Fueled by increased interest in grid service applications like time-of-use (TOU) shifting, self-consumption and backup power, the U.S. market for energy storage doubled in 2018 and is expected to double again by the end of the year.

Of the 777 MWh of energy storage deployed in the United States in 2018 (which was an 80% growth over 2017 installs), 47% came from front-of-the-meter (FTM) projects, or those built and operated by utilities. Behind-the-meter (BTM) storage systems, including residential, accounted for the other 53% of installations, and a report from Wood Mackenzie Power & Renewables and the Energy Storage Association (ESA) predicts BTM storage to account for more than half of the annual market in dollar terms by 2021 as residential storage takes off. The groups expect 2019 to close with 1,681 MWh of energy storage deployed in the United States, largely coupled with solar systems.

PowerBanx SX home storage (Image: SolaX/Tanjent)

PowerBanx SX home storage (Image: SolaX/Tanjent)

Zachary Cox, VP of operations at U.S. Battery Manufacturing, said he sees FTM projects becoming the predominant energy storage application in the future.

“I imagine a system where homes and businesses generate solar power during the day to charge utility-owned storage and then consume from that storage at night,” he said. “I still envision residential and commercial behind-the-meter storage; however, I think that the upfront costs of these systems will push utility providers to provide the storage.”

Read more: Solar Power World