1 April 2009 — Total nuclear generation reached a new high of 808.97 million MWh in 2008, up from 806.49 million MWh generated in 2007, according to preliminary Energy Information Administration data.
Nuclear power made up 19.7 percent of U.S. electricity generation in 2008. That was up from 19.4 percent in 2007.
Illinois led the nation in nuclear generation in 2008, but the biggest gains were experienced in two Southern states: Alabama, which generated 5.3 million MWh more electricity from nuclear than in 2007 (a 15 percent increase), and Florida, which generated 3.0 million more MWh, a 10 percent increase.
Generation declined in 15 of the 31 states with nuclear capacity, with the biggest drop coming in California. California's output was nearly 11 percent lower than in 2007, a drop of 3.8 million MWh. Kansas saw the second-largest drop, 1.9 million MWh, or 18 percent.
Monthly and annual generation by state and by reactor through 2008 is available here.