Columbia nuclear power plant

Columbia nuclear power plant in context

By gross operating capacity Columbia nuclear power plant is the 43rd largest of 54 operating nuclear sites in the United States, holding 1% of the country's operating capacity, and ranks 136th of 172 worldwide.

Its operating unit started up in 1984; the unit is 42.0 years old, younger than the median of 45.0 in the United States.

The one unit with both construction and grid dates on record took 11.8 years from construction start to grid connection; the median across all reactors connected in the 1980s is 7.3 years.

No other nuclear site with an exact position in this dataset lies within 300 km.

The current net rating of Unit 1 differs from its design net capacity by +2.8% (1,100 MW at design, 1,131 MW now).

Build time by unit

How these are worked out: ranks use gross operating capacity; ages count from the start-up year on record, as on the age page; build times run from construction start to grid connection, as on the build-times page; ratings are the tracker's net and design net capacity, as on the uprates page. Distances are straight-line between exact positions, so a site with only an approximate position gets none. A unit missing a date or a rating is left out of the figure that needs it.