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 that can be downloaded.

Highlights include:

Electricity Q2 2021

Financial year spot prices, 2020–21

  • 2020–21 prices (VWA) fell in all regions compared to the previous financial year except Queensland, with prices ranging from $45/MWh in Tasmania to $72/MWh in NSW.
  • Spot prices this financial year fell to their lowest levels since at least 2015–16 in NSW, Victoria, South Australia and Tasmania, with prices falling the most in Victoria (down 40%).
  • 2020–21 prices in Queensland rose by 19% compared to the last financial year as a result of high prices in Q2 2021.
  • A key feature of 2020–21 was a large increase in the volume of negative prices in the middle of the day reflecting the growth in solar generation and lower demand.

Quarterly spot prices, Q2 2021

  • Average quarterly spot prices (VWA) in Q2 2021 increased in every region, with prices ranging from $47/MWh in Tasmania to $141/MWh in Queensland.
  • Spot prices became volatile in the second half of the quarter, especially in Queensland and NSW following the failure at Callide C power station. With less low cost baseload generation available, prices tended to spike during periods of low wind and solar output, and high demand.
  • Half hourly prices exceeded $5,000/MWh 22 times across the quarter. These all occurred in the second half of the quarter and mostly in Queensland and NSW.

FCAS costs in Q2 2021

  • Total FCAS costs in Q2 2021 were $142 million, the second highest quarterly FCAS costs on record.

Gas Q2 2021

Financial year spot prices, 2020–21

  • 2020–21 prices fell in all regions compared to the previous financial year except Queensland, with low prices across all markets over mid-2020.
  • Spot prices this financial year fell to their lowest levels since 2015–16 with average prices ranging between $5.60-6.54 per GJ across the markets.
  • 2020–21 prices in Queensland rose by 9.5% compared to the last financial year as a result of high prices in Q2 2021.

Quarterly trends, Q2 2021

  • Average gas market prices increased significantly, ranging between $7-10 per GJ.
  • QSN link changed direction, flowing significant quantities south in May and June.
  • Activity on the GSH increased significantly, with gas trading at close to record volumes this quarter – 8.3 PJ.
  • Transportation auction legs purchased through the Day Ahead Auction set a new record this quarter – 14.8 PJ for 2003 trades across 13 facilities.
  • Roma production and LNG exports remained high for Q2 despite production and export maintenance outages, following record levels across Q4 2020 and Q1 2021.