Wholesale statistics

The AER monitors the performance of wholesale electricity and gas markets and publishes data from that monitoring in reports such as the annual State of the Energy Market and Wholesale Markets Quarterly report. This page provides the key data series for these markets; the charts and tables, as well as underlying data, which can be downloaded.

Electricity outcomes for the Q1 2021 have been updated and highlights include:


  • Q1 2021 prices (VWA) were the lowest in Victoria ($27/MWh), followed by Tasmania ($34/MWh), NSW ($39/MWh), Queensland ($45/MWh), with the highest quarterly prices occurring in South Australia ($53/MWh).

  • The last time any region had a Q1 VWA price below $27/MWh was in 2012.

  • Victoria was the cheapest region in the NEM for the first time since the Hazelwood power station closed at the end of Q1 2017. It also exported more energy this quarter than other quarter since then.

  • South Australia was the only region that had an increase in the VWA price compared to last quarter, largely due to the high price event on 12 March.

  • Prices exceeded $5,000/MWh in South Australia across 7 trading intervals (30 minute periods) during the quarter, increasing the quarterly price by $15/MWh.

  • Low levels of demand due to the mild temperatures this summer and increased rooftop solar drove a high number of negative prices across the quarter, mostly in Victoria and South Australia.


  • Average gas market prices were slightly up, ranging between $5.50-6.30 per GJ.
  • Northern market prices increase above southern market prices for the first time since Q3 2018.
  • Southerly QSN link flows changed direction to flow north in significant quantities.
  • Transportation auction legs purchased through the Day Ahead Auction remained high this quarter – 1,619 following a record last quarter (1,716).
  • Record Roma production and LNG exports occurred over consecutive months in Q4 2020.