WA MARKET UPDATE
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Electricity Prices
In November 2025, Western Australia’s electricity market remained largely stable, though short-term price fluctuations persisted during evening peaks. Strong rooftop solar generation continued to support low daytime prices, while variable wind output and moderate demand throughout spring helped keep the market balanced. Evening periods still saw higher prices as solar output declined and local network constraints added pressure, particularly in Perth and regional centres. Maintenance at key gas and coal units also contributed to temporary supply tightness in certain areas.
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Generation Mix
Western Australia’s electricity supply in November was driven by a mix of gas, coal, wind, and solar, with renewables making up around 35–40% of generation. Rooftop solar continued to shine as the biggest daytime contributor, helping to keep midday prices down across Perth and regional centres. Wind generation, however, was more unpredictable throughout the month, creating some pressure on evening prices when output dipped.
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Key influences on supply and pricing included:
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Muja Power Station (Collie): Maintenance on several units limited coal-fired generation capacity.
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Gas plants (Pinjar and Kwinana): Supported evening peaks, though higher fuel costs added some price pressure.
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Wind variability: Caused brief price spikes during periods of low output.
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Rooftop solar: Kept daytime wholesale prices lower, particularly in Perth and nearby regions.
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Battery storage trials: Ongoing at Collie and Kwinana, contributing to grid stability and evening peak support.
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Futures Pricing
Forward electricity prices for November 2025 remained relatively steady, with small fluctuations of around ±6–9%. Evening peak contracts were modestly higher due to network constraints and variable wind output, while strong midday solar helped maintain overall average price stability.
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what it means for your business
The stabilising market provides a valuable opportunity for businesses to review their energy procurement strategies ahead of the summer months. While daytime prices are generally low due to strong solar generation, evening peak volatility remains a risk for businesses with high-demand operations after hours. Local outages or network congestion could trigger temporary price spikes, particularly if hotter conditions increase demand.
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If your business does not yet have a strategy in place, we can help. Contact us for a free bill check or to discuss a tailored energy procurement plan.
Construction has officially begun on the 105 MW King Rocks Wind Farm, located east of Hyden in WA’s Wheatbelt region. Led by Synergy, the project forms a central pillar of Western Australia’s strategy to phase out all state-owned coal-fired generation by 2030.
Once completed, King Rocks will feature around 20–25 large-scale wind turbines (final configuration depending on turbine selection), making it one of the most significant new renewable energy assets in the South West Interconnected System (SWIS). It is expected to produce enough electricity to power tens of thousands of homes each year, reducing reliance on coal and gas during high-demand periods.
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The project is also critical for supporting the planned closure of Muja and Collie power stations. As these ageing coal assets retire, WA requires large volumes of new renewable capacity, firming resources, and system services. King Rocks contributes directly to that gap by delivering:
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Stronger renewable generation during evening and overnight periods, complementing WA’s large rooftop solar footprint.
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Reduced pressure on gas-fired generation, helping moderate future gas use and associated costs.
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Improved regional grid resilience, particularly in areas with growing agricultural and mining demand.
Beyond energy supply, King Rocks brings significant economic and regional benefits, including hundreds of construction jobs, local procurement opportunities, and ongoing operational employment. Local governments in the Wheatbelt also benefit through long-term rates and landholder payments, supporting regional development.
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As Synergy continues to roll out its broader renewable energy pipeline—which includes wind, solar, and large-scale batteries—King Rocks represents a major milestone in WA’s long-term decarbonisation and grid-modernisation strategy.
Major Battery Projects Advance Across WA
Throughout November, Western Australia made significant progress on two major battery storage projects that strengthen the state’s transition away from coal. Construction continued on the 100 MW / 400 MWh Merredin Big Battery, positioned along the Muja–Kalgoorlie 220 kV transmission line to boost energy security for the Wheatbelt and Eastern Goldfields by storing excess solar and supporting evening demand. At the same time, Synergy completed the Kwinana Battery Stage 2, a 200 MW / 800 MWh facility expected online before Christmas. This project will help absorb surplus daytime solar and provide reliable firming capacity during peak periods. The milestone also aligned with a new renewable energy record for the SWIS, reflecting the state’s accelerating move toward a more resilient, renewable-powered grid.
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what this means for businesses
the expansion of large-scale battery storage is a positive step toward a more stable and predictable energy market. As more batteries come online, they help smooth out price volatility, particularly during the evening peak when solar drops off and wholesale prices typically rise. Over time, this added firming capacity can reduce the frequency and severity of price spikes, improving budget certainty for large energy users.
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These projects also support the transition away from coal by strengthening grid reliability during periods of high demand or low renewable output. For businesses operating in the Wheatbelt, Eastern Goldfields, and Perth metropolitan areas, this means greater protection against outages and fewer supply constraints.
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With WA heading into a summer of higher electricity use, this is an opportune time for businesses to reassess forward contracts, review energy risk exposure, and explore strategies like peak-shifting, behind-the-meter solar, or battery solutions to take advantage of a more renewables-backed grid.
WA Domestic Gas Statement update
On 13 November, the Western Australian Government released an updated WA Domestic Gas Statement, providing a more detailed and transparent view of the state’s gas market. The update outlines the status of existing gas projects, the level of compliance from LNG exporters with domestic supply obligations, and forward projections for how much gas will be available to the local market over the next three years.
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The Statement is part of WA’s broader effort to ensure a stable and reliable domestic gas supply, critical given the state's heavy reliance on gas for electricity generation, industrial processes, and mining operations. The document highlights expected production levels, planned maintenance outages, new project timelines, and any risks that could affect supply or pricing. It also reinforces the Government’s commitment to monitoring LNG exporters to ensure they continue meeting domestic gas commitments before exporting additional volumes.
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This increased transparency aims to give industry, energy users, and investors greater confidence in future gas availability and helps support long-term planning across WA’s key sectors. If you want, I can also add a “what it means for businesses” section.