Publication of Supplemental Prospectus

SSE PLC

20 June 2022



SSE plc, Scottish Hydro Electric Power Distribution plc, Scottish Hydro Electric Transmission plc, Southern Electric Power Distribution plc - Publication of Supplement dated 20 June 2022 to the Base Prospectus dated 17 March 2022

The following supplement has been approved by the Financial Conduct Authority and is available for viewing:

Supplement dated 20 June 2022 (the Supplement) to the Base Prospectus dated 17 March 2022 relating to the SSE plc, Scottish Hydro Electric Power Distribution plc, Scottish Hydro Electric Transmission plc and Southern Electric Power Distribution plc €10,000,000,000 Euro Medium Term Note Programme.

To view the full document, please paste the following URL into the address bar of your browser.

http://www.rns-pdf.londonstockexchange.com/rns/4954P_1-2022-6-20.pdf

A copy of the Supplement will be submitted to the National Storage Mechanism and will shortly be available for inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

For further information, please contact:

George Duncan

Treasury

SSE plc

Inveralmond House

200 Dunkeld Road

Perth

Scotland, PH1 3AQ

Tel: 01738 455 121

Fax: 01738 455 282

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Supplement may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Supplement) only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Supplement is not addressed. Prior to relying on the information contained in the Supplement you must ascertain from the Supplement whether or not you are part of the intended addressees of the information contained therein.

Your right to access this service is conditional upon complying with the above requirement.