Contact Energy FY25 Financial Results Presentation

25 July 2025 Contact Energy FY25 Financial Results Presentation Contact’s Chief Executive, Mike Fuge, and Chief Financial Officer, Matthew Forbes, will make a presentation for investors, analysts, and media on Contact’s Full Year 2025 Financial Results for the twelve months ended 30 June 2025. Date: Monday 18 August 2025 Time: 11.00a.m. NZST. Live Webcast link: Participants may register for the webinar/meeting at the following link: https://events.teams.microsoft.com/event/c6bbdcd4-fccd-443d-aa05-7443bf070f3d@30e19951-2409- 4ad6-b0ad-4dd46557cf0f Registration will require you to fill out some basic information including, your name, email address, industry, and organisation. After registering, you will receive a confirmation email containing information about joining the webinar/meeting. Q&A: At the end of the formal presentation Contact invites verbal questions from attendees. For the Q&A, attendees will be required to raise their (virtual) hand if they wish to ask a question. This will place you in the queue. When invited to ask your question, you will need to unmute your microphone. There will be no chat available for written questions. We will endeavour to address all questions during the webcast. However, this will be subject to availability of time. A replay of the results briefing will also be available at: https://contact.co.nz/aboutus/investor- centre once the event has concluded. For further information please contact: Investor enquiries Shelley Hollingsworth Head of Corporate Finance (Acting) +64 27 227 2429 shelley.hollingsworth@contactenergy.co.nz Media enquiries Louise Wright Head of Communications and Reputation +64 21 840 313 media@contactenergy.co.nz