# EDGAR Filing Document

**Accession Number:** 0000100122
**File Stem:** 0000100122-23-000008
**Filing Date:** 2023-2
**Character Count:** 46130
**Document Hash:** 9f120b35db49de4d481cd09711cbd551
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000100122-23-000008.hdr.sgml**: 20230216

**ACCESSION NUMBER**: 0000100122-23-000008

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 15

**CONFORMED PERIOD OF REPORT**: 20230216

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20230216

**DATE AS OF CHANGE**: 20230216

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TUCSON ELECTRIC POWER CO
- **CENTRAL INDEX KEY:** 0000100122
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **IRS NUMBER:** 860062700
- **STATE OF INCORPORATION:** AZ
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-05924
- **FILM NUMBER:** 23637605

**BUSINESS ADDRESS:**
- **STREET 1:** 88 EAST BROADWAY
- **CITY:** TUCSON
- **STATE:** AZ
- **ZIP:** 85701
- **BUSINESS PHONE:** 520-917-2644

**MAIL ADDRESS:**
- **STREET 1:** 88 EAST BROADWAY BLVD
- **STREET 2:** HQE809
- **CITY:** TUCSON
- **STATE:** AZ
- **ZIP:** 85701

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TUCSON GAS & ELECTRIC CO /AZ/
- **DATE OF NAME CHANGE:** 19790528

?xml version="1.0" ? tep-20230216

**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 and Exchange Act of 1934**

Date of Report (Date of earliest event reported): **February 16, 2023**

**Commission File Number 1-5924** 

**TUCSON ELECTRIC POWER COMPANY**

(Exact name of registrant as specified in its charter)

---

| | |
|:---|:---|
| **Arizona** | **86-0062700** |
| (State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.) |

---

**88 East Broadway Boulevard, Tucson, AZ 85701** 

(Address of principal executive offices)(Zip Code)

Registrant's telephone number, including area code: **(520) 571-4000** 

Former name, former address and former fiscal year, if changed since last report: **N/A**

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:

☐ 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))

Securities registered pursuant to Section 12(b) of the Act: **None**

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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. ☐

------

**<u>Item 8.01 Other Events.</u>**

On February 16, 2023, Tucson Electric Power Company issued and sold $375 million aggregate principal amount of 5.50% Senior Notes due 2053 (the Notes). The Notes were registered under the Securities Act of 1933, as amended, pursuant to Registration Statement No. 333-264708.

This Current Report on Form 8-K is being filed to report as exhibits certain documents in connection with the issuance and sale of the Notes.

**<u>Item 9.01 Financial Statements and Exhibits.</u>**

(d) Exhibits.

---

| | |
|:---|:---|
| **Exhibit** | **Description** |
| <u>[4.1](exfeb23notes41.htm)</u> | Officer's Certificate, dated February 16, 2023, establishing the terms of the Notes |
| <u>[5.1](exfeb23notes51.htm)</u> | Opinion of Amy J. Welander, Esq., regarding the validity of the Notes |
| <u>[5.2](exfeb23notes52.htm)</u> | Opinion of Morgan, Lewis & Bockius LLP, regarding the validity of the Notes |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

------

---

| | |
|:---|:---|
| **SIGNATURES** | **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 thereunto duly authorized. | 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 thereunto duly authorized. |
|  | TUCSON ELECTRIC POWER COMPANY |
|  | (Registrant) |
| Date: February 16, 2023 | /s/ Frank P. Marino |
|  | Frank P. Marino |
|  | Sr. Vice President, Chief Financial Officer, and Director |
|  | (On behalf of the registrant and as Principal Financial Officer) |

---

## Exhibit 4.1

**Exhibit 4.1**

**TUCSON ELECTRIC POWER COMPANY**

**OFFICER'S CERTIFICATE**

Martha B. Pritz, the Treasurer of Tucson Electric Power Company, an Arizona corporation (the "**Company**"), pursuant to the authority granted in the Board Resolutions of the Company dated February 10, 2023, and Sections 102, 201 and 301 of the Indenture defined herein, does hereby certify to U.S. Bank Trust Company, National Association (as successor to U.S. Bank National Association), as trustee (the "**Trustee**") under the Indenture (For Unsecured Debt Securities) of the Company dated as of November 1, 2011 (as amended and supplemented, the "**Indenture**") that:

1. The Securities of the tenth series to be issued under the Indenture shall be designated "5.50% Senior Notes due 2053" (the "**Notes**"). All capitalized terms used in this certificate which are not defined herein shall have the meanings set forth in Exhibit A hereto; all capitalized terms used in this certificate which are not defined herein or in Exhibit A hereto shall have the meanings set forth in the Indenture.

2. The Notes shall be issued by the Company in the initial aggregate principal amount of $375,000,000. As contemplated by the last paragraph of Section 301 of the Indenture, additional Notes, without limitation as to amount, having the same terms as the Outstanding Notes (except a different issue date and bearing interest from the last Interest Payment Date to which interest has been paid or duly provided for on the Outstanding Notes, and, if no interest has been paid, from February 16, 2023), may also be issued by the Company pursuant to the Indenture without the consent of the existing Holders of the Notes. Such additional Notes shall be part of the same series as the Outstanding Notes.

3. The Notes shall mature and the principal thereof shall be due and payable together with all accrued and unpaid interest thereon on April 15, 2053.

4. The Notes shall bear interest as provided in the form thereof set forth in Exhibit A hereto.

5. The principal of and premium, if any, and each installment of interest on the Notes shall be payable upon presentation of the Notes at the office or agency of the Company in the City of New York; provided that payment of principal, premium, if any, and each installment of interest may be made at the option of the Company by check mailed to the address of the persons entitled thereto or by wire transfer to an account designated by the person entitled thereto; and provided further that after payment of the Notes in full, the Holders thereof shall promptly surrender such Notes at the office or agency of the Company in the City of New York. Notices and demands to or upon the Company in respect of the Notes and the Indenture may be served at the office or agency of the Company in the City of New York. The Corporate Trust Office of the Trustee will initially be the agency of the Company for such payment and service of notices and demands and the Company hereby appoints U.S. Bank Trust Company, National Association as its agent for all such purposes; provided, however, that the Company reserves the right to change, by one or more Officer's Certificates, any such office or agency and such agent. The registration and registration of transfers and exchanges in respect of the Notes may be effected at the Corporate Trust Office of the Trustee. The Trustee will initially be the Security Registrar and the Paying Agent for the Notes.

6. The Notes will be redeemable at the option of the Company prior to the Stated Maturity of the principal thereof on not less than 10 nor more than 60 days' notice prior to the date fixed for redemption as provided in the form thereof set forth in Exhibit A hereto.

------

7. No service charge shall be made for the registration of transfer or exchange of the Notes; provided, however, that the Company may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with the exchange or transfer.

8. If the Company shall make any deposit of money and/or Eligible Obligations with respect to any Notes, or any portion of the principal amount thereof, as contemplated by Section 701 of the Indenture, the Company shall not deliver an Officer's Certificate described in clause (z) in the first paragraph of said Section 701 unless the Company shall also deliver to the Trustee, together with such Officer's Certificate, either:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(A)an instrument wherein the Company, notwithstanding the satisfaction and discharge of its indebtedness in respect of the Notes, shall assume the obligation (which shall be absolute and unconditional) to irrevocably deposit with the Trustee or Paying Agent such additional sums of money, if any, or additional Eligible Obligations (meeting the requirements of Section 701), if any, or any combination thereof, at such time or times, as shall be necessary, together with the money and/or Eligible Obligations theretofore so deposited, to pay when due the principal of and premium, if any, and interest due and to become due on such Notes or portions thereof, all in accordance with and subject to the provisions of said Section 701; provided, however, that such instrument may state that the obligation of the Company to make additional deposits as aforesaid shall be subject to the delivery to the Company by the Trustee of a notice asserting the deficiency accompanied by an opinion of an independent public accountant of nationally recognized standing, selected by the Trustee, showing the calculation thereof; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(B)an Opinion of Counsel to the effect that, as a result of a change in law occurring after the date of this certificate, the Holders of such Notes, or portions of the principal amount thereof, will not recognize income, gain or loss for United States federal income tax purposes as a result of the satisfaction and discharge of the Company's indebtedness in respect thereof and will be subject to United States federal income tax on the same amounts, at the same times and in the same manner as if such satisfaction and discharge had not been effected.

9. The Eligible Obligations with respect to the Notes will be Government Obligations.

10. The Notes will be Benefitted Securities and shall have the benefit of the covenant contained in Section 605 of the Indenture.

11. The Notes shall have such other terms and provisions as are provided in the form thereof set forth in Exhibit A hereto, and shall be issued in substantially such form.

12. The Notes will be initially issued in global form registered in the name of Cede & Co., as registered owner and as nominee for DTC, the initial securities depository for the Notes; provided, that the Company reserves the right to provide for another depository, registered as a clearing agency under the Securities Exchange Act of 1934, as amended (the "**Exchange Act**"), to act as depository for the global Notes (DTC and any such successor depository, the "**Depository**"); beneficial interests in Notes issued in global form may not be exchanged in whole or in part for individual certificated Notes in definitive form, and no transfer of a global Note in whole or in part may be registered in the name of any Person other than the Depository or its nominee except that (i) if the Depository (A) has notified the Company that it is unwilling or unable to continue as depository for the global Notes or (B) has ceased to be a clearing agency registered under the Exchange Act or other applicable statute or regulation and, in either case, a successor

------

depository for such global Notes has not been appointed by the Company within 90 days after the Company receives such notice or becomes aware of such ineligibility, (ii) if the Company, in its sole discretion, determines that the Notes will no longer be represented by Notes in global form or (iii) if an Event of Default with respect to the Notes has occurred and is continuing, the Company will execute, and the Trustee, upon receipt of a Company Order for the authentication and delivery of definitive Notes, will authenticate and deliver Notes in definitive certificated form in an aggregate principal amount equal to the principal amount of the global Notes representing such Notes in exchange for such global Notes, such definitive Notes to be registered in the names provided by the Depository to the Trustee; each global Note (i) shall represent and shall be denominated in an amount equal to the aggregate principal amount of the Outstanding Notes to be represented by such global Note, (ii) shall be registered in the name of the Depository or its nominee, (iii) shall be delivered by the Trustee to the Depository, its nominee, any custodian for the Depository or otherwise pursuant to the Depository's instructions and (iv) shall bear a legend restricting the transfer of such global Note to any person other than the Depository or its nominee; none of the Company, the Trustee, any Paying Agent or any Authenticating Agent will have any responsibility or liability for any aspect of the records relating to, payments made on account of, or transfers in respect of, beneficial ownership interests in a global Note (all of which will be conducted pursuant to the customary procedures of the Depository) or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests.

13.&nbsp;&nbsp;&nbsp;&nbsp;The undersigned has read all of the covenants and conditions contained in the Indenture, and the definitions in the Indenture relating thereto, relating to the issuance, authentication and delivery of the Notes and in respect of compliance with which this certificate is made;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)The statements contained in this certificate are based upon the familiarity of the undersigned with the Indenture, the documents accompanying this certificate, and upon discussions by the undersigned with officers and employees of the Company familiar with the matters set forth herein;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)In the opinion of the undersigned, she has made such examination or investigation as is necessary to enable her to express an informed opinion as to whether or not such covenants and conditions have been complied with; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)In the opinion of the undersigned, such conditions and covenants and conditions precedent provided for in the Indenture (including any covenants compliance with which constitutes a condition precedent) relating to the authentication and delivery of the Notes requested in the accompanying Company Order No. 11, have been complied with.

------

IN WITNESS WHEREOF, I have executed this Officer's Certificate this 16<sup>th</sup> day of February, 2023.

<u>/s/ Martha B. Pritz&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u><br> Martha B. Pritz<br>Treasurer

------

EXHIBIT A

[Unless this certificate is presented by an authorized representative of The Depository Trust Company, a limited-purpose trust company organized under the New York Banking Law ("**DTC**"), to Tucson Electric Power Company or its agent for registration of transfer, exchange, or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.]

---

| | |
|:---|:---|
| **No. R-** | **CUSIP: 898813 AV2** |

---

**[FORM OF FACE OF NOTE]**

**TUCSON ELECTRIC POWER COMPANY**

**5.50% SENIOR NOTE DUE 2053**

Tucson Electric Power Company, a corporation duly organized and existing under the laws of the State of Arizona (herein referred to as the "**Company**," which term includes any successor Person under the Indenture hereinafter referred to), for value received, hereby promises to pay to _____________________, or registered assigns, the principal sum of ___________________________ Dollars ($_____________) on April 15, 2053, and to pay interest on said principal sum semi-annually on April 15 and October 15 of each year commencing October 15, 2023 (each an Interest Payment Date) at the rate of 5.50% per annum, until the principal hereof is paid or made available for payment and to pay interest on any overdue principal and, to the extent permitted by law, interest, at the rate then borne by the Securities of this series. Interest on the Securities of this series will accrue from, and include, February 16, 2023, to the first Interest Payment Date, and thereafter will accrue from the last Interest Payment Date to which interest has been paid or duly provided for. In the event that any Interest Payment Date is not a Business Day, then payment of interest payable on such date will be made on the next succeeding day which is a Business Day (and without any interest or other payment in respect of such delay) with the same force and effect, and in the same amount, as if made on the Interest Payment Date. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest, which shall be the close of business on (i) the Business Day next preceding such Interest Payment Date so long as the Securities are held by a securities depository in book-entry form, or (ii) if the Securities are not held by a securities depository in book-entry form, the 15th calendar day next preceding such Interest Payment Date, provided, however, that interest payable at Maturity will be paid to the Person to whom principal is paid. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Securities of this series not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the

------

Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in the Indenture.

Payment of the principal of and premium, if any, and interest on this Security will be made upon presentation at the office or agency of the Company maintained for that purpose in the City of New York, the State of New York in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts, provided, however, that, at the option of the Company, the principal of and premium, if any, and interest on this Security may be paid by check mailed to the address of the person entitled thereto, as such address shall appear on the Security Register or by wire transfer to an account designated by the person entitled thereto; and provided, further, that, after payment in full of this Security the Holder shall promptly surrender this Security at the office or agency of the Company in the City of New York, the State of New York.

Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. Any capitalized term which is used herein and not otherwise defined shall have the meaning ascribed to such term in the Indenture.

Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

------

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed.

TUCSON ELECTRIC POWER COMPANY<br>By: <u>&nbsp;&nbsp;&nbsp;&nbsp;</u>

**[FORM OF CERTIFICATE OF AUTHENTICATION]**

**CERTIFICATE OF AUTHENTICATION** 

This is one of the Securities of the series designated therein referred to in the within-mentioned Indenture.

Dated:

U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION,

as Trustee

By:&nbsp;&nbsp;&nbsp;&nbsp;<u>&nbsp;&nbsp;&nbsp;&nbsp;</u><br>Authorized Signatory

------

**[FORM OF REVERSE OF NOTE]**

**General.**

**&nbsp;&nbsp;&nbsp;&nbsp;**

&nbsp;&nbsp;&nbsp;&nbsp;This Security is one of a duly authorized issue of securities of the Company (herein called the "**Securities**"), issued and to be issued in one or more series under an Indenture (For Unsecured Debt Securities), dated as of November 1, 2011 (herein, together with any amendments and supplements thereto, called the "**Indenture**," which term shall have the meaning assigned to it in such instrument), between the Company and U.S. Bank Trust Company, National Association (successor to U.S. Bank National Association), as Trustee (herein called the "**Trustee**," which term includes any successor trustee under the Indenture), and reference is hereby made to the Indenture, including the Board Resolutions and Officer's Certificate filed with the Trustee on February 16, 2023 creating the series designated on the face hereof, for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered.

**Optional Redemption.**

Prior to October 15, 2052 (six months prior to their Stated Maturity) (the "**Par Call Date**"), the Securities of this series will be redeemable at the option of the Company, in whole or in part, on not less than 10 nor more than 60 days' notice prior to the date fixed for redemption (each a "**Redemption Date**"), at any time and from time to time, at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) (a "**Redemption Price**") equal to the greater of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) (a) the sum of the present values of the remaining scheduled payments of principal of the Securities of this series to be redeemed and interest thereon discounted to the Redemption Date (assuming the Securities of this series matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 30 basis points less (b) interest accrued to the Redemption Date, and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) 100% of the principal amount of the Securities of this series being redeemed,

plus, in either case, accrued and unpaid interest on the Securities of this series being redeemed to the Redemption Date.

On or after the Par Call Date, the Securities of this series will be redeemable at the option of the Company, in whole or in part, on not less than 10 nor more than 60 days' notice prior to the date fixed for redemption, at any time and from time to time, at a Redemption Price equal to 100% of the principal amount of the Securities of this series being redeemed plus accrued and unpaid interest thereon to the Redemption Date.

"**Treasury Rate**" means, with respect to any Redemption Date, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate shall be determined by the Company after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third Business Day preceding the Redemption Date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as "Selected Interest Rates (Daily) - H.15" (or any successor designation or publication) ("**H.15**") under the caption "U.S.

------

government securities–Treasury constant maturities–Nominal" (or any successor caption or heading). In determining the Treasury Rate, the Company shall select, as applicable:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the Redemption Date to the Par Call Date (the "**Remaining Life**"); or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields – one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life – and shall interpolate to the Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life.

For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the Redemption Date.

If on the third Business Day preceding the Redemption Date H.15 is no longer published, or, if published, no longer contains the yields for Treasury constant maturities, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the second Business Day preceding such Redemption Date as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the Company shall select (a) the United States Treasury security maturing on the Par Call Date, subject to clause (3) below, or (b) if there is no United States Treasury security maturing on the Par Call Date, then the United States Treasury security with the maturity date that is closest to the Par Call Date, subject to clauses (2) and (3) below, as applicable; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) if there is no United States Treasury security described in clause (1), but there are two or more United States Treasury securities with maturity dates equally distant from the Par Call Date, one or more with maturity dates preceding the Par Call Date and one or more with maturity dates following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding and closest to the Par Call Date, subject to clause (3) below; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) if there are two or more United States Treasury securities meeting the criteria of the preceding clauses (1) or (2), the Company shall select from among those two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time.

In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices of such United States Treasury security (expressed as a percentage of principal amount and rounded to three decimal places) at 11:00 a.m., New York City time.

------

The Company shall deliver to the Trustee before any Redemption Date for the Securities of this series its calculation of the Redemption Price applicable to such redemption. The Company's actions and determinations in determining the Redemption Price shall be conclusive and binding for all purposes, absent manifest error. The Trustee shall be under no duty to inquire into, may presume the correctness of, and shall be fully protected in acting upon the Company's calculation of any Redemption Price of the Securities of this series.

In lieu of stating the Redemption Price, notices of redemption of the Securities of this series pursuant to the first paragraph under "Optional Redemption" shall state substantially the following: "The Redemption Price of the Securities of this series to be redeemed shall equal the greater of (i) (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the Redemption Date (assuming the Securities of this series matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 30 basis points less (b) interest accrued to the Redemption Date and (ii) 100% of the principal amount of the Securities of this series being redeemed plus, in either case, accrued and unpaid interest on the Securities of this series being redeemed to the Redemption Date."

If less than all of the Securities of this series are to be redeemed consistent with the terms hereof, the particular Securities to be redeemed shall be selected by the Trustee from the Outstanding Securities of such series in a manner it deems fair and appropriate.

If at the time notice of redemption is given, the redemption moneys are not on deposit with the Trustee, then the redemption shall be subject to their receipt on or before the Redemption Date and such notice shall be of no effect unless such moneys are received.

On and after the Redemption Date, interest will cease to accrue on the Securities of this series or portions thereof called for redemption; provided that payment of the Redemption Price shall have been made on or before the Redemption Date.

The Indenture contains provisions for defeasance at any time of the entire indebtedness of this Security upon compliance with certain conditions set forth in the Indenture including the Officer's Certificate described above.

**Events of Default.**

If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

**Governing Law.**

This Security shall be governed by and construed in accordance with the laws of the State of New York (including without limitation Section 5-1401 of the New York General Obligations Law or any successor statute), except to the extent that the law of any other jurisdiction shall be mandatorily applicable.

**Modification and Waivers.**

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in aggregate principal

------

amount of the Securities at the time Outstanding of all series to be affected. The Indenture contains provisions permitting the Holders of a majority in aggregate principal amount of the Securities of all series then Outstanding to waive compliance by the Company with certain provisions of the Indenture. The Indenture also contains provisions permitting the Holders of specified percentages in aggregate principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

As provided in and subject to the provisions of the Indenture, the Holder of this Security shall not have the right to institute any proceeding with respect to the Indenture or for the appointment of a receiver or trustee or for any other remedy thereunder, unless such Holder shall have previously given the Trustee written notice of a continuing Event of Default with respect to the Securities of this series, the Holders of a majority in aggregate principal amount of the Securities of all series at the time Outstanding in respect of which an Event of Default shall have occurred and be continuing shall have made written request to the Trustee to institute proceedings in respect of such Event of Default as Trustee and offered the Trustee indemnity satisfactory to it against the costs, expenses and liabilities to be incurred in compliance with such request, and the Trustee shall not have received from the Holders of a majority in aggregate principal amount of Securities of all series at the time Outstanding in respect of which an Event of Default shall have occurred and be continuing a direction inconsistent with such request, and shall have failed to institute any such proceeding, for 60 days after receipt of such notice, request and offer of indemnity. The foregoing shall not apply to any suit instituted by the Holder of this Security for the enforcement of any payment of principal hereof or any premium or interest hereon on or after the respective due dates expressed herein.

No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

**Authorized Denominations.**

The Securities of this series are issuable only in registered form without coupons in denominations of $2,000 and integral multiples of $1,000 in excess thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor and of authorized denominations, as requested by the Holder surrendering the same.

No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith.

**Owners.**

The Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the absolute owner hereof for all purposes, whether or not this Security be overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

**Defined Terms.**

------

All terms used in this Security which are defined in Indenture shall have the meanings assigned to them in the Indenture and in the Officer's Certificate establishing the terms of the Securities of this series.

## Exhibit 5.1

**Exhibit 5.1**

February 16, 2023

<br>Tucson Electric Power Company

88 East Broadway Boulevard

Tucson, AZ 85701

Ladies and Gentlemen:

I am Vice President, General Counsel and Assistant Corporate Secretary of Tucson Electric Power Company, an Arizona corporation (the "**Company**"), and have acted as counsel for the Company in collaboration with Morgan, Lewis & Bockius LLP in connection with the preparation of a registration statement on Form S-3 (File No. 333-264708) (the "**Registration Statement**"), filed on May 5, 2022 with the Securities and Exchange Commission (the "**Commission**") under the Securities Act of 1933, as amended (the "**Securities Act**"). The Registration Statement relates to, among other things, the offer and sale of $375,000,000 aggregate principal amount of the Company's 5.50% Senior Notes due 2053 (the "Notes"), issued under an Indenture (For Unsecured Debt Securities), dated as of November 1, 2011 (as amended and supplemented, the "**Indenture**"), between the Company and U.S. Bank Trust Company, National Association (as successor to U.S. Bank National Association), as trustee (the "**Trustee**"), as further supplemented by an officer's certificate, dated February 16, 2023, establishing the terms of the Notes (the "**Officer's Certificate**").

In connection with this opinion letter, I have examined originals, or copies certified or otherwise identified to my satisfaction, of (i) the Restated Articles of Incorporation of the Company, as amended, and the Bylaws of the Company, as amended, (ii) certain resolutions of the Company's Board of Directors relating to the Registration Statement and the Notes, (iii) the Registration Statement and the prospectus included therein, (iv) the Indenture, (v) the Officer's Certificate and (vi) such other instruments, certificates, records, and documents, and such matters of law, as I have considered necessary or appropriate for the purposes hereof. In such examination, I have assumed the genuineness of all signatures, the authenticity of all documents submitted to me as originals, the conformity to the original documents of all documents submitted to me as copies, and the authenticity of the originals of such latter documents. As to any facts material to my opinion, I have, when relevant facts were not independently established, relied upon the Registration Statement, resolutions, instruments, certificates, records and documents.

I have assumed for purposes of the opinion expressed below, without any independent investigation or verification of any kind, the due authorization, execution and delivery of the Indenture by the Trustee; the due authentication of the Notes by the Trustee; the legal right and power under all applicable laws and regulations of the Trustee to execute, deliver and perform its obligations under the Indenture; and the validity, binding effect and enforceability against the Trustee of the Indenture in accordance with its terms.

Based upon the foregoing, I am of the opinion that:

&nbsp;&nbsp;&nbsp;&nbsp;(1) The Company is a corporation validly existing and in good standing under the laws of the State of Arizona; and

------

&nbsp;&nbsp;&nbsp;&nbsp;(2) The Notes have been legally issued and constitute valid and binding obligations of the Company.

I hereby consent to the use of this opinion letter as Exhibit 5 to the Registration Statement and to the reference to me under the caption "Legal Matters" in the prospectus included in the Registration Statement. In giving such consent, I do not admit that I am acting within the category of persons whose consent is required under Section 7 of the Securities Act or the rules or regulations of the SEC thereunder.

This opinion is limited to the laws of the States of Arizona and New York and the federal laws of the United States of America. As to all matters of New York law I have, with your consent, relied upon the opinion of even date herewith rendered to you by Morgan, Lewis & Bockius LLP of New York, New York, counsel to the Company, and the opinions expressed herein upon such reliance are subject to the same assumptions, qualifications and limitations set forth therein.

Morgan, Lewis & Bockius LLP is authorized to rely upon this letter as to the matters of Arizona law as if this letter were addressed to them.

Very truly yours,

/s/ Amy J. Welander

Amy J. Welander, Esq.

## Exhibit 5.2

**Exhibit 5.2**

February 16, 2023

<br>Tucson Electric Power Company

88 East Broadway Boulevard

Tucson, AZ 85701

Ladies and Gentlemen:

We have acted as counsel to Tucson Electric Power Company, an Arizona corporation (the "**Company**"), in connection with the preparation of a registration statement on Form S-3 (File No. 333-264708) (the "**Registration Statement**"), filed on May 5, 2022 with the Securities and Exchange Commission (the "**Commission**") under the Securities Act of 1933, as amended (the "**Securities Act**"). The Registration Statement relates to, among other things, the offer and sale of $375,000,000 aggregate principal amount of the Company's 5.50% Senior Notes due 2053 (the "**Notes**"), issued under an Indenture (For Unsecured Debt Securities), dated as of November 1, 2011 (as amended and supplemented, the "**Indenture**"), between the Company and U.S. Bank Trust Company, National Association (as successor to U.S. Bank National Association), as trustee (the "**Trustee**"), as further supplemented by an officer's certificate, dated February 16, 2023, establishing the terms of the Notes (the "**Officer's Certificate**").

In connection with this opinion letter, we have examined originals, or copies certified or otherwise identified to our satisfaction, of (i) the Restated Articles of Incorporation of the Company, as amended, and the Bylaws of the Company, as amended, (ii) certain resolutions of the Company's Board of Directors relating to the Registration Statement and the Notes, (iii) the Registration Statement and the prospectus included therein, (iv) the Indenture, (v) the Officer's Certificate, and (vi) such other instruments, certificates, records, and documents, and such matters of law, as we have considered necessary or appropriate for the purposes hereof. In such examination, we have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals, the conformity to the original documents of all documents submitted to us as copies, and the authenticity of the originals of such latter documents. As to any facts material to our opinion, we have, when relevant facts were not independently established, relied upon the Registration Statement, resolutions, instruments, certificates, records, and documents.

We have assumed for purposes of the opinion expressed below, without any independent investigation or verification of any kind, the due authorization, execution and delivery of the Indenture by the Trustee; the due authentication of the Notes by the Trustee; the legal right and power under all applicable laws and regulations of the Trustee to execute, deliver and perform its obligations under the Indenture; and the validity, binding effect and enforceability against the Trustee of the Indenture in accordance with its terms.

Based upon the foregoing, we are of the opinion that:

&nbsp;&nbsp;&nbsp;&nbsp;(1) The Company is a corporation validly existing and in good standing under the laws of the State of Arizona; and

&nbsp;&nbsp;&nbsp;&nbsp;(2) The Notes have been legally issued and constitute valid and binding obligations of the Company.

------

We hereby consent to the use of this opinion letter as Exhibit 5 to the Registration Statement and to the reference to us under the caption "Legal Matters" in the prospectus included in the Registration Statement. In giving such consent, we do not admit that we are acting within the category of persons whose consent is required under Section 7 of the Securities Act or the rules or regulations of the SEC thereunder.

This opinion is limited to the laws of the States of Arizona and New York and the federal laws of the United States of America. As to all matters of Arizona law we have, with your consent, relied upon the opinion of even date herewith rendered to you by Amy J. Welander, Esq., Vice President, General Counsel and Assistant Corporate Secretary of the Company, and the opinions expressed herein upon such reliance are subject to the same assumptions, qualifications and limitations set forth therein.

Amy J. Welander, Esq., is authorized to rely upon this letter as to the matters of New York law as if this letter were addressed to her.

Very truly yours,

/s/ Morgan, Lewis & Bockius LLP

<br>