Nearly a decade ago, when the energy storage market was in its infancy, an industry organization set a dreamy goal: By the end of 2025, the U.S. would deploy 35 gigawatts of batteries connected to the grid.

So how’d the storage industry do? In the third quarter, 4.7 gigawatts of batteries were installed. In sum, more than 40 gigawatts have been deployed, and the year isn’t over, Canary Media reported . In eight years, energy storage went from a tiny player to one of the largest sources of new power on the U.S. grid.

What’s more, that’s nearly half of all new renewable power deployed on the grid for July through September, and this year, renewables have been the leading source of all new capacity, according to the Federal Energy Regulatory Commission.

Much of the new storage capacity

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