Columbia nuclear power plant

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Other names: WNP-2, Energy Northwest Reactor No. 2

Columbia nuclear power plant is an operating nuclear power plant in Benton County, Washington, United States.

Project Details

Table 1: Unit-level project details for Columbia nuclear power plant

Unit name Status Commissioning year Nameplate capacity Reactor type Model Owner Operator
1 Operating[1] 1984[1] 1190 MW[1] Boiling water reactor[1] BWR-5 (Mark 2)[1] Energy Northwest [100%][1] Energy Northwest[1]
EPU Pre-construction[2] 2031 (planned)[2] 162 MW[2] Boiling water reactor[2] BWR-5 (Mark 2)[1] Energy Northwest [100%][1] Energy Northwest[1]

Table 2: Additional unit-level timeline details for Columbia nuclear power plant

Unit name Construction start First criticality (more info) First grid connection Commercial operation
1 August 1, 1972[1] January 19, 1984[1] May 27, 1984[1] December 13, 1984[1]
EPU – – – 2031[2]

Table 3: Additional unit-level capacity details for Columbia nuclear power plant

(Read more about nuclear capacity definitions.)

Unit name Reference net capacity Design net capacity Thermal capacity
1 1131 MW[1] 1100 MW[1] 3486 MWt[1]

Location

Table 4: Unit-level location details for Columbia nuclear power plant

Unit name Location Coordinates (WGS 84)
1 Benton County, Washington, United States[3] 46.4711, -119.3339 (exact)
EPU Benton County, Washington, United States[3] 46.4711, -119.3339 (exact)

The map below shows the exact location of the nuclear power plant:

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Articles and Resources

Additional data

To access additional data, including an interactive map of global nuclear power plants, a downloadable dataset, and summary data, please visit the Global Nuclear Power Tracker on the Global Energy Monitor website.

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 "PRIS - Reactor Details". pris.iaea.org. Archived from the original on 2022-11-26. Retrieved 2025-06-25.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 https://web.archive.org/web/20250628015543/https://www.energy-northwest.com/energyprojects/Columbia/Pages/Extended-Power-Uprate.aspx. Archived from the original on 2025-06-28. {{cite web}}: Missing or empty |title= (help)
  3. ↑ 3.0 3.1 https://web.archive.org/web/20240125091319/https://datasets.wri.org/dataset/globalpowerplantdatabase. Archived from the original on 2024-01-25. {{cite web}}: Missing or empty |title= (help)