1. Under section 38 of the Electricity Industry Act 2010 (“Act”), and having complied with section 39 of that Act, the Electricity Authority (“Authority”) gives notice of making the Electricity Industry Participation Code (Transmission Pricing Methodology Related Amendments) Amendment 2025 (“amendment”).

2. Clauses 6(1), 6(3), 8, 9(1), 10, 11, 12, and 13 of the amendment come into force on 15 December 2025. The remaining clauses come into force on 1 April 2027.

3. The amendment amends Schedule 12.4 of the Electricity Industry Participation Code 2010 (“Code”) (the transmission pricing methodology (TPM)) to:

• incorporate indexation to ensure that costs recovered through the TPM remain broadly aligned with the way costs are calculated for Transpower under Part 4 of the Commerce Act;
• standardise the allocators used in the simple method benefit-based charges (BBC) cap formula to ensure a consistent calculation of the cap in any pricing period; and
• make minor editorial changes to make the TPM clearer.

4. The amendment is secondary legislation for the purpose of the Legislation Act 2019 and is administered by the Authority.

5. A copy of the amendment and the Code is available on the Authority's website http://www.ea.govt.nz/code-and-compliance/the-code/.

6. A copy of the amendment and the Code may also be inspected free of charge or purchased from the Authority, Level 7, Aon Centre, 1 Willis Street, Wellington.

Dated at Wellington this 6th day of November 2025.

ANNA KOMINIK, Chair, Electricity Authority.