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US approves bigger nuclear reactor design for NuScale, document says

A document posted on the regulator's website on Thursday said that the U.S. Nuclear Regulatory Commission had approved NuScale Power’s design for a 77-megawatt reactor. This is the final hurdle to be cleared by the company before it can build a modular small reactor.

NuScale originally requested and received NRC approval of a smaller reactor design. The company wanted a larger 77 MW design in order to improve the economics and performance for its planned small modular nuclear reactors (SMRs).

Supporters of nuclear energy say SMRs are safer against proliferation risks, and they can reduce costs because multiple plants can be built at a factory rather than on-site. SMR critics claim that they are more expensive to run than conventional reactors because of their size and economies of scale.

NuScale is the only U.S. firm with a design that has been approved. They want to build the first SMR in the United States. In 2023, it cancelled its first project in Utah with a local power group, despite the US government promising to fund the plant for $1,35 billion over 10 years. As the costs increased, several towns pulled out of this project.

(source: Reuters)