I have no concept of units of electricity. So I tried to Google it to get some idea of how much power we are talking about. According to
this, the average household electric power demand in the US in 1997 was 10,219 kWh. So that's roughly what a typical house runs on in a year.
If this thing generates almost that much in an hour, then I'm floored. It just seems impossible to me. What am I missing? It's too good to be true.