The Nuclear Regulatory Commission has granted approval to TerraPower to begin construction of a reactor in Wyoming. The project is the first new US commercial nuclear reactor in about a decade, according to The New York Times. TerraPower was founded by Bill Gates, and it took years for the business to receive regulatory approval for this construction effort.

TerraPower is part of a push to create more efficient and less expensive nuclear facilities as an alternative power source, particularly as AI companies and data center construction places more demands on the US’ current infrastructure. TerraPower’s project involves tech it has dubbed Natrium in its planned reactor. Using this liquid sodium approach rather than a traditional light-water reactor is part of how the company aims to reduce costs and time frames.

Advocates see nuclear reactors as a way to generate power without the climate impact of coal or gas plants. Critics point to the safety risks as a severe downside to this approach, while others question whether the creation and disposal of nuclear waste counter the environmental gains. The Gates-backed operation still isn’t coming in cheap. The proposed facility could cost at least $4 billion and still faces logistical challenges before coming online as planned in 2031.