The license for the Columbia Generating Station, the Northwest's only commercial nuclear-power plant, has been extended for an additional 20 years.

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YAKIMA — The Nuclear Regulatory Commission has extended the license for the Northwest’s only commercial nuclear-power plant by an additional 20 years.

The license announced Wednesday extends operations at Columbia Generating Station through 2043.

The 1,150-megawatt plant north of Richland provides about 3 percent of the region’s power. That’s enough electricity for roughly 1 million homes.

The plant is operated by Energy Northwest, a public power consortium composed of 28 member utilities.