In tennessee the tennessee Valley authority has an application process for putting power back into the grid. Which includes changing the meter on your house to show what's pulled in and put back.

But they limit you to 12 panels on your house. Loop hole to that being you can add 2nd meter to your address. Which would then most likely allow an extra 12 panels. But for this house and it's 1 meter 1 fuse box we are maxed.

We opted out of putting back instead set it up to supplement what we use. Lowering our power bill bout 100+ a month.