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A photograph taken on March 4 by a drone shows the Gambit Energy Storage Park in Angleton, Texas. The utility-scale battery project is owned by a Tesla subsidiary.

A photograph taken on March 4 by a drone shows the Gambit Energy Storage Park in Angleton, Texas. The utility-scale battery project is owned by a Tesla subsidiary.

Photographer: Mark Felix/Bloomberg

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Tesla Is Plugging a Secret Mega-Battery Into the Texas Grid

The utility-scale battery located outside of Houston will connect to the same grid that faltered in February’s freeze

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Elon Musk is getting into the Texas power market, with previously unrevealed construction of a gigantic battery connected to an ailing electric grid that nearly collapsed last month. The move marks Tesla Inc.’s first major foray into the epicenter of the U.S. energy economy.

A Tesla subsidiary registered as Gambit Energy Storage LLC is quietly building a more than 100 megawatt energy storage project in Angleton, Texas, a town roughly 40 miles south of Houston. A battery that size could power about 20,000 homes on a hot summer day. Workers at the site kept equipment under cover and discouraged onlookers, but a Tesla logo could be seen on a worker’s hard hat and public documents helped confirm the company’s role.