Description: The Kewaunee nuclear plant occupies a 900-acre site in Carlton, Wisconsin, about 35 miles southeast of Green Bay.  Management of the site was consolidated with the Point Beach units.  Kewaunee was the fourth nuclear plant built in Wisconsin, and the 44th built in the United States.  In June 2005, the plant was acquired by Dominion from its previous owners, Wisconsin Public Service Corporation and Alliant Energy.  The Virginia-based company owns the North Anna and Surry plants in its home state, and acquired one other out-of-state plant, Millstone (in Connecticut). 

In 2004, the Kewaunee plant's capacity factor (the ratio of the amount of electricity actually produced to the maximum potential output) was 81.8 percent. In 2005, it declined as a result of the unit being taken off-line to correct a discovered design weakness in the plant's auxiliary feed-water system. The reactor was taken off-line on February 21, 2005, and returned to service in July after NRC concluded the problem has been corrected.

Kewaunee, Unit 1
                       
Nuclear Steam System Supplier (NSSS Vendor) = Westinghouse Electric 
Architect Engineer = Pioneer Services & Engineering
Owner = Dominion Generation
Operator (Licensee) = Dominion Generation

Containment: According to the U.S. Nuclear Regulatory Commission, containment type for Kewaunee’s reactor is dry, ambient pressure^[1].

Pressurized Light Water Reactor

Sources for Data in the Table: Capacity, for purposes of this report, is the net summer capability as reported in Energy Information Administration (EIA) survey form 860, "Annual Electric Generator Report." Capacity Factor is a calculation in which the maximum possible generation (based on net summer capability) is divided into the actual generation than multiplied by 100 to get a percentage. Generation is the electricity output reported by plant owners on EIA survey form 906. Type of Unit: All U.S. commercial reactors currently in operation are one of two types: BWR (boiling water reactor) or PWR (pressurized light water reactor). The type is identified in EIA's Nuclear Power Generation and Fuel Cycle Report. Both the On-line Date and the License Expiration Date are reported annually in Information Digest by the U.S. Nuclear Regulatory Commission.

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^[1]Dry, Ambient Pressure: a reactor containment design whose safety has been evaluated on the basis of having a dry air atmosphere at ambient pressure (0 psig) prior to the onset of a loss of coolant accident or steam pipe break. The containment design (concrete and steel tendons) must be able to take the full thermal and pressure stresses associated with the rapid energy release (steam) from a major pipe break.

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