My utility gives a 50% credit on excess generation. Thing there is the utility is still the one taking responsibility for having the capacity and scalability to respond to variation in demand and production. When I was getting quotes, adding storage would have doubled the cost of the system for a day or two worth of storage. Probably would cost double again to have a system that would keep up through the winter.

Yeah we get nothing from any excess power generation that goes back into the grid. It used to be worth it years and years ago but they stopped because it was costing the energy generators too much.