DescriptionCommissioned in response to a series of South Australian blackouts and grid-stability issues in 2016-2017, Hornsdale demonstrated that lithium-ion batteries could respond to frequency disturbances roughly 100 times faster than conventional gas 'peaker' plants, prompting Australia's electricity market operator to create new, faster-responding ancillary service categories. Its early commercial success helped catalyze a wave of grid-scale battery investment worldwide; the facility has since been expanded well beyond its original 100 MW capacity.
Formal questionThe Hornsdale Power Reserve in South Australia, a 100 MW / 129 MWh lithium-ion battery installation built by Tesla and commissioned in December 2017, was among the first grid-scale batteries to demonstrate sub-second (sub-200-millisecond) automated response to grid frequency deviations at commercial scale, and was built within 100 days per a public commitment made by Elon Musk.
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