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 here.

Highlights include:

Electricity Q1 2021

  • 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 any 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.

Gas Q1 2021

  • Average gas market prices were slightly up from last quarter ranging between $5.50-6.40 per GJ.

  • Northern market prices remained higher again this quarter, with the north-south price gap widening further.

  • Following the reversal of gas flows last quarter, significant quantities continued flowing north into Queensland. 

  • The Day Ahead Auction remained popular with 9.9 PJ of capacity won across all auction facilities. 

  • Roma production and LNG exports remained high following record levels across Q4 2020.

  • Liquidity in the east coast spot markets continue to increase, reaching a record of 17% of scheduled demand this quarter.