Next-Generation Nuclear: Small Modular Reactors Are Getting Real
Small modular reactors — compact, factory-built nuclear plants that can be deployed in years rather than decades — are promising to change the economics and politics of nuclear energy. In 2026, the first commercial SMRs are being connected to national grids around the world, marking a major milestone for clean baseload power.
What Makes SMRs Different
SMRs are designed to be built in factories, shipped in modules, and assembled on-site in 3 to 5 years. Their smaller size of 50 to 300 MW means they can serve isolated grids, industrial sites, or remote communities. Their modular design enables passive safety systems that shut down the reactor using physics alone, without requiring operator action or external power.
Who Is Building Them
Romania and Poland have signed contracts with NuScale for their first plants, with construction beginning in 2026. The UK's Great British Nuclear programme selected Rolls-Royce's SMR design for multiple UK sites, targeting first power by 2030. China has connected its first pebble-bed reactor to the grid. The IAEA estimates 80 SMR designs are in development globally, with 20 in active licensing or construction.
Tags: Small Modular Reactors | Nuclear Energy | Clean Power | NuScale | Rolls-Royce SMR | Net Zero
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