Originally Posted by
kimini
I'm just starting my education and understand just enough to be really dangerous...
I know that once a year, PV system users have a "truing up" billing, where the balance is paid off between them and the utility. If you used more than you made you own them $X. If you made more than you used, they owe you, but here's the big catch. The amount they pay you per kWh is somewhere around $0.027, yup, 2.7 cents. It's so close to zero that it's a big reason to not oversize a PV system. That said, there's always future additional uses, an electric car is a big one, typically upping usage by 20-50%.
I know I didn't really answer your question, because I'm not sure. Still reading to better understand just that.