Question: how much energy does fission produce?
Answer: One fission event results in the release of about 200 MeV of energy, or about 3.2 ´ 10-11 watt-seconds. Thus, 3.1 ´ 1010 fissions per second produce 1 W of thermal power. The fission of 1 g of uranium or plutonium per day liberates about 1 MW.