The 36 megawatt-hours of residential energy storage installed in the United States during Q1 is the latest in a year of accelerating growth rates, driven by policies in California and Hawaii.

As reported by EnergySage, 74% of residential solar power customers have an interest in energy storage. And while one can always debate whether expressing interest in a poll will ever turn into actual money being spent, this is not the only data point. In May, Arizona’s Salt River Project Water and Power launched a residential energy storage incentive with 4,500 spots available. With only one month elapsed since then, there are now 2,097 reservations remaining.

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This trend appears to be reflected nationally. GTM Research and the Energy Storage Association’s Q1 2018 US Energy Storage Monitor shows 35.8 megawatt-hours (MWh) of grid connected residential energy storage installed in the United States during the first quarter of 2018.

Read more: PV Magazine USA