The AEMC has released a consultation paper on a rule change request from ERM Power that seeks changes to the medium term projected assessment of system adequacy (MT PASA). The MT PASA is a forecasting exercise to assess whether or not electricity supply is expected to meet demand across a two year horizon.

Under the National Electricity Rules, AEMO is required to produce a range of forecasts as part of the MT PASA, including projected demand for electricity and the availability of generators. The forecasts account for unplanned outages such as a generation unit becoming unavailable due to a technical issue. 

AEMO’s forecasts provide a signal to the market on whether the reliability standard is expected to be met in the medium term. This gives market participants the opportunity to respond by supplying the amount of generation and demand response that is expected by the reliability standard. 

The proposed changes, which relate to three main areas of the MT PASA, seek to:

  • increase the transparency and accuracy of generation availability data 
  • increase the transparency and accuracy of demand forecasts
  • extend the outlook of MT PASA from two to three years.

Submissions on the consultation paper are due by 15 August 2019.

Media: Bronwyn Rosser, Communication Specialist, 0423 280 341;