But when the loads are low, the extra solar power goes into the batteries for using later and during the night time
Here people can sell that to the Electricity companies and then that amount gets adjusted when they use more from the Grid. So basically you store what you can, but then give the extra to them and borrow from them, when you need. Solar / electric vehicles are definitely going to save this world in near future.
Oh nice.. I hear its worth doing it some places. But where I live its not really worth selling back to the grid, as they have strict requirements and pay you only pennies on the dollar compared to what you pay for using their power.
They sure are, really cool seeing that stat about how far I can drive with all that power produced.