Energy from the sun is converted into DC current by solar panels, which is then inverted to the AC current used in your home.
Grid-Tied Solar: Energy on Demand,
Excess Sold Back to the Grid
It sounds simple: Energy from the sun is converted into electricity by solar panels, where built-in inverters convert DC current to the AC current used in your home or business. But there's more to it than that . . .
About Net Metering
During daylight hours, excess energy produced by your system is sent back to the grid. At night and times of low light, you use energy from the grid. You only pay for—or are credited—the difference.
With an optional battery backup, if a power outage occurs, your batteries will supply energy to all or parts of your home.