U.S. Residential Energy Storage Market Hits New Highs in Q1 2018

BOSTON, Mass. and WASHINGTON D.C. (Jun 6, 2018) -- Deployments of home energy storage systems reached record heights in the first quarter of 2018. According to the latest U.S. Energy Storage Monitor report from GTM Research and the Energy Storage Association (ESA), 36 megawatt-hours of grid-connected residential energy storage systems were deployed in the first three months of this year, which is equivalent to the amount of residential storage deployed in the previous three quarters combined.

FIGURE: U.S. Quarterly Residential Energy Storage Deployments (MWh)

Source: GTM Research / ESA U.S. Energy Storage Monitor

The report notes that California and Hawaii together constitute 74 percent of residential deployments on the quarter. “Changing net-metering rules and increasing customer interest in backup and solar self-consumption drove the residential energy storage market’s record quarter,” said Brett Simon, senior analyst at GTM Research and project manager for the U.S. Energy Storage Monitor report. “More solar installers are offering residential storage products than ever before and see residential storage as an important area of business growth, particularly as utilities implement time-of-use rates and reduce net-metering compensation. These policy trends are expected to continue as utilities and regulators work to deal with increasing levels of solar PV penetration, which are driving increasing residential storage demand.

Several residential solar installers already claim storage attachment rates for new solar PV of up to 20 percent in select regions such as southern California, indicating a strong market for the technology.”

Residential storage systems made up 28 percent of all deployed megawatt-hours on the quarter, a record for the segment, but second behind the front-of-the-meter segment which accounted for 51 percent of deployments. The non-residential segment experienced a quiet quarter with 21 percent of megawatt-hours deployed, though nevertheless this segment almost tripled year-over-year.

In total, 126 megawatt-hours of energy storage were deployed across all segments during the first quarter of the year. This is up 26 percent over the fourth quarter of 2017, but down 46 percent year-over-year. However, the analysts at GTM Research cite Q4 2016 and Q1 2017 as “anomalies” due to the Aliso Canyon deployments during those quarters.

“With the U.S. energy storage market demonstrating a continued upward growth trajectory in the first quarter of 2018, the industry is moving closer to its vision of 35 GW of new energy storage installations by 2025,” said Kelly Speakes-Backman, CEO of ESA. “The growing list of states and markets ready to take action and remove barriers to cost-effective energy storage deployment promises the remainder of 2018 will yield similarly positive results.”

New this quarter, the U.S. Energy Storage Monitor adds Colorado and Nevada to its growing list of markets covered on a quarterly basis. Additional markets covered each quarter include Arizona, California, Hawaii, Massachusetts, New Jersey, New York, PJM and Texas.

Key Findings from the report include:

  • 35.8 MWh of residential storage were deployed in Q1 2018.
  • The U.S. energy storage market grew 26% QOQ, from 100.2 MWh in Q4 2017 to 126.3 MWh in Q1 2018.
  • Year-over-year, the market declined 46%. Q1 2017 saw multiple long-duration systems deployed under the Aliso Canyon program, which led to a record in MWh terms.
  • Behind-the-meter deployments accounted for 49% of deployments in MWh terms.
  • GTM Research forecasts that annual residential energy storage deployments will surpass 1,000 megawatt-hours in 2020.

Download the report’s free executive summary, or purchase the full report here.

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About U.S. Energy Storage Monitor Delivered quarterly, the U.S. Energy Storage Monitor is the industry’s only comprehensive research on energy storage markets, deployments, policies and financing in the U.S. These in-depth reports provide energy industry professionals, policymakers, government agencies and financiers with consistent, actionable insight into the burgeoning U.S. energy storage market. www.energystoragemonitor.com


About GTM Research GTM Research is now Wood Mackenzie. We provide critical and timely market analysis in the form of research reports, data services, advisory services and strategic consulting. GTM Research's analysis also underpins Greentech Media's webinars and live events. Our coverage spans the green energy industry, including solar power, grid modernization, energy storage and wind power.