POWER OF ATTORNEY

The undersigned hereby makes, constitutes and appoints each of Julie L. Padilla and Andrew M. Biggerstaff, or either of them acting singly, and with full power of substitution, re-substitution and delegation, the undersigneds true and lawful attorney‑in‑fact (each of such persons and their substitutes and delegees being referred to herein as the Attorney-in-Fact), with full power to act for the undersigned and in the undersigneds name, place and stead, in the undersigneds capacity as an officer, director or stockholder of ALLETE, Inc. (the Company), to:

1. Take such actions as may be necessary or appropriate to enable the undersigned to submit and file forms, schedules and other documents with the U.S. Securities and Exchange Commission (SEC) utilizing the SECs Electronic Data Gathering and Retrieval (EDGAR) system, which actions may include (a) enrolling the undersigned in EDGAR Next and (b) preparing, executing and submitting to the SEC a Form ID, amendments thereto, and such other documents and information as may be necessary or appropriate to obtain codes and passwords enabling the undersigned to make filings and submissions utilizing the EDGAR system;

2. Prepare and execute any and all forms, schedules and other documents (including any amendments thereto) the undersigned is required to file with the SEC, or which the Attorney-in-Fact considers it advisable for the undersigned to file with the SEC, under Section 13 or Section 16 of the Securities Exchange Act of 1934 or any rule or regulation thereunder, or under Rule 144 under the Securities Act of 1933 (Rule 144), including Forms 3, 4 and 5, Schedules 13D and 13G, and Forms 144 (all such forms, schedules and other documents being referred to herein as SEC Filings);

3. Submit and file SEC Filings with the SEC utilizing the EDGAR system or cause them to be submitted and filed by a person appointed under Section 5 below;

4. File, submit or otherwise deliver SEC Filings to any securities exchange on which the Companys securities may be listed or traded;

5. Act as a delegated administrator for the undersigneds EDGAR account, including: (i) appoint, remove and replace delegated account administrators and users; (ii) maintain the security of the undersigneds EDGAR account; and (iii) any other actions contemplated by Rule 10 of Regulation S-T with respect to delegated entities;

6. Cause the Company to accept a delegation of authority from any of the undersigneds EDGAR account administrators and, pursuant to that delegation, authorize the Companys EDGAR account administrators to appoint, remove or replace users for the undersigneds EDGAR account; and

7. Obtain, as the undersigneds representative and on the undersigneds behalf, information regarding transactions in the Companys equity securities from any third party, including the Company and any brokers, dealers, employee benefit plan administrators and trustees, and the undersigned hereby authorizes any such third party to release any such information to the Attorney-in-Fact.

The undersigned acknowledges that:

a) This Power of Attorney authorizes, but does not require, the Attorney-in-Fact to act in his or her discretion on information provided to such Attorney-in-Fact without independent verification of such information;

b) Any documents prepared or executed by the Attorney-in-Fact on behalf of the undersigned pursuant to this Power of Attorney will be in such form and will contain such information as the Attorney-in-Fact, in his or her discretion, deems necessary or desirable;

c) Neither the Company nor the Attorney-in-Fact assumes any liability for the undersigneds responsibility to comply with the requirements of Section 13 or Section 16 of the Exchange Act or Rule 144, any liability of the undersigned for any failure to comply with such requirements, or any liability of the undersigned for disgorgement of profits under Section 16(b) of the Exchange Act; and

d) This Power of Attorney does not relieve the undersigned from responsibility for compliance with the undersigneds obligations under Section 13 or Section 16 of the Exchange Act, including, without limitation, the reporting requirements under Section 13 or Section 16 of the Exchange Act.

The undersigned hereby grants to the Attorney-in-Fact full power and authority to do and perform each and every act and thing requisite, necessary or advisable to be done in connection with the foregoing, as fully, to all intents and purposes, as the undersigned might or could do in person, hereby ratifying and confirming all that the Attorney-in-Fact, or his or her substitute or substitutes, shall lawfully do or cause to be done by authority of this Power of Attorney.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 4 or 5 or Schedules 13D or 13G or Forms 144 with respect to the undersigneds holdings of and transactions in securities of the Company, unless earlier revoked by the undersigned in a signed writing delivered to the Attorney-in-Fact. This Power of Attorney revokes all previous powers of attorney with respect to the subject matter of this Power of Attorney.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of May 23, 2025.

/s/ James J. Hoolihan

Signature

James J. Hoolihan

Print Name

Hoolihan James J 4