Regulatory bottlenecks and practical fixes
Deployment of small modular reactors (SMRs) is slowed more by regulatory processes than by technology in many countries. Experts such as Jacopo Buongiorno of Massachusetts Institute of Technology emphasize that predictable, repeatable approval pathways and early design-certification reduce cost and investor risk. The U.S. Nuclear Regulatory Commission and other national regulators can accelerate deployment by adopting streamlined licensing that separates factory certification from site-specific approvals, expands pre-application design reviews, and establishes clear timelines for regulatory decisions. Such predictability lowers the financing premium that has hindered past nuclear projects.
Risk-informed, performance-based rules
Shifting from prescriptive rules to risk-informed, performance-based regulation would let regulators focus resources on safety-significant functions rather than legacy requirements designed for large reactors. Mark Holt of the Congressional Research Service has described how graded oversight tailored to smaller, inherently safer designs shortens review cycles. Changes could include acceptance of probabilistic risk assessments for emergency planning, clearer criteria for reduced exclusion zones for passive-cooling designs, and regulatory acceptance of modular factory quality assurance programs. These measures preserve safety while recognizing different failure modes of SMRs.
International harmonization and supply-chain certification
Harmonized standards across jurisdictions and mutual recognition of design certifications would reduce duplication and enable factory manufacturing at scale. Institutions such as the International Atomic Energy Agency provide guidance on multinational approaches to licensing and safeguards that can be adopted by national regulators to ease cross-border deployment. Design standardization combined with internationally recognized certification speeds export and supports global supply chains, with positive economic and environmental implications for regions seeking low-carbon baseload power.
Societal, territorial, and environmental considerations
Regulatory change must integrate public engagement, Indigenous and local territorial rights, and transparent waste-management expectations. Environmental benefits from lower operational emissions are weighed against long-term waste stewardship and siting impacts on communities. Regulators that require early and genuine community consultation, clear decommissioning funding rules, and culturally aware decision processes increase social license and reduce litigation delays.
Adopting graded licensing pathways, risk-informed criteria, international harmonization, and robust community frameworks would materially accelerate SMR deployment while maintaining safety and environmental protection.