320 Bay Street, 14th Floor Toronto, ON M5H 4A6 www.computershare.com Form of Proxy - Annual Meeting of Fortis Inc. to be held on 7 May 2026 0251OA Fold Fold CONTROL NUMBER This Form of Proxy is solicited by and on behalf of the management of Fortis Inc. (“Management”) To vote by telephone or the Internet, you will need to provide your CONTROL NUMBER listed below. If you vote by telephone or the Internet, DO NOT mail back this proxy. Voting by mail is the only method for securities held in the name of a corporation or securities being voted on behalf of another individual. Voting by mail or by Internet are the only methods by which a holder may choose an appointee other than the Management Nominees named on the reverse of this proxy. Instead of mailing this proxy, you may choose one of the voting methods outlined above to vote this proxy. Notes to proxy Proxies submitted must be received by 10:30 a.m., Newfoundland Time, on 5 May 2026. VOTE USING THE TELEPHONE OR INTERNET 24 HOURS A DAY 7 DAYS A WEEK! 1. Every holder has the right to appoint some other person or company of their choice, who need not be a holder, to attend and act on their behalf at the meeting. If you wish to appoint a person or company other than the persons whose names are printed herein, please insert the name of your chosen proxyholder in the space provided (see reverse). 2. If the securities are registered in the name of more than one owner (for example, joint ownership, trustees, executors, etc.), then all those registered should sign this proxy. If you are voting on behalf of a corporation or another individual you may be required to provide documentation evidencing your power to sign this proxy with signing capacity stated. If you are voting on behalf of a corporation you are required to provide your name and designation of office, e.g., ABC Inc. per John Smith, President. 3. This proxy should be signed in the exact manner as the name appears on the proxy. 4. If this proxy is not dated, it will be deemed to bear the date on which it is mailed by Management to the holder. 5. The securities represented by this proxy will be voted as directed by the holder; however, if such a direction is not made in respect of any matter, this proxy will be voted as recommended by Management. 6. The securities represented by this proxy will be voted or withheld from voting, in accordance with the instructions of the holder, on any ballot that may be called for and, if the holder has specified a choice with respect to any matter to be acted on, the securities will be voted accordingly. 7. This proxy confers discretionary authority in respect of amendments to matters identified in the Notice of Meeting or other matters that may properly come before the meeting. 8. This proxy should be read in conjunction with the accompanying documentation provided by Management. • Call the number listed BELOW from a touch tone telephone. • Go to the following website: www.investorvote.com • Smartphone? Scan the QR code to vote now. • You can enroll to receive future securityholder communications electronically by visiting www.investorcentre.com. • You can attend the meeting virtually by visiting the URL provided on the back of this proxy. To Vote Using the Telephone To Vote Using the Internet To Receive Documents Electronically To Virtually Attend the Meeting Holder Account Number Security Class 1-866-732-VOTE (8683) Toll-Free

AR2 0251PC I/We being holder(s) of Fortis Inc. (“Fortis”), hereby appoint: David G. Hutchens of Tucson, Arizona, or failing him, James R. Reid of Toronto, Ontario, or failing him, Jocelyn H. Perry, of Paradise, Newfoundland and Labrador (each a “Management Nominee”), Appointment of Proxyholder Interim Financial Statements – Mark this box if you would like to receive Interim Financial Statements and accompanying Management’s Discussion and Analysis by mail. Annual Financial Statements – Mark this box if you would NOT like to receive the Annual Financial Statements and accompanying Management’s Discussion and Analysis by mail. Information Circular – Mark this box if you would like to receive the Information Circular by mail for the next securityholders’ meeting. If you are not mailing back your proxy, you may register online to receive the above financial report(s) by mail at www.computershare.com/mailinglist. Print the name of the person you are appointing if this person is someone other than the Management Nominees listed herein. OR As my/our proxyholder with full power of substitution and to attend, act and to vote for and on behalf of the shareholder(s) in accordance with the following direction(s) (or if no directions have been given, as the proxyholder sees fit) and all other matters that may properly come before the Annual Meeting (the “Meeting”) of Fortis to be held at the Fortis Energy Centre, 5 Springdale Street, 4th floor, St. John’s, Newfoundland and Labrador as well as online at https://meetings.lumiconnect.com/400-623-793-903 on 7 May 2026 at the hour of 10:30 a.m. (Newfoundland Time) and at any adjournment or postponement thereof. VOTING RECOMMENDATIONS ARE INDICATED BY HIGHLIGHTED TEXT OVER THE BOXES. Fold Fold Note: If completing the appointment box above and your appointee intends on attending online YOU MUST go to https://www.computershare.com/Fortis and provide Computershare with the name and email address of the person you are appointing. Computershare will use this information ONLY to provide the appointee with a user name to gain entry to the online meeting. 389179 1. Election of Directors - To elect the directors proposed in the Management Information Circular. For Withhold For Withhold For Withhold 2. Appointment of auditors and authorization of directors to fix the auditors’ remuneration as described in the Management Information Circular. 3. Approval of the advisory and non-binding resolution on the approach to executive compensation as described in the Management Information Circular. For For Withhold Against Signature of Proxyholder I/We authorize you to act in accordance with my/our instructions set out above. I/We hereby revoke any proxy previously given with respect to the Meeting. If no voting instructions are indicated above, this Proxy will be voted as recommended by Management. If you are voting on behalf of a corporation you are required to provide your name and designation of office, e.g., ABC Inc. per John Smith, President. DD / MM / YY Signature(s) Date Signing Capacity 01. Pierre J. Blouin 07. Mary C. Hemmingsen 04. Margarita K. Dilley 10. Gianna M. Manes 02. Lawrence T. Borgard 08. David G. Hutchens 11. Donald R. Marchand 05. Julie A. Dobson 03. Maura J. Clark 09. Gregory E. Knight 12. Jo Mark Zurel 06. Lisa L. Durocher FTSQ