Be sure to have them read the fine print
My parents have solar panels on their house (I HATE it, 150 year old farmhouse, brick with red tile roof and those nasty black panels on it)
But, in the summer their meter runs backwards and all the excess power they produce goes back onto the grid
In the winter it runs clockwise again, but not nearly as fast and according to my dad he's been breaking even and has not paid for electricity in years
