Your cousin is blowing smoke up your butt, math don't workPerfect scenario. Probably wouldn't work in several days of very dark in a row, but would have got him through a day or two until some minimal sun or the power comes back on. He didn't buy it to go off-grid, just to even out their frequent several hour power outages. They have buried power lines too so I don't know why his power goes out all the time.