The WEM functions performed by AEMO include market operations services, system planning services, and market administration services.

Under the Market Rules, AEMO is required to submit an Allowable Revenue and Forecast Capital Expenditure submission to the Economic Regulation Authority (ERA) on a triennial basis. The ERA is then required to assess the submission and undertake a public consultation process before delivering a determination on the submission. A submission was made to the ERA on 16 September 2016 covering the three years from 1 July 2016 to 30 June 2019. A supplementary proposal was made to the ERA on 17 February 2017.

Under the Market Rules, AEMO is required to publish a financial report showing actual financial performance against budget.

System Management

AEMO performs all System Management functions and obligations under the Market Rules in Western Australia.

These functions, previously performed by Western Power, were transferred to AEMO on 1 July 2016, with almost $15.2 million recoverable annual revenue across the next three years.