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U.S. Leads Small Modular Nuclear Reactor Development With 28 Sites
The U.S. has 28 small modular nuclear reactor siting announcements as of 2026, more than the next four countries combined, according to ZeroHedge analysis.
The United States leads global small modular nuclear reactor development with 28 siting announcements as of 2026, more than the next four countries combined, according to ZeroHedge analysis of Nuclear Energy Agency data published July 1, 2026.
National laboratories lead U.S. siting announcements with seven projects, followed by a three-way tie among utilities, universities, and small modular nuclear reactor developers with five projects each, according to the source.
Key Takeaways
The U.S. has 28 small modular nuclear reactor siting announcements as of 2026, according to ZeroHedge analysis of Nuclear Energy Agency data.
National laboratories lead U.S. siting announcements with seven projects, followed by utilities, universities, and developers with five each.
Small modular nuclear reactors can produce up to 300 MWe, far less than traditional reactors that typically produce 1,000–1,400 MWe.
The Nuclear Energy Agency tracks 129 small modular nuclear reactor designs, with 78 publicly reported and the rest either requesting exclusion or not under active development.
Table of Contents
U.S. Small Modular Nuclear Reactor Development
What Are Small Modular Nuclear Reactors
Why Small Modular Reactors Matter
What Remains Unclear
U.S. Small Modular Nuclear Reactor Development
The United States has 28 small modular nuclear reactor siting announcements as of 2026, more than the next four countries combined, according to the ZeroHedge report. The source does not identify the next four countries by name or provide their individual siting announcement totals.
National laboratories lead U.S. siting announcements with seven projects, followed by a three-way tie among utilities, universities, and small modular nuclear reactor developers, each with five siting announcements, according to the source. The report does not provide further detail on project timelines, financing, or regulatory status.
The Nuclear Energy Agency tracks 129 small modular nuclear reactor designs globally, with 78 publicly reported in the digital dashboard as of 2026. The remaining designs have either requested not to be included or are not under active development, according to the source.
What Are Small Modular Nuclear Reactors
Small modular nuclear reactors are a clean-energy technology that are cheaper and more flexible than traditional nuclear power generation, according to the source. The technology is defined by three key characteristics, according to the report.
Small modular nuclear reactors can produce up to 300 megawatts electric, far less than traditional reactors, which typically produce around 1,000 to 1,400 megawatts electric, according to the source. The reactors are designed for mass factory manufacturing to reduce cost and build time. The source identifies four main reactor types: light water reactors, fast neutron reactors, graphite-moderated high temperature reactors, and molten salt reactors.
The compact, modular design enables easier transport and deployment ideal for data centers or remote sites where grid connection is costly or unnecessary, according to the report.
Why Small Modular Reactors Matter
As electricity demand accelerates, small modular nuclear reactors are becoming an increasingly important part of conversations around grid reliability, energy security, and clean firm power, according to the source.
For utilities and policymakers, tracking where these projects are emerging can help inform planning, policy, and long-term strategy, the report states. The source does not provide specific financial projections, cost comparisons, or market adoption timelines.
For readers following broader market updates , small modular nuclear reactor development can help frame the energy transition context and the role of advanced nuclear technology in meeting rising electricity demand.