Tesla’s Battery Revolution Just Reached Critical Mass
Three new plants in California show how lithium-ion storage is ready to power the grid.
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Tesla Motors Inc. is making a huge bet that millions of small batteries can be strung together to help kick fossil fuels off the grid. The idea is a powerful one—one that’s been used to help justify the company’s $5 billion factory near Reno, Nev.—but batteries have so far only appeared in a handful of true, grid-scale pilot projects.
That changes this week.