This note is not part of the amendment but is intended to indicate its general effect.

Clauses 6(1), 6(3), 8, 9(1), 10, 11, 12, and 13 of this amendment to the Electricity Industry Participation Code 2010 (Code) come into force on 15 December 2025. The remaining clauses come into force on 1 April 2027.

The amendment amends Schedule 12.4 of the 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.