Across the Ohio river in Paducah, Kentucky, the Paducah Gaseous Diffusion Plant, can enrich the uranium hexafluoride into various levels for nuclear power or nuclear weapon purposes.
USEC ceased enrichment operations at the Portsmouth Gaseous Diffusion Plant in May 2001 after it consolidated operations at the Paducah Gaseous Diffusion Plant in Kentucky.
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The Portsmouth plant, so named because of its proximity to the city of Portsmouth, Ohio, was one of three gaseous diffusion plants in the United States, alongside the K-25 plant in Oak Ridge, Tennessee and the Paducah Gaseous Diffusion Plant in Kentucky.
Before its downsizing and final cessation of uranium enrichment on May 31, 2013, the Paducah Gaseous Diffusion Plant consumed about 3,000 megawatts of electricity at peak operation.
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K-25 was the prototype for later Oak Ridge gaseous diffusion facilities and those at Paducah, Kentucky and Portsmouth, Ohio.