Tesla to build world's largest lithium-battery system

Tesla Inc.’s Elon Musk agreed to build the world's largest lithium-ion battery system in Australia.

Musk pledged to complete the project within 100 days of signing an agreement - or it will be free.

The 100-megawatt storage system is intended to help the state of South Australia deal with a series of blackouts over the past year.

Read more from The Wall Street Journal.

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