On 23 September 2026, we made our final decision on Transgrid’s revenue proposal for the 2026–31 regulatory control period for the System Strength Project. 

In accordance with clause 53(4) of the Electricity Infrastructure Investment Regulation 2021 (EII Regulation), publication of our determination document and accompanying information will occur as soon as reasonably practicable, following notification from the Infrastructure Planner (the Secretary of NSW DCCEEW) that project financial close has been reached. 

On 21 August 2026, we received notification from NSW DCCEEW that financial close for the System Strength Project had been achieved. We published our final decision and accompanying appendices on 30 September 2026. Confidential Appendix C – Rate of return averaging periods will not be published as it contains commercially sensitive information.