NOVEMBER 2022 INVESTOR ROADSHOW PRESENTATION

Disclaimer The information in this presentation was prepared by Meridian Energy with due care and attention. However, the information is supplied in summary form and is therefore not necessarily complete, and no representation is made as to the accuracy, completeness or reliability of the information. In addition, neither the company nor any of its directors, employees, shareholders nor any other person shall have liability whatsoever to any person for any loss (including, without limitation, arising from any fault or negligence) arising from this presentation or any information supplied in connection with it. This presentation may contain forward-looking statements and projections. These reflect Meridian's current expectations, based on what it thinks are reasonable assumptions. Meridian gives no warranty or representation as to its future financial performance or any future matter. Except as required by law or NZX or ASX listing rules, Meridian is not obliged to update this presentation after its release, even if things change materially. This presentation does not constitute financial advice. Further, this presentation is not and should not be construed as an offer to sell or a solicitation of an offer to buy Meridian Energy securities and may not be relied upon in connection with any purchase of Meridian Energy securities. This presentation contains a number of non-GAAP financial measures, including Energy Margin, EBITDAF, Underlying NPAT and gearing. Because they are not defined by GAAP or IFRS, Meridian's calculation of these measures may differ from similarly titled measures presented by other companies and they should not be considered in isolation from, or construed as an alternative to, other financial measures determined in accordance with GAAP. Although Meridian believes they provide useful information in measuring the financial performance and condition of Meridian's business, readers are cautioned not to place undue reliance on these non-GAAP financial measures. The information contained in this presentation should be considered in conjunction with the company's financial statements, which are included in Meridian's integrated report for the year ended 30 June 2022 and is available at: www.meridianenergy.co.nz/investors All currency amounts are in New Zealand dollars unless stated otherwise. Meridian. NOVEMBER 2022 INVESTOR ROADSHOW PRESENTATION 30

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