400ワードをオーバーしていたら、できるところまでお願いします。 That said, Tesla has expanded far beyond the boundaries of automaking, and now produces battery systems for solar and grid power storage, as well as solar panels and solar roof tiles. Tesla also just landed a contract to build the world's largest battery system in Australia, in which he has 100 days to build 100 megawatts of storage, or it's free. The system would be able to power 30,000 homes in the event of a blackout.