Current renewable share: 30% · Updated
WA1 · WEM, 30-min intervals
Loading live generation data...
Western Australia's generation mix in the Wholesale Electricity Market (WEM) is dominated by gas-fired generation, reflecting the state's abundant natural gas reserves. Combined-cycle gas turbines (CCGT) and open-cycle gas turbines (OCGT) together supply the majority of electricity in the South West Interconnected System (SWIS), giving WA a distinctively different fuel profile from the coal-heavy eastern states.
Coal-fired generation from the Collie region (including Bluewaters and Muja power stations) provides additional baseload capacity. However, coal's share of the WEM generation mix is significantly lower than in NSW or Queensland, and several coal units have been earmarked for retirement.
Wind and solar generation are growing across the SWIS, and rooftop solar adoption in Perth and surrounding areas is among the highest in Australia. The lack of interconnection to any other market means the WEM must balance supply and demand entirely from local resources, making the generation mix particularly sensitive to weather conditions and planned maintenance outages.
Western Australia’s WEM generation mix is dominated by gas-fired combined-cycle and open-cycle turbines, with coal from the Collie region (Bluewaters, Muja) providing additional baseload. The live fuel-type breakdown is shown above.
Wind and solar generation are growing across the SWIS, and rooftop solar adoption in Perth is among the highest in Australia, but gas remains the dominant fuel source in the WEM.
The WEM has no interconnection to the NEM or any other market, so it must balance supply and demand entirely from local resources. WA’s abundant natural gas reserves make gas-fired generation the most economic dispatchable option.
gridIQ refreshes the WA generation mix from AEMO WEM SCADA data every 30 minutes, matching the WEM’s trading interval cadence.