Nationwide production advanced 0.4 percent to 80,340 megawatts, or 79 percent of capacity, according to U.S. Nuclear Regulatory Commission data compiled by Bloomberg. Output was 5.4 percent less than a year ago with 19 of 104 reactors shut.
Wolf Creek 1, about 55 miles (88 kilometers) south of Topeka, operated at 28 percent of capacity today compared with 1 percent yesterday. The unit shut last week for repairs related to safety equipment and increased temperatures, according to Cassie Bailey, a spokeswoman at the plant.
The 315-megawatt gain led Western nuclear output higher by 2 percent to 15,752 megawatts, the biggest increase since May 5. Southeastern generation climbed 0.5 percent to 28,747 megawatts as Duke Energy Corp. (DUK) raised power to Brunswick 2. The 937-megawatt reactor near Wilmington, North Carolina, operated at 93 percent of capacity today, up from 52 percent yesterday.
Reactor maintenance shutdowns, usually undertaken in the U.S. spring or fall when energy use is lowest, may increase consumption of natural gas and coal to generate electricity. The average refueling down time was 46 days in 2012, according to the Nuclear Energy Institute.
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