What is the largest power station in the US?

At the moment, the largest operating nuclear generation station is Bruce Power Nuclear Generating Station in Ontario, Canada. It has 6 units online out of 8 and is producing 4,640 MW, two more untis are being restarted and when they come back online in 2010 the capacity for Bruce Power will be 7,276 MW. The largest nuclear reactor station ever constructed is the Kashiwazaki-Kariwa Nuclear Power Plant in Japan, but it was shut down in 2007 due to earthquake damage.