SMR

Small Modular Reactors (SMRs) are a widely discussed approach to nuclear power generation, appreciated for their potential simplicity and lower upfront costs. Rather than building one large facility, SMRs are designed to be manufactured in factories and assembled on-site. Their shorter promised deployment times attracted significant investment and government backing around the world.

One of the key arguments for SMRs is their scalability. Instead of committing to a single enormous plant, operators could theoretically deploy multiple smaller units, expanding capacity gradually as demand grows.However, real-world projects have struggled to deliver on these promises. The most advanced Western SMR project was cancelled in 2023 after costs nearly doubled, suggesting the challenges are more fundamental than expected.

The core issue is that SMRs still rely on steam turbines, limiting thermal efficiency to around 30 to 35%. At smaller scales, fixed costs become disproportionately expensive. Additionally, smaller reactor cores require higher-enriched fuels that are scarce and raise international security concerns. Meaningful progress will likely require a fundamental shift away from steam-based power generation entirely.