2026 RORI Review - Beta And Its Drivers - David Johnstone - 13 November 2025

Before publishing a draft RORI, energy laws require the AER to seek concurrent expert opinions or evidence about the proposed RORI. To this end, on 24 November 2025, we published a report that has been prepared by the 2026 RORI review’s appointed Eligible Experts, with a particular focus on the key issues raised in the AER’s discussion paper.

The Eligible Experts have asked the AER to also publish a separate paper that has been prepared by one of the Eligible Experts, Professor Johnstone, which sets out in more detail some of the ideas referenced in the Eligible Experts’ report.