---
title: Small Modular Reactors (SMRs)
type: technology
url: "https://www.envisioning.com/research/meridian/small-modular-reactors"
hub: meridian
summary: Factory-built nuclear reactors designed for flexible, distributed power generation
---

# Small Modular Reactors (SMRs)

Factory-built nuclear reactors designed for flexible, distributed power generation
- Technology Readiness Level: 7/9
- Impact: 5/5
- Investment: 5/5
Small Modular Reactors represent a paradigm shift in nuclear energy generation, offering compact, factory-fabricated nuclear power units typically designed to produce between 50 and 300 megawatts of electricity—significantly less than conventional nuclear plants that often exceed 1,000 megawatts. Unlike traditional reactors built on-site over many years, SMRs are manufactured in controlled factory environments and transported to their deployment locations, where they can be installed individually or in clusters to match specific power requirements. These systems employ advanced passive safety features that rely on natural physical phenomena like gravity and convection rather than active mechanical systems, reducing the risk of catastrophic failures. The modular design allows for standardised components and streamlined regulatory approval processes, while their smaller physical footprint and reduced cooling requirements enable deployment in locations unsuitable for conventional nuclear facilities.

The strategic appeal of SMRs lies in their ability to address critical vulnerabilities in national energy infrastructure and military operations. Traditional power grids face increasing threats from cyberattacks, extreme weather events, and geopolitical disruptions to fuel supply chains, while remote military installations and critical facilities often depend on diesel generators or long, vulnerable transmission lines. SMRs provide a solution by delivering decades of continuous baseload power from a single fuel loading, eliminating the logistical burden of constant fuel resupply in contested or isolated regions. For nations seeking to reduce dependence on imported fossil fuels or adversarial energy suppliers, distributed SMR deployments offer genuine energy sovereignty—the ability to maintain critical operations independent of external energy markets or infrastructure. The technology also supports grid resilience by enabling decentralised power generation that can continue operating even when broader transmission networks are compromised, a capability increasingly valued by both military planners and civilian infrastructure operators.

Several countries have advanced SMR programs beyond conceptual stages, with early deployments indicating growing confidence in the technology's viability. Research suggests that military applications may drive initial adoption, particularly for powering remote bases, radar installations, and data centres requiring uninterrupted electricity in austere environments. Industry analysts note that the reduced capital costs compared to conventional nuclear plants—stemming from factory production economies and shorter construction timelines—could make SMRs economically competitive with fossil fuel alternatives in regions with high fuel transport costs or carbon pricing mechanisms. The technology aligns with broader trends toward energy system decentralisation and resilience, offering nations a pathway to maintain critical capabilities during extended grid disruptions or supply chain crises. As geopolitical competition intensifies around energy security and technological sovereignty, SMRs represent a strategic asset for countries seeking to insulate vital infrastructure from external dependencies while maintaining low-carbon baseload generation capacity that can operate independently for years without refuelling.

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Source: Envisioning — Technology Research Institute (https://www.envisioning.com/research/meridian/small-modular-reactors)