Huge order for Tesla: construction of grid battery with 450 MWh capacity started in Australia

In the fourth quarter of 2020, the newly installed capacity of stationary Tesla storage batteries exceeded the one gigawatt hour mark for the first time – it rose to around 1.6 GWh of power walls for households as well as larger power packs and huge megapacks for companies and increasingly utilities. In the fourth quarter a year earlier, Tesla had sold 530 megawatt hours of stationary battery capacity. And a single other order that became known this week has almost the same volume.

Tesla storage with 450 MWh

It comes from the energy company Neoen, which operates the Hornsdale Reserve plant in Australia with battery technology from Tesla. Initially it was the largest lithium-ion storage system in the world and was also increased last year to 150 megawatts and 193.6 megawatt hours of capacity.

Neoen announced in autumn 2020 that the next project in Australia would soon be twice as big: a Victorian Big Battery to stabilize the power grid in the state. At that time, the company named an output of 250 megawatts, and in a current communication on financing, even 300 megawatts are sometimes given. Neoen puts the capacity of the Big Battery at 450 megawatt hours, almost as much as Tesla storage systems were installed worldwide in the fourth quarter of 2019.

Megapacks for massive batteries

With these values, the Victoria battery will be one of the largest in the world, writes Neoen. Construction has already started and the project should be completed before the next Australian summer (end of December 2021). A government company is providing 160 million Australian dollars (around 100 million euros) as a loan.

Neoen says it has signed a contract to protect network integrity that runs until 2032. With the help of the Big Battery, 250 megawatts of additional peak capacity are to be created on an existing interconnector line between the states of Victoria and New South Wales. Tesla is named as a partner several times in the announcement, but the project is said to be operated by Neoen and will remain in his possession. Given its size, megapacks are likely to be Tesla’s largest stationary storage system.


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