A nuclear power renaissance—driven in part by power-hungry AI data centers—has revived a thorny problem: what to do with the radioactive waste left behind. Already, more than 90,000 metric tons of spent nuclear fuel is being stored at sites in 39 states. These include 73 commercial nuclear power plants and more than three dozen university and government facilities, according to a 2024 report by the Pacific Northwest National Laboratory…Meanwhile, nuclear reactors continue to provide almost 20% of U.S. electricity and produce about 2,000 metric tons of waste each year. As additional plants become available to meet the demands of data centers, industrial plants, homes and electric vehicles, the waste pile is poised to grow even more.  The US first new reactors in three decades were completed last year in Georgia. Plans are in the works to reopen closed reactors in Michigan, Iowa, Pennsylvania and South Carolina…

France generates 70% of its electricity from nuclear energy, recycles about 96% of its waste into new fuel and stores the remainder in a centralized cooling pool in Normandy. French officials expect to start construction in 2027 on a permanent underground repository in northeastern France to open by 2035.  In November 2025, Canadian officials selected a permanent site for nuclear waste to be dug out of bedrock in northwestern Ontario. But U.S. efforts stalled decades ago, when a $15 billion project to build a permanent, underground storage facility at Yucca Mountain, Nevada, was halted amid opposition by elected officials in the state. The Yucca Mountain failure cast a shadow over efforts to build a permanent disposal site, according to interviews with nuclear experts, policymakers and elected officials. 

Excerpts Eric Niiler, Nuclear Power’s Revival Is Here. What Do You Do With All the Radioactive Waste?, WSJ, Mar. 5, 2025