World’s largest battery facility started operations
Less than a month after Tesla unveiled a new backup power system in South Australia, the world’s largest lithium-ion battery is already being put to the test. And it appears to be far exceeding expectations: In the past three weeks alone, the Hornsdale Power Reserve has smoothed out at least two major energy outages, responding even more quickly than the coal-fired backups that were supposed to provide emergency power. Tesla’s battery last week kicked in just 0.14 seconds after one of Australia’s biggest plants, the Loy Yang facility in the neighboring state of Victoria, suffered a sudden, unexplained drop in output.
The effectiveness of Tesla’s battery is being closely watched in a region that is in the grips of an energy crisis. The price of electricity is soaring in Australia, particularly in the state of South Australia, where a 2016 outage led 1.7 million residents to lose power in a blackout. Storms and heat waves have caused additional outages, and many Australians are bracing for more with the onset of summer in the Southern Hemisphere.
The Hornsdale battery system, which uses the same energy-storage tech found in Tesla’s electric cars, is one of chief executive Elon Musk’s newest projects. In March, Musk, who is known for setting high goals and only sometimes meeting them, vowed on Twitter to deliver a battery system for South Australia’s struggling grid within 100 days or it would be free. By early July, the state had signed a deal with Tesla and the French-based energy company Neoen to produce the battery. And by Dec. 1, South Australia announced that it had switched on the Hornsdale battery. Fed by wind turbines at the nearby Hornsdale wind farm, the battery stores excess energy that is produced when the demand for electricity isn’t peaking. It can power up to 30,000 homes, though only for short periods — meaning that the battery must still be supported by traditional power plants in the event of a long outage.
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