A growing roster of small modular reactors and microreactors is advancing through development in the United States, according to Energy Information Administration tracking. These smaller designs, which produce less power per unit than traditional large reactors, are drawing investment as utilities and technology companies seek new sources of reliable, carbon-free electricity.

The designs differ from the conventional fleet in scale and construction approach. Small modular reactors are intended to be factory-built in modules and assembled on site, an approach developers say can reduce construction time and cost compliance risk compared with large bespoke plants. Microreactors are smaller still, aimed at remote sites, industrial users, and specialized applications.

Deployment is beginning to move from design to construction. NuScale Power holds a certified design, and Kairos Power secured an early construction permit for an advanced reactor. TerraPower obtained its NRC construction permit and broke ground on its Natrium plant, while other developers including Oklo are pursuing sites at national laboratory locations.

Demand from data centers is reshaping the customer base. Large technology firms have signed agreements to secure future reactor output for AI computing campuses, linking the nuclear buildout directly to the growth in electricity-hungry data centers. The EIA data illustrates a pipeline that is broadening in 2026, with multiple designs at various stages of licensing and construction, marking a shift toward smaller, more modular nuclear generation across the US energy landscape.

Source: U.S. Energy Information Administration - https://www.eia.gov/todayinenergy/detail.php?id=67584