i just went out back to check my inverter earlier today, nice sunny spring day, about 70f, my 760w DC array was outputting 699w _AC_ from the inverter! i think it wasnt quite solar noon. so as i recall the inverter was about 93% efficient so im guessing the array was higher watts in DC. (not sure if i can see that on the inverter , havent played with it much). wow, my sharps dont get that kind of efficiency!