75% isn't great, but if solar continues its 70 year exponential trend of dropping by half every 3-4 years for another two decades, then round-trip efficiency may not much matter in the long run. Too, the 75% is at 100%…
75% isn't great, but if solar continues its 70 year exponential trend of dropping by half every 3-4 years for another two decades, then round-trip efficiency may not much matter in the long run. Too, the 75% is at 100%…