDMENT NO. 4 dated as of June 1, 2006 to TAX INDEMNITY AGREEMENT dated as of December 1, 1985 between EMERSON FINANCE LLC (formerly known as Emerson Finance Co.) beneficiary... (Filed With SEC on June 12, 2006)