“More megawatt-hours for the same dollars:” Battery
The developers of Victoria''s first four-hour big battery say the costs of building large-scale battery energy storage are coming down in Australia, as
773 MW of commissioned energy storage capacity and 21 utility-scale storage projects with a combined capacity of 2,326 MW under construction or undergoing commissioning at 30 June 2025. Figure 4: Emissions from electricity generation in Victoria, 2013/14 to 2024/25
Victoria has 12 commissioned large-scale storage systems and 3 in commissioning – with a total output capacity of 1028 MW and storage capacity of more than 1.7 GWh. Storage capacity = how much total energy is stored in each battery. Output capacity = how much energy a battery can provide at a given time.
Victoria is the home of big batteries and has legislated storage targets of at least 2.6 GW by 2030 and 6.3 GW by 2035 to provide crucial support for more renewable capacity. Storage is a vital part of our electricity grid. In the future, much of our energy will be generated closer to where it is used and the way we use it will be more efficient.
Firstly, for much of the past 50 years, Victoria's economy has been powered by vast and low-cost oil, gas and cheap brown coal. But that base is rapidly disappearing. Coal power stations must close because of climate change. Local gas supplies will run short of demand within the coming years.
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