Monitoring performance and analysing trends

The AER monitors the performance of wholesale electricity and gas markets and publishes data in reports such as the State of the energy market and the Wholesale markets quarterly.

On this page you can view and download individual charts and data tables from our most recent market performance reports. 

Highlights include:

Electricity Q1 2025

  • Average quarterly prices ranged from $72/MWh in Victoria to $112/MWh in Tasmania. Compared to the previous quarter, prices fell in the northern regions due to a reduction in the number of high prices events and, prices rose in the southern regions due to higher-than-average demand and an increase in the number of high price events. Tasmania was mostly driven by a reduction in the volume of low-priced hydro offers due to dry weather conditions.
  • There were 11 high priced periods – 4 in New South Wales, 3 in Queensland, 3 in South Australia and 1 in Victoria. These high prices occurred due to a combination of contributing factors rather than one single driver, including high demand, low wind output, network limitations and participant rebidding (mostly for technical reasons). 
  • There was a record number of negative-priced 30-minute periods in the NEM (3,598) for a quarter 1. 
  • There were no new participants that entered the Frequency Control Ancillary Services markets. Existing participants altered the services they are registered with 13 additions in mostly raise services. 
  • Base future prices increased across all regions and all forward quarters except for quarter 4 2025 in South Australia. 

Gas Q1 2025

  • This will be updated shortly. 

Quarterly base futures prices and volume traded

This figure shows the prices for base contracts for each quarter for the next four years and the volume of each base contract traded in the most recent quarter.
Content type
Chart
Sector
Electricity

Weekly volume weighted average spot prices - regions

Weekly volume weighted average spot prices - regions
Content type
Chart
Sector
Electricity

Quarterly volume weighted average spot prices - regions

Quarterly volume weighted average spot prices - regions
Content type
Chart
Sector
Electricity

Quarterly volume weighted average price by contribution of price bands - Victoria

Quarterly volume weighted average price by contribution of price bands - Victoria
Content type
Chart
Sector
Electricity

Quarterly volume weighted average price by contribution of price bands - Tasmania

Quarterly volume weighted average price by contribution of price bands - Tasmania
Content type
Chart
Sector
Electricity

Quarterly volume weighted average price by contribution of price bands - South Australia

This figure shows the contribution of spot price in various price bands to the quarterly volume weighted average price in South Australia for the past five year
Content type
Chart
Sector
Electricity