Small Modular Reactors (SMRs): The Nuclear Resurgence

The Nuclear Energy in Spain and in Europe, it is returning to the energy agenda with a force that would have seemed unlikely a decade ago. The small modular reactors These aren't science fiction: there are projects under construction, signed contracts, and a demand for nuclear engineers which clearly exceeds the available supply. Engineering firms that understand the current situation have a window of opportunity that will not remain open indefinitely.

Why Nuclear Energy Is Back on the Global Energy Agenda

The decarbonization of the energy system has brought nuclear power back into the conversation. It is the only baseload power source that continuously generates electricity without CO₂ emissions, regardless of weather conditions. In a context where the intermittency of renewable energy sources requires a reliable backup, nuclear power is regaining its strategic appeal.

Added to this is the crisis of energy supply which has affected Europe since 2022, accelerating a reevaluation of nuclear power in countries that had begun the process of phasing out nuclear plants. France has announced the construction of new reactors, Poland has signed contracts for its first nuclear power plant, and the United Kingdom has declared nuclear power to be of national strategic interest.

What Are SMRs, and How Do They Differ from Traditional Nuclear Power?

A small modular reactor (SMR) is a nuclear power reactor with a capacity of less than 300 MWe, designed to be manufactured in a factory in standardized modules and assembled on site. Mass production reduces costs, shortens lead times, and improves quality control compared to large power plants built entirely on site.

SMRs also have an improved safety profile, can operate at smaller sites, and are more flexible in terms of integration with smaller-scale power grids. It is technology that has reignited investor interest in nuclear power because they solve the two major historical problems facing the industry: cost and construction time.

The Global and European Map of SMR Projects: Who Is Investing?

Europe and Its Nuclear Roadmap

Poland, the Czech Republic, Romania, and the Baltic states are leading the European nuclear push as part of their energy independence strategy. France is moving forward with its EPR2 program and exploring SMRs through EDF. The United Kingdom has the most advanced SMR program in Western Europe, with Rolls-Royce as the lead developer.

The United States and Asia

The United States is the world's most active SMR market, with NuScale, X-energy, and TerraPower as the leading developers. China has more than twenty reactors under construction and has deployed the world’s first commercial SMR. South Korea and Japan have relaunched their nuclear programs with a specific focus on SMR technology.

Spain's Role in the Supply Chain

Spain currently has no plans for new power plants, but Its supporting industry has historically played a significant role in the international nuclear supply chain. Spanish engineering, component manufacturing, and technical services companies are involved in projects in France, the United Kingdom, and Latin America. The sector’s global resurgence is creating real opportunities to establish a foothold in that supply chain before it becomes firmly established.

Mapa proyectos SMR – Structuralia

Interactive Map of SMR Projects Around the World

Select a region to explore the leading small modular reactor projects

Region
Europe is leading the regulatory and political debate on SMRs, with several countries having made formal investment decisions. The European regulatory framework is being adapted to accommodate the modular and serial design of these reactors.
🇬🇧Rolls-Royce SMR – United Kingdom
PWRAdvanced Design
Rolls-Royce's SMR program is the most advanced in Western Europe. It is a 470 MWe design, with the goal of having the first unit operational in the 2030s. It has financial support from the British government and has completed the Generic Design Assessment with the regulator.
470 MWe
Power per unit
2030s
First planned unit
GDA Completed
Regulatory Status
🇫🇷NUWARD – France (EDF)
PWRConceptual Design
EDF is developing the NUWARD as a French-designed SMR with a capacity of 340 MWe (two 170 MWe modules). France has also relaunched its EPR2 large-reactor program, with six units in advanced planning.
340 MWe
Total power (2 modules)
2035+
Projected Horizon
ASN Pre-Training
Regulatory Status
🇵🇱SMR Poland – ORLEN Synthos Green Energy
BWRX-300Development
Poland has selected GE Hitachi's BWRX-300 technology for its SMR program. It is one of the most advanced programs in terms of political and corporate commitment. Poland has no history of nuclear power, which makes this project a challenge in terms of building capacity from the ground up.
300 MWe
Power per unit
6+ units
Program Objective
Licensing process initiated
Regulatory Status
🇷🇴NuScale – Romania
NuScale VOYGRDevelopment
Romania signed an agreement with NuScale Power to develop the first SMR based on VOYGR technology in Europe. The project has the support of the U.S. government and is part of the energy independence strategy of Eastern European countries.
462 MWe
Total power (6 modules)
Doicești
Planned Location
In progress
Project Status
The United States is the world's most active SMR market, with the largest number of designs under development and the most significant public-sector financial support through the Department of Energy.
🇺🇸NuScale VOYGR
Modular PWRNRC License Obtained
NuScale was the first SMR design to receive approval from the U.S. Nuclear Regulatory Commission (NRC). Although the Idaho project has been canceled due to cost concerns, the company continues to pursue agreements in Europe and Asia using the certified design.
77 MWe per module
Power per module
NRC Certificate
Regulatory Status
Active Projects
in Europe and Asia
🇺🇸TerraPower Natrium – Wyoming
Quick SodiumConstruction has begun
TerraPower, founded by Bill Gates, is building the first Natrium reactor in Wyoming, on the site of a coal-fired power plant that is being decommissioned. The reactor uses fast sodium reactor technology with integrated energy storage using molten salts.
345 MWe
Base Power
2030
Expected date of operation
Kemmerer, WY
Location
🇺🇸X-energy Xe-100
HTGRAdvanced Development
X-energy is developing the Xe-100, a high-temperature, gas-cooled reactor with a pebble-bed fuel assembly. It has received significant funding from the DOE and has contracts with Dow Chemical to supply heat for industrial processes.
80 MWe per module
Power per module
Industrial Heat
Differential Application
DOE-funded
Public support
Asia leads the world in the actual deployment of nuclear reactors, with China as the most active player. The world's first commercial SMR is already operational in Chinese waters.
🇨🇳ACPR50S – China (first floating SMR)
PWRIn operation
China has deployed the world's first commercial SMR in the form of a floating nuclear power plant. It is designed to supply power to offshore platforms and remote islands. China also has more than 20 conventional reactors under construction simultaneously, making it the world's largest active nuclear program.
60 MWe
Power per unit
Operation
Current Status
Offshore
Application
🇰🇷SMART – South Korea
Comprehensive PWRBachelor's Degree Holder
South Korea's SMART (System-integrated Modular Advanced ReacTor) was the world's first SMR to obtain a standard design license in 2012. Korea Hydro & Nuclear Power is seeking export markets in the Middle East and Asia.
100 MWe
Power per unit
First graduate
in the world (2012)
Active Export
Business Strategy
🇯🇵Japan's Nuclear Revival
MultiplePolicy Approved
Japan has formally approved the relaunch of its nuclear program and is considering the construction of next-generation reactors, including SMRs, as part of its decarbonization strategy. The restart of existing reactors is proceeding in parallel.
Policy Approved
2023
33 reactors
to reactivate
SMR Under Review
for new construction
Latin America has a small nuclear sector but one with key players. Argentina and Brazil have their own technology and industrial capacity, and several countries are exploring nuclear power as an option for energy diversification.
🇦🇷CAREM – Argentina (INVAP/CNEA)
Comprehensive PWRUnder construction
CAREM is a small modular reactor (SMR) designed and built entirely in Argentina, developed by INVAP and the CNEA. With a capacity of 32 MWe, it is the only SMR of Latin American design currently under construction. Argentina also has the capacity to enrich uranium and manufacture nuclear fuel.
32 MWe
Power per unit
Under construction
Lima, Buenos Aires
Domestic Design
Argentine 100%
🇧🇷Angra 3 and the Brazilian Nuclear Program
PWRConstruction Resumed
Brazil has resumed construction of Angra 3, which had been stalled for years, and is considering the construction of new reactors. It has significant uranium reserves and its own enrichment capacity through the Brazilian Navy.
1,405 MWe
Angra 3 Power Plant
Construction Resumed
Current Status
New Units
under review
80+
SMR designs currently under development around the world
20+
countries with active nuclear programs
2030s
first wave of commercial SMRs
400 GW
EU 2050 Nuclear Capacity Target

Business Opportunities for Engineering Firms in the SMR Ecosystem

The opportunities are not limited to the construction of the reactors. The SMR ecosystem drives demand for design engineering, precision component manufacturing, safety systems, waste management, regulatory licensing, and operation and maintenance. Companies with experience in technically demanding sectors such as oil and gas, aerospace, or process engineering have skills that can be applied to the nuclear supply chain.

Autodiagnóstico cadena suministro nuclear – Structuralia

Can your company become part of the nuclear supply chain?

6-Question Self-Assessment

In-Demand Job Roles in the Nuclear Sector

Nuclear engineers

Nuclear engineers are the hardest-to-find professionals in the industry y the one that takes the longest to train for. The shortage is structural: during the decades of industrial decline, universities drastically reduced the number of training programs offered, and young people did not choose this field of study. It will take years to rebuild that pool of core talent, and the companies that start training him sooner will have an advantage.

Security and Licensing Specialists

The licensing of nuclear facilities It is one of the most complex and heavily regulated processes in any industry. Specialists capable of managing relationships with regulators, preparing safety reports, and coordinating the authorization process are rare and highly valued in any project.

Materials and Components Engineers

SMRs require materials with specific properties related to radiation resistance, temperature resistance, and corrosion resistance. Materials engineers with experience in nuclear environments are in high demand for the component supply chain, especially in Europe, where the nuclear industrial base has shrunk significantly.

Nuclear Project Management

Nuclear project management combines the complexity of large-scale engineering with the most stringent regulatory requirements in the energy sector. Project managers with experience in the nuclear sector are extremely rare and highly sought after by the few developers currently active in the market.

The Nuclear Talent Gap: The Challenge of Generational Succession

The demographic situation in the nuclear sector is one of its most pressing problems. The professionals who built and operated today's power plants are reaching retirement age, and there is no guarantee that the next generation will take over. In many countries, more than 40% of the sector's workers are over 50 years old.

Pirámide de edad sector nuclear – Structuralia

Age Pyramid of the Nuclear Sector by Profile

Select the professional profile to view the age distribution and its implications

How Companies Are Training Their Teams in the Face of a Nuclear Resurgence

The most forward-thinking companies are investing in specialization programs designed for engineers in related fields (oil & gas, process industry, civil engineering) and retrain them in specific nuclear competencies. Training in nuclear culture, safety regulations, and the management of regulated projects is at the core of these programs.

Structuralia is active in technical training for the energy sector, with instructors from companies currently in operation, including in the field of high-demand facilities technical skills related to the nuclear sector.

Regulatory and Social Acceptance Challenges

The licensing of new nuclear facilities is the most common bottleneck in the development of SMR projects. Regulatory frameworks were not designed for modular series reactors, and the process of adapting existing regulations is proceeding slowly in most countries.

Social acceptance is also a key factor. The new generations of SMRs have a safety profile that is very different from that of the reactors involved in major historical accidents, but Communicating that change credibly to the public is a challenge that the industry has not yet fully addressed.

Trends in Nuclear Energy and SMRs for the Coming Years

The first wave of commercial SMRs will be operational before 2035. Investment decisions that will determine which supply chain companies will participate in these projects are being made now. Competition for nuclear talent will intensify as the projects move from the design phase to the construction phase.

The nuclear resurgence is not a marginal trend: It is a transformation of the global energy mix that will generate decades of demand for specialized engineering. Companies that position themselves now in the SMR supply chain will have a structural advantage over those that wait until the market is fully defined. Has your company identified the capabilities it needs to participate in this market?

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