Battery storage is playing an increasingly important role in key electricity markets, with new output records set recently in Australia and California as grids shift from traditional baseload power to variable renewable energy.
In Australia’s National Electricity Market (NEM), a new battery output record of 1,531 megawatts (MW) was reached at 6:20 p.m. (AEST) on Wednesday, May 21, according to Geoff Eldridge from GPE NEMLog. This exceeded the previous weekly peak by 23 MW and nearly doubled the record of 784.3 MW set 19 months ago. This growth reflects a surge in battery storage projects joining the grid.
Australia installed the world’s first large battery at Hornsdale, South Australia, in 2017, but it has since been surpassed in total capacity by other regions.
In the United States, California and Texas now lead global battery storage capacity. In California, battery output surpassed the 10 gigawatt (10,000 MW) mark for the first time on May 20 at 7:20 p.m. local time, according to Grid Status.
These milestones highlight how battery storage is transforming power grids, enabling greater integration of renewable energy and supporting a cleaner energy future.
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