Australia becomes the third largest battery storage market in the world, capacity up 233% in a year

Australia third largest battery storage market in the world

Australia became the third largest battery storage market in the world in 2025, behind only the United States and China, according to the Clean Energy Council, the peak renewable energy industry association in Australia. A utility scale battery is a large system built to store electricity for the whole grid, rather than a single home. The council reports that large scale battery capacity commissioned in a single year rose 233% in 2025 compared with 2024, reaching 2 gigawatts and 5.1 gigawatt hours. A gigawatt is 1,000 megawatts, enough capacity to power hundreds of thousands of homes at once, and a gigawatt hour measures how long that power can be delivered, so 5.1 gigawatt hours is how much electricity the new batteries can hold and release. Independent industry reporting on the same council report adds that another 4.3 gigawatts of battery capacity reached financial close in 2025, the point where the money to build a project is fully committed, years before construction finishes.

Investment built up over 8 years, concentrated in 3 states

Since 2017, Australia has built 20.6 gigawatts of large scale battery storage, backed by 31.4 billion Australian dollars of investment. That spending sits mostly in 3 states. Victoria accounts for 4,256 megawatts of that capacity and 8.4 billion Australian dollars of investment, New South Wales for 6,100 megawatts and 7.3 billion Australian dollars, and Queensland for 4,910 megawatts and 7.1 billion Australian dollars.

Why big batteries suddenly make financial sense

The growth is not only a policy story, it is a financing one. Jean Christophe Cheylus, chief executive of Neoen Australia, a company that built some of the earliest big batteries in the country, described why lenders started treating the technology as mainstream.

As the project proved its performance and revenue potential, the economics of big batteries became clearer, helping shift the technology toward mainstream financing.

Jean Christophe Cheylus, chief executive of Neoen Australia. Source 5.

That account, from a company that had to convince lenders directly, is the reason the growth rate above is possible at all, not just a number appearing on its own.

A record for batteries, a decade low for wind and solar

The same Clean Energy Council report carries a contrasting finding. New wind and solar projects reaching financial close fell to 2.3 gigawatts in 2025, one of the lowest levels in a decade, a 46% decline from 2024, driven partly by a 59% drop in onshore wind commitments specifically. A record year for batteries and a weak year for wind and solar sit inside the same annual report.

Planning by the market operator, cited by the Clean Energy Finance Corporation, a government owned corporation, calls for close to 33 gigawatts of battery capacity by 2030 on the National Electricity Market, the grid covering the eastern and southern states of Australia. More than 9 gigawatts of battery capacity operates on that grid today, and the pipeline of battery projects working toward the 2030 figure already totals around 43 gigawatts, more than the target itself.

But there is a risk with that, and that is that we miss some benefits of diversification.

Keith Lovegrove, of ITP Thermal, an independent energy consultancy. Source 1.