The US Nuclear Regulatory Commission on Wednesday approved its first construction permit for a commercial nuclear reactor in eight years, one that will allow a Bill Gates-backed company to build a sodium-cooled reactor in western Wyoming. TerraPower filed for the permit in 2024 and construction is now set to begin within weeks, reports the AP. Completion of the up to $4 billion plant is targeted for 2030, according to TerraPower. Microsoft co-founder Gates, who is eyeing nuclear generation as a power source for the electricity-hungry data centers behind artificial intelligence, is a founder of TerraPower and its primary investor. "We have spent thousands of manpower hours working to achieve this momentous accomplishment," TerraPower President and CEO Chris Levesque said in a statement.
The TerraPower plant is set to be built near a coal-fired power plant that is being converted to burn natural gas outside Kemmerer, a town of about 2,500 some 130 miles northeast of Salt Lake City. TerraPower's 345-megawatt reactor is expected to produce up to 500 megawatts at its peak, enough energy for some 400,000 homes. The reactor construction permit is the NRC's first approval for a non-light-water commercial reactor in more than 40 years, the NRC said. The TerraPower reactor would use molten sodium, not water, as a coolant. The last commercial non-light-water reactor in operation in the US was the Fort St. Vrain nuclear plant in northern Colorado. The problem-plagued, helium-cooled plant produced electricity from the mid-1970s until it was shut down in 1989.
In October, Gates told reporters he thinks nuclear power will be a "gigantic contributor" to powering data centers. He had recently met with Energy Secretary Chris Wright, Interior Secretary Doug Burgum, and various members of Congress and said the government was "very involved" in the TerraPower reactor. "I wish I could deliver nuclear fission like three years earlier than I can, because then we'd have a perfect match to the current demand pattern of these data center guys," he said.
While the Trump administration pushes toward nuclear power, the federal government has yet to address the thousands of tons of spent fuel that have been piling up for decades at nuclear plants nationwide. New Mexico and Texas have dug in their heels to keep from becoming dumping grounds in the absence of a permanent solution. In January, the Department of Energy announced it was taking what it called a first step toward possible partnerships with states to modernize the fuel cycle, including reprocessing spent fuel and disposing of waste. The agency gave states until April 1 to step forward if they're interested in participating.
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