SSE : Proxy Form

FORM OF PROXY

ANNUAL GENERAL MEETING 2023

GUIDANCE NOTES

1. The full text of each resolution is set out in the Notice of
   Annual General Meeting 2023 which can be found in the separate shareholder circular or alternatively on the SSE website at sse.com .
2. To be valid, all voting instructions must be received by the Company's Registrar no later than 12.30pm on 18 July 2023.
3. Pursuant to Regulation 41 of the Uncertificated Securities Regulations 2001 and section 360B(2) of the Companies Act 2006, entitlement to attend and vote at the meeting and the number of votes which may be cast thereat will be determined by reference to the Register of Members of the Company as at 12.30pm on 18 July 2023. Changes to entries on the Register of Members after that time shall be disregarded in determining the rights of any person to attend and vote at the meeting.
4. You are entitled to appoint a proxy or proxies, who need not be an SSE shareholder, or the Chair of the Meeting, to exercise all or any of your rights, to attend, speak, and vote. You may appoint more than one proxy, provided that each proxy is appointed in respect of a different share or shares. If you wish to appoint a person other than the Chair, please insert the name of your chosen proxy holder in the space provided. If the proxy is being appointed in relation to less than your full voting entitlement, please enter in the box next to the proxy holder's name the number of shares in relation to which they are authorised to act as your proxy. If left blank your proxy will be deemed to be authorised in respect of your full voting entitlement. If you appoint more than one proxy, additional proxy form(s) may be obtained by contacting the Company's Registrar's helpline on 0345 143 4005 or you may photocopy this form. All forms must be signed and should be returned together in the same envelope. Calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom are charged at the applicable international rate. Link Group are open between 9.00am-5.30pm, Monday to Friday, excluding public holidays in England and Wales.
5. Place an 'X' in one box only for each resolution. Votes 'withheld' are not votes in law and will not be counted in the calculation of the votes 'for' or 'against' a resolution.
6. A corporation may appoint more than one corporate representative. A corporation's Form of Proxy must be executed under the common seal, if any, or signed by a duly authorised officer (stating the officer's capacity).
7. In the case of joint holders, any one holder may sign the form. The vote of the senior joint holder who tenders a vote, whether in person or by proxy, will be accepted to the exclusion of the votes of the other joint holders and for this purpose seniority will be determined by the order in which the names stand in the Register of Members in respect of the joint holding.
8. The completed and signed Form of Proxy (together with any power of attorney or other authority under which it is signed or a notarially certified copy thereof) must be returned to the Company's Registrar, Link Group, PXS1, Central Square, 29 Wellington Street, Leeds LS1 4DL no later than 48 hours prior to the AGM.

1. You can submit your Form of Proxy electronically by accessing our website, sse.com . Electronic facilities are available to all shareholders and those who use them will not be disadvantaged. Before you can submit your Form of Proxy online you will be asked to agree to certain terms and conditions. You will require your Investor Code printed on the front of this form to log in. Your IVC can also be found on your share certificate, or SSE Shareholder Portal users (www.sse-shares.com ) will find this under 'Manage your account' when logged in to the SSE Shareholder Portal. On receipt of your vote you will be issued with a transaction reference number. If you submit your Form of Proxy online it should reach the Registrar by 12.30pm on 18 July 2023 (48 hours prior to the AGM). Should you complete your Form of Proxy electronically and then post a hard copy, the form that arrives last will be counted to the exclusion of instructions received earlier, whether electronic or postal. Please see the terms and conditions of the service on
   the website.
2. To appoint one or more proxies or to give an instruction to
   a proxy (whether previously appointed or otherwise) via the CREST system, CREST messages must be received by the issuer's agent (ID Number RA10) no later than 48 hours before the time appointed for holding the meeting. For this purpose, the time of receipt will be taken to be the time (as determined by the timestamp generated by the CREST system) from which the issuer's agent is able to retrieve the message. The Company may treat as invalid a proxy appointment sent by CREST in the circumstances set out in Regulation 35(5)(a) of the Uncertificated Securities Regulations 2001.
   Proxymity. If you are an institutional investor you may be able to appoint a proxy electronically via the Proxymity platform, a process which has been agreed by the Company and approved by the Registrar. For further information regarding Proxymity, please go to www.proxymity.io . Your proxy must be lodged by 12.30pm on 18 July 2023 in order to be considered valid. Before you can appoint a proxy via this process you will need to have agreed to Proxymity's associated terms and conditions. It is important that you read these carefully as you will be bound by them and they will govern electronic appointment of your proxy.
3. The completion and return of this form will not preclude a member from attending the meeting and voting in person.
4. Kindly note: This form is issued only to the addressee(s) and is specific to the unique designated account printed hereon. This personalised form is not transferable between different
   (i) account holders; or (ii) uniquely designated accounts. Neither SSE plc nor Link Group accepts any liability for any instruction that does not comply with these conditions.