Already works, you tie in your battery storage to lower costs. That already works. The problem here is 1) the excess power is not near the demand 2) the cost

Already works, you tie in your battery storage to lower costs. That already works. The problem here is 1) the excess power is not near the demand 2) the cost of electricity near the excess power is no lower than where there's no excess 3) nimbys prevent the extra interconnects being built which equalise power availability and power demand