> In my experience US power companies hate crediting pushback to the grid because it all happens at the same time during peak sunlight hours and then customers get to use those credits at night and during the winter which the power company thinks is unfair.

I'm pretty sure PG&E pays back something like only 5% of the generation of my solar panels. I'll end the year with $400 more generated than used, and I'll get a check for $20...