Batteries allow the solar array to maximize savings on the electric bill and provide backup power during grid outages. Every offgrid solar array includes a battery, but an increasing number of grid-tied customers find them valuable as well. Energy independence has never been easier to achieve – even when the home remains connected to the grid.
Are Home Batteries Worth It? Residential battery storage is necessary for a solar-powered home to remain operating during grid outages and will also work at night. But also, solar batteries improve system economics by storing solar electricity which would otherwise be sold back to the grid at a loss, only to redeploy that electricity at times when electricity is most expensive. Household battery storage secures the solar owner from grid outages and protects the system economics against changes in utility rate structures.