Energy Storage Could Be Residential Solar’s Next Growth Product

Residential solar installers are quietly starting to expand their offerings to include energy storage, which could be a much-needed revenue boost for the industry. Tesla‘s Powerwall is the best-known energy storage device, but SunrunSunPower, and Vivint Solar are entering the market as well, and they’re seeing some signs of success early in 2018.

What’s great about energy storage for solar installers is that it’s incremental revenue that leverages existing marketing and sales expenses. And it could help make solar more attractive to customers in states that have made it more difficult to justify solar economically. 

Sunrun has given the most information about how many energy storage systems it’s selling with residential solar systems in the U.S., and the early numbers are impressive. During the company’s first-quarter 2018 conference call, CEO Lynn Jurich said, “We launched Brightbox in Massachusetts less than three months ago, and already nearly 10% of the time customers we sell to directly are opting to add a battery.”  She added, “In California, over 20% of the time our direct customers are choosing to add a Brightbox. In certain markets in Southern California, this rate is now above 50%”

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