Small Modular Reactors (SMRs) are an innovative and increasingly popular form of nuclear power technology. These compact reactors are designed to be built in factories and shipped to sites for installation, offering a flexible, scalable, and potentially more affordable approach to nuclear energy. As the world shifts toward cleaner energy sources, SMRs are gaining attention for their potential to provide reliable electricity with reduced environmental impact. But which companies are leading the development and manufacturing of these small-scale nuclear reactors? In this article, we explore the key players involved in making small modular reactors and their contributions to this transformative energy sector.
What Are Small Modular Reactors?
Before diving into the companies behind SMRs, it’s important to understand what they are. Small Modular Reactors are nuclear reactors typically producing up to 300 megawatts of electricity per unit—significantly smaller than traditional nuclear power plants. Their modular design allows for prefabrication in factories, which can then be assembled on-site. This approach offers several advantages:
- Reduced construction times and costs
- Enhanced safety features due to simplified design
- Flexibility to scale power generation
- Potential for deployment in remote or underserved regions
SMRs are seen as a promising solution for diversifying the energy grid, supporting decarbonization efforts, and providing resilient power sources in a variety of settings. Several companies worldwide are pioneering the development of SMRs, each bringing unique technologies and approaches to the table.
Leading Companies in Small Modular Reactor Development
1. NuScale Power
NuScale Power, headquartered in Portland, Oregon, United States, is widely recognized as a front-runner in the SMR industry. Founded in 2007, NuScale has developed a proprietary small modular reactor design that emphasizes safety, scalability, and cost-effectiveness.
The NuScale VOYGR™ Power Module is a 77-megawatt reactor that can be combined to create a power plant of up to 924 megawatts. Its design features natural circulation cooling, passive safety systems, and modular construction, making it highly attractive for various applications, including remote communities, industrial sites, and as a complement to renewable energy sources.
NuScale received significant regulatory milestones, including approval from the U.S. Nuclear Regulatory Commission (NRC) in August 2023, marking a major step toward commercial deployment. The company is actively working on constructing its first SMR plant in Idaho, with plans for international expansion.
2. TerraPower
Founded by Bill Gates in 2013, TerraPower is an innovative nuclear technology company based in Bellevue, Washington. While initially known for its advanced reactor designs, TerraPower is also heavily involved in developing SMRs, particularly their Natrium reactor, which combines fast reactor technology with molten salt energy storage.
The Natrium reactor aims to provide flexible, reliable power and can operate at load-following capacities, making it suitable for integrating with renewable sources. TerraPower collaborates with GE Hitachi Nuclear Energy on the development of its SMR projects, leveraging extensive experience in nuclear engineering.
TerraPower’s approach focuses on safety, efficiency, and environmental sustainability, aiming to revolutionize nuclear energy and make it more accessible worldwide.
3. GE Hitachi Nuclear Energy
GE Hitachi Nuclear Energy, a joint venture between General Electric and Hitachi, is a major player in the global nuclear industry. Although traditionally known for their large reactors, GE Hitachi is developing SMR technologies tailored for various markets.
The company’s BWRX-300 is a 300-megawatt small modular reactor based on existing boiling water reactor technology. Its design emphasizes simplicity, safety, and cost reduction, with factory fabrication and modular assembly. The BWRX-300 has received attention for its potential to provide clean energy at competitive costs and is being considered for deployment in multiple countries.
GE Hitachi continues to invest in SMR research and development, seeking to expand its portfolio and contribute to the global transition toward sustainable energy sources.
4. Rolls-Royce Small Modular Reactor (UK)
In the United Kingdom, Rolls-Royce is spearheading the development of a small modular reactor concept tailored to the UK’s energy needs and infrastructure. Their design aims to produce around 470 megawatts, suitable for providing low-carbon electricity to the UK grid and supporting industrial decarbonization.
Rolls-Royce’s SMR project benefits from the UK government’s support and aims to facilitate rapid deployment, with plans to begin construction by the early 2030s. The company emphasizes safety, affordability, and environmental sustainability, positioning itself as a key player in the European SMR market.
5. China National Nuclear Corporation (CNNC)
China is rapidly advancing in nuclear technology, with CNNC playing a central role in developing SMRs for domestic use and export. Their HTR-PM (High-Temperature Gas-cooled Reactor – Pebble-bed Module) is a high-temperature gas-cooled reactor designed to generate both electricity and process heat.
CNNC’s focus on SMRs aligns with China’s broader strategy to become a global leader in nuclear technology. The company has also announced plans to develop smaller reactor models to serve remote regions and industrial applications, aiming to expand China’s influence in the global SMR market.
6. Rusatom Energy Solutions (Russia)
Russia’s state-owned nuclear corporation, Rosatom, is actively involved in SMR development through its subsidiary, Rusatom Energy Solutions. They have developed the RITM-200 reactor, a small modular reactor designed primarily for marine applications and remote power stations.
Rusatom’s SMRs are designed with safety and efficiency in mind, and the company promotes their use for arctic regions, island nations, and industrial sites. Russia aims to export its SMR technology to various countries, increasing its global nuclear footprint.
Emerging and Innovative Players
Beyond the major companies listed above, several startups and emerging firms are entering the SMR market with innovative designs and approaches:
- Oklo Inc. (USA): Focuses on small, natural gas-powered reactors suitable for remote areas and microgrid applications.
- X-energy (USA): Developing the Xe-100 reactor, a high-temperature gas-cooled SMR with advanced safety features.
- TerraPower's collaborations: Engaging with international partners for deployment in various regions.
These companies are pushing the boundaries of nuclear technology, emphasizing safety, sustainability, and cost-effectiveness.
Conclusion
The development of Small Modular Reactors represents a significant step forward in the quest for cleaner, reliable, and scalable energy solutions. Several leading companies including NuScale Power, TerraPower, GE Hitachi, Rolls-Royce, CNNC, and Rusatom are at the forefront of this technological revolution, each bringing unique designs and strategic visions to the table. As regulatory approvals progress and deployment plans advance, SMRs are poised to become a vital part of the global energy landscape, supporting the transition to a low-carbon future.
With continuous innovation and international collaboration, the companies making small modular reactors are helping shape a sustainable, resilient, and technologically advanced energy future for generations to come.
References
- NuScale Power. (2023). https://www.nuscalepower.com/
- TerraPower. (2023). https://www.terrapower.com/
- GE Hitachi Nuclear Energy. (2023). https://www.ge.com/nuclear
- Rolls-Royce. (2023). https://www.rolls-royce.com/energy/our-solutions/small-modular-reactors.aspx
- China National Nuclear Corporation. (2023). http://www.cnnc.cn/
- Rosatom. (2023). https://rosatom.ru/en/
- Oklo Inc. (2023). https://www.oklo.co/
- X-energy. (2023). https://x-energy.com/
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