Decisions

This page is a collection of all AER regulatory decisions.

Use the filters and keyword search to find open, current and historical documents that detail AER decisions on matters such as revenue determinations, access arrangements, pricing proposals, tariff variations, cost allocation methods, cost pass throughs and contingent projects.

Filters

131 result(s), displaying 121 to 131

Ring-fencing guideline (electricity transmission) 2025

The AER has released version 5 of the ring-fencing guideline for electricity transmission.

Ring-fencing

Current

Ring-fencing guideline (electricity distribution) 2025

The AER has released version 4 of the ring-fencing guideline for electricity distribution.

Ring-fencing

Current

Waratah Super Battery – SIPS battery service

Read our determination on the amounts to be paid to Transgrid for the System Integrity Protection Scheme battery service component of the WSB project.

Determinations

Current

Ergon Energy - Ring-fencing Waiver - Isolated Networks - March 2025

The Australian Energy Regulator (AER) is seeking submissions on Ergon Energy’s application  to renew its waiver

Ring-fencing

Open

Ausgrid - Determination 2024–29

Ausgrid electricity revenue determination for the 2024–29 period

Determinations

Current

Directlink - Determination 2025–30

Directlink electricity revenue determination for the 2025–30 period.

Determinations

Open

Ausgrid Increased Customer Demand Requirements in the Macquarie Park Area Contingent Project

Ausgrid’s contingent project application requesting a revenue increase to fund its Wallumatta substation.

Contingent projects

Open

NSW Electricity Infrastructure Roadmap - contribution determination 2025−26

View our decision on the maximum amount electricity distributors can pass through to consumers in 2025-26 as costs for the NSW infrastructure roadmap.

Cost pass throughs

Current