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U.S. Nuclear Plants



Byron Illinois
  
Unit 1 Nuclear system supplied by Westinghouse Electric Corporation
Capacity
Net MW(e)
Generation
in 2003
Megawatthours
Capacity
Factor
Type
On-line
Date
License
Expiration Date
1,194
9,855,738
94%
PWR
Feb. 14, 1985
Oct. 31, 2024
Unit 2 Nuclear system supplied by Westinghouse Electric Corporation
Capacity
Net MW(e)
Generation
in 2003
Megawatthours
Capacity
Factor
Type
On-line
Date
License
Expiration Date
1,162
10,286,514
100.8%
PWR
Jan. 30, 1987
Nov. 6, 2026
PWR=Pressurized Light Water Reactor

Description:  The Byron plant contains two light water reactors.  It is located in Ogle County, Illinois.

Ownership: Byron Nuclear Power Station is owned and operated by Exelon.  Commonwealth Edison and PECO are subsidiaries of Exelon Corp.

The Impact of the Nuclear Industry on Illinois:
  • News item: Illinois State Archives (how Illinois became a pioneer in regulating nuclear power)
  • Highlights
  • Nuclear-provided Electricity Generation
  • Competition in the State Electricity Market
  • Environmental Trends: Emissions levels
  • Various Links to related sites.
Sources: 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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Release Date: August 4, 2004
Next Release Date: September 2005


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