Basic Facts:

  • Location: Rainier, Oregon
  • Owner: Portland General Electric Company
  • Total Construction Cost: $1.6B (2018$)
  • Total Plant Output: 1,130 MW
  • Property Size: 630 acres
  • Status: Decommissioned
  • Decommissioning Cost: $700M (2018$)
  • Operating License Termination: 2005
  • Spent Nuclear Fuel on Site: 542 tons
Trojan Photo


The Trojan Nuclear Plant was a single unit pressurized water reactor, rated at 1,130 MW, located on the banks of the Columbia River in northern Oregon. Plant construction began in 1970 with licensed operations beginning in 1976. The plant’s initial operating license was scheduled to expire in 2011 but in 1992 the plant was closed after cracks were encountered in steam generator tubing.


Plant decommissioning and demolition commenced in 1993 and was substantially complete by 2008. In 2003, all spent fuel had been transferred to on-site dry storage. The plant’s NRC license was terminated in 2005.


Trojan is located in Columbia County, Oregon. As of 2016:

  • Population: 52,000
  • Per Capita Annual Income: $42,000
  • Unemployment rate (not seasonally adjusted): 5.2%

Contact Information

Economic Development Administration Representative:

Economic Development District

University Center

Nuclear Regulatory Commission Contact (Spent Fuel Storage):

Unless specific costing information has been provided, decommissioning costs were derived from 2017 Decommissioning Funding Status Report.
Information herein obtained from public sources. Corrections are welcome and may be directed to [email protected].

Additional Information

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(802) 345-7044




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