Nuclear Power and Sustainable Development: What Singapore Needs to Know

Singapore faces a significant challenge as it works towards a sustainable future: how can a small, densely populated country secure reliable and affordable electricity while reducing carbon emissions? As electricity demand grows alongside digital infrastructure, advanced manufacturing, transport electrification and economic development, the country must explore energy sources that can support long-term growth without compromising environmental sustainability.

One technology attracting increasing attention is nuclear power. Unlike fossil fuel power plants, nuclear reactors can generate electricity with very low direct carbon emissions during operation and provide consistent power regardless of sunlight or wind conditions. However, nuclear energy also introduces important considerations, including radiation protection, radioactive waste management, construction costs, emergency preparedness and public confidence.

As of October 2026, Singapore has not decided to adopt nuclear power. Instead, the government is studying advanced nuclear technologies to determine whether they could become a safe, reliable, affordable and environmentally sustainable option for the country. Understanding this process helps explain how nuclear energy could contribute to Singapore's sustainable development goals and what challenges policymakers must address before making a decision.

1. Understanding Nuclear Power and Sustainable Development

Sustainable development means meeting today's needs without undermining the ability of future generations to meet their own needs. It involves balancing three interconnected priorities: environmental protection, economic prosperity and social well-being.

Nuclear power could contribute to these objectives by providing large amounts of low-carbon electricity. In a nuclear reactor, energy released through the splitting of atomic nuclei heats water or another coolant. The resulting heat produces steam, which drives turbines connected to electrical generators.

Unlike coal and natural gas power stations, nuclear plants do not burn fossil fuels to generate electricity. Their operational greenhouse gas emissions are therefore very low. Nevertheless, nuclear power is not entirely emission-free across its life cycle because uranium mining, fuel processing, construction, maintenance and decommissioning also require energy and resources.

For Singapore, the central question is not simply whether nuclear power can generate electricity. It is whether nuclear technology can contribute to a more sustainable energy system while meeting the country's demanding safety, economic and environmental requirements.

A responsible assessment must consider the entire energy life cycle, including fuel sourcing, construction, operation, waste disposal and eventual plant retirement.

2. Why Singapore Is Exploring Nuclear Energy

Singapore has limited domestic energy resources and little land available for large-scale renewable energy installations. These constraints make energy diversification particularly important.

According to Singapore's government, approximately 95% of the country's electricity is generated using imported natural gas. Although natural gas provides dependable electricity, it remains a fossil fuel that produces carbon dioxide when burned. Dependence on imported fuel also exposes Singapore to international price fluctuations and potential supply disruptions.

Solar energy remains a major part of Singapore's clean energy strategy, but the country's land constraints limit how much electricity it can produce domestically from solar installations alone. Regional electricity imports and other emerging low-carbon technologies may therefore play important roles in the future energy mix.

Nuclear power is being investigated as another potential option because it could provide reliable electricity with low operational carbon emissions.

The government is also monitoring advanced reactor designs, including small modular reactors (SMRs), which are intended to be manufactured in modules and assembled at project sites. Some designs incorporate passive or other enhanced safety systems, although their actual performance, cost and suitability must be evaluated individually.

The goal is to keep future energy options open rather than commit prematurely to a technology that may not meet Singapore's needs.

3. How Nuclear Power Could Support Singapore's Climate Goals

Singapore has committed to achieving net-zero emissions by 2050. Reaching this target requires reducing emissions across electricity generation, industry, transport and other sectors.

Electricity generation is particularly important because it supports nearly every part of the modern economy, from household appliances to data centres and industrial production.

Nuclear power could contribute to decarbonisation in three main ways.

First, it could reduce dependence on fossil fuels. If nuclear-generated electricity replaced a portion of natural gas generation, Singapore could potentially reduce emissions associated with producing electricity. The actual benefit would depend on the reactor's life-cycle emissions, operating performance and the generation it displaced.

Second, it could provide dependable low-carbon electricity. Nuclear reactors can operate for extended periods without depending on changing weather conditions. This characteristic could complement solar power, whose output varies throughout the day and with cloud cover.

Third, it could support growing electricity demand. Data centres, semiconductor manufacturing and other electricity-intensive industries need dependable power. Nuclear energy could potentially help meet these requirements while supporting broader decarbonisation efforts.

However, nuclear power is not a substitute for every other climate solution. Energy efficiency, solar deployment, regional electricity connections, grid improvements and other low-carbon technologies will remain important elements of a diversified strategy.

4. Nuclear Power, Economic Growth and Energy Security

Sustainable development also depends on maintaining a competitive economy, creating skilled jobs and protecting businesses from energy disruptions.

For Singapore, reliable electricity is essential to its position as a regional centre for finance, logistics, advanced manufacturing and digital services. A diversified energy supply could reduce exposure to individual fuel sources and strengthen resilience against international energy market volatility.

If nuclear power eventually proves suitable, its potential economic benefits could include:

• Energy security: Reducing reliance on a single imported fuel by diversifying electricity generation.

• Skilled employment: Creating opportunities in nuclear engineering, radiation protection, regulatory science, safety analysis and technical research.

• Research and innovation: Encouraging partnerships between universities, government agencies and international nuclear institutions.

• Industrial competitiveness: Potentially supporting industries that require stable, low-carbon electricity.

  
  

However, these benefits are not guaranteed. Nuclear power plants typically require substantial upfront investment, extensive planning, specialised workers and long development timelines. Financing costs, construction delays, fuel arrangements, maintenance and decommissioning can all affect the final cost of electricity.

Singapore must therefore evaluate whether nuclear power could compete economically with alternatives such as imported low-carbon electricity, solar power combined with storage, and other emerging energy technologies.

The most sustainable choice will be the one that delivers dependable electricity at a reasonable total cost while protecting public health and the environment.

5. Safety and Radioactive Waste: The Challenges Singapore Must Address

Safety is one of the most important considerations when assessing nuclear power in Singapore.

The country has a small land area and a densely populated urban environment. These characteristics create specific challenges for selecting a reactor site, establishing appropriate protective arrangements and preparing for emergencies.

Although modern nuclear technologies may incorporate improved safety features, no technology should be treated as risk-free. A comprehensive assessment must consider equipment failures, human error, external hazards, cybersecurity threats and other potential accident scenarios.

Singapore would need robust regulatory institutions, qualified inspectors, independent technical expertise and clear emergency-response procedures before any nuclear facility could operate.

Radioactive waste management presents another major challenge. Nuclear power produces different types of radioactive waste, including used nuclear fuel. Some materials require controlled storage and isolation for extended periods, depending on their characteristics.

A credible waste-management strategy must establish how waste will be handled, transported, stored and ultimately disposed of. It must also identify who will oversee these activities and how the associated costs will be funded over time.

International cooperation could help Singapore develop appropriate standards and learn from countries with established nuclear programmes.

In March 2026, Singapore's National Environment Agency announced studies examining international nuclear safety standards, regulatory frameworks and environmental considerations. These efforts demonstrate that evaluating nuclear power involves much more than selecting a reactor design.

6. Small Modular Reactors: Could They Suit Singapore?

Small modular reactors are an important part of Singapore's nuclear energy assessment.

Unlike conventional large reactors, SMRs are designed to have smaller generating capacities, with some components manufactured in factories and assembled at their installation sites. Depending on the design, they may offer greater flexibility in project development and incorporate different safety approaches.

For a land-constrained country such as Singapore, these characteristics make SMRs worth investigating. Nevertheless, smaller reactors do not automatically solve every challenge associated with nuclear power.

Their suitability depends on the reactor design, safety analysis, land requirements, emergency planning arrangements, cooling systems, waste-management needs, supply-chain availability and total project costs.

Commercial maturity is another important consideration. Many advanced reactor designs remain under development, and their projected costs and performance may differ from those demonstrated in commercial operation.

Singapore must therefore distinguish between promising engineering concepts and technologies that have demonstrated dependable, economically competitive performance.

The Energy Market Authority is studying advanced nuclear technologies and working with international partners to strengthen Singapore's technical capabilities. These activities are intended to support an informed future decision, not to confirm that SMRs will be deployed locally.

7. Singapore's Nuclear Energy Plans and the IAEA Review

A significant milestone in Singapore's nuclear energy assessment will begin in 2027.

The country plans to undertake Phase 1 of the International Atomic Energy Agency's (IAEA) Integrated Nuclear Infrastructure Review, commonly known as INIR. This independent review will assess Singapore's readiness to make an informed decision about the possible deployment of nuclear energy.

The IAEA framework examines 19 infrastructure areas, including nuclear safety, security, legislation, regulatory arrangements, radioactive waste management, emergency preparedness, human resources and public engagement.

Importantly, the review does not decide whether Singapore should build a nuclear power plant. Instead, it evaluates whether the country has developed the capabilities and frameworks necessary to assess the option responsibly.

Singapore intends to share the independent findings when the review is completed, potentially towards the end of 2027 or in 2028. The government has also indicated that the public will have an opportunity to provide views following the review.

This process reflects a cautious approach to sustainable development: gather evidence, assess risks, build expertise and consult stakeholders before committing to major infrastructure.

8. Nuclear Power Versus Other Clean Energy Options

Nuclear power should be evaluated alongside other options rather than in isolation.

Energy source	Potential contribution	Main limitation
Solar energy	Renewable electricity with low operational emissions	Limited land and variable output
Nuclear power	Dependable, low-carbon electricity	High upfront investment, safety and waste requirements
Imported electricity	Diversifies domestic supply and accesses regional resources	Depends on cross-border infrastructure and external supply
Natural gas	Established, dispatchable electricity generation	Produces carbon emissions and relies on imported fuel
Energy storage	Helps balance variable renewable generation	Costs, duration and resource requirements vary

These technologies can complement one another. Solar power can reduce fossil fuel consumption during sunny periods, storage can help balance fluctuations, and regional electricity connections can expand access to alternative supplies.

Nuclear power, if proven suitable, could provide another source of dependable low-carbon generation.

Singapore's long-term energy strategy will need to balance reliability, affordability, environmental sustainability and resilience. No single technology can be assumed to deliver the best outcome in every circumstance.

Ministry of Sustainability and the Environment

9. What Nuclear Power Means for Singapore's Sustainable Future

The potential role of nuclear power extends beyond electricity generation. It raises important questions about scientific education, workforce development, environmental governance and public participation.

Universities and research institutions could contribute by developing expertise in reactor modelling, radiation science, energy systems and nuclear safety. International partnerships could help train specialists and strengthen regulatory capabilities.

Public communication will also be essential. People need accessible, evidence-based information about potential benefits, risks, costs and uncertainties. Transparent decision-making can help ensure that national energy policy reflects both scientific evidence and public concerns.

At the same time, Singapore must continue developing proven low-carbon solutions rather than waiting for future nuclear technologies to mature. Improving energy efficiency, expanding solar capacity, strengthening regional electricity links and supporting research into emerging technologies remain important steps towards a more sustainable energy system.

Ultimately, nuclear power should be considered only if it can meet Singapore's specific requirements and contribute meaningfully to its long-term environmental and economic objectives.

Conclusion

Nuclear power presents Singapore with a potential opportunity to strengthen energy security, reduce electricity-related carbon emissions and support a growing economy. Its ability to provide dependable, low-carbon electricity makes it an option worth examining, particularly as the country pursues net-zero emissions by 2050 and faces limitations on domestic renewable energy deployment.

However, the potential benefits must be weighed against substantial challenges, including safety, radioactive waste management, financing, technological maturity and land constraints. Small modular reactors may offer promising features, but their suitability for Singapore requires rigorous, independent assessment.

The key takeaway is that nuclear power is a possibility for Singapore, not a confirmed national energy policy. The planned IAEA review in 2027 will help establish whether Singapore has the capabilities needed to make an informed decision. Until then, continued research, international cooperation, transparent public engagement and investment in existing clean energy solutions will remain essential.

Singapore's sustainable development will ultimately depend on building an energy system that is secure, affordable, environmentally responsible and resilient for future generations. Nuclear power may become part of that solution, but its role must be determined by evidence, safety and the country's long-term needs.

While Singapore is a nuclear-free zone, understanding potential radiation risks is crucial. Our detailed guide explores these risks, outlines Singapore's safety frameworks, and highlights singaporenuclear.com as a key resource for PPE and radiation hardware for enhanced preparedness.