Batteries are currently about 1000× too expensive, because (a) you realistically need seasonal storage for when the wind/sun are both weak, so about 30 * 24 Wh

Batteries are currently about 1000× too expensive, because (a) you realistically need seasonal storage for when the wind/sun are both weak, so about 30 * 24 Wh/W, and (b) you need around 2× the otherwise needed generation capacity to charge those batteries.