Around the world, more homeowners are experimenting with residential batteries, which grab energy when it is generated and store it for later use. The batteries are getting increased attention as solar power becomes more affordable and common in the U.S.Today, however, the financial benefits for most Americans are still as meager as the interest generated on that savings account. Batteries typically cost thousands of dollars, and one may not be large enough to power an entire home. That means homeowners who have solar power have to either consume it or store it. He got the unit as part of a program offered by Green Mountain Power, his local utility.

Source: Wall Street Journal May 22, 2017 02:02 UTC