With Oncor’s 5,000 megawatt project on hold, most of the attention in the U.S. energy storage industry is focused on California, where the state government has ordered the construction of 1,300 megawatts of electrical storage devices by 2020. Already high power prices there are driving adoption, with more than 130 installations — the most in the country by a long shot, according to the U.S. Department of Energy. Texas is second, with 22 installations.

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