Next-gen nuclear

New reactors use novel materials and compact designs to make nuclear power safer and cheaper.

Nuclear power has been part of the electricity grid for decades, but older reactor designs—often delayed and over budget—are due for a refresh. Next-generation nuclear reactors are smaller, simpler to build, and use new materials to deliver steady power. As electricity demand rises from electric vehicles, air conditioning, and data centers, these designs could help make the grid more flexible and resilient.

There is no single dominant approach. Some companies are developing microreactors with far lower output, while others are exploring molten-salt or metal coolants to avoid the extreme pressures used in today’s reactors. In 2024, Kairos Power received the first US approval to build an electricity-producing next-generation reactor. The key challenge now is scaling these technologies affordably.

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