There are some chicken farms up here that have loads of solar panels on the roof. I was talking with a chicken grower last week, whose neighbor down the road had them on his houses. He said that in December the guys total power bill for his dwelling house and chicken houses was less than $200. He said that in warmer weather the guy produced a surplus of power and that TVA paid the guy the RESIDENTIAL rate for any surplus power generated. There was a scenario in there where after a certain point or amount that they paid him a wholesale price for the power.

I found it interesting that the guy didn't technically use the power he generated. The solar panels fed directly back into the main TVA sourced line and there was a meter on it that showed how much was generated. In other words, all power generated by the solar panels went out. He has a meter going in using TVA power, and a meter going out measuring what "he" made. He paid the difference, or was refunded the difference depending on which meter was ahead.

If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then will I hear from heaven and will forgive their sin and will heal their land. 2 Chronicles 7:14