Beyond Hydropower: Why Tanzania Must Take Nuclear Energy Seriously

Tanzania’s nuclear-energy debate is no longer theoretical. It is moving from the margins of technical regulation into the centre of the country’s long-term industrial strategy. For years, the subject sat inside the quieter language of atomic-energy oversight: radiation protection, licensing, medical equipment, food-chain controls, radioactive materials, mining standards, and laboratory safety. That foundation remains essential. But it is no longer the whole story. The sharper question now is whether Tanzania can build a credible nuclear-energy option before 2050, not as a prestige project, but as part of a disciplined energy strategy for an industrial economy. That distinction matters. Nuclear power is not just another energy project. It is a sovereign infrastructure decision. It touches grid stability, public debt, foreign exchange exposure, uranium governance, emergency preparedness, waste management, public trust, technology dependence, industrial demand and geopolitics. Countries do not simply buy nuclear power plants. They build the institutions, standards and capabilities around them over decades. Tanzania’s Development Vision 2050 raises the stakes. The Vision sets the country on a path toward a larger, more industrialised, more knowledge-driven and more competitive economy by mid-century. Public summaries of the Vision point to ambitions including a USD 1 trillion economy, higher per-capita income, stronger industrial capability and expanded energy access. Those ambitions cannot be separated from electricity. An economy built around ports, railways, mining, agro-processing, data centres, hospitals, special economic zones, cold chains, manufacturing, water systems and digital infrastructure will require far more reliable power than Tanzania’s economy consumes today. The question is not whether Tanzania needs more electricity. It does. The real question is what kind of energy system can carry industrial weight through 2050. The current energy expansion is significant. By March 2026, Tanzania’s installed generation capacity had reportedly reached 4,522.54 MW, with hydropower accounting for about 60.30% and natural gas for about 28.40%. Oil, biomass, solar, coal and wind made up the balance. This expansion, helped by major hydropower investments and continued gas generation, has improved the country’s energy position. But the structure of the mix also exposes the long-term problem. Hydropower is critical, but climate-vulnerable. Gas is dispatchable, but tied to fuel supply, infrastructure and emissions considerations. Solar and wind will grow, but require grid balancing, storage and transmission investment. Industrialisation requires not just more megawatts, but more firm, predictable and affordable power. That is where nuclear energy enters the strategic conversation. Globally, nuclear power is back in serious energy planning. At COP28, more than 20 countries backed a declaration to triple global nuclear-energy capacity by 2050, linking nuclear power to net zero, energy security and clean baseload supply. In 2025, the World Bank Group and the International Atomic Energy Agency formalised a partnership on nuclear energy for development, marking the World Bank’s first concrete step back into nuclear power in decades. The partnership focuses on safety, safeguards, regulation, energy planning, waste management and small modular reactors. This does not mean every developing country should build nuclear plants. It means nuclear is again being treated as a legitimate option where it can meet strict standards of safety, economics, governance and national readiness. For Tanzania, that global shift is important but should be read with discipline. Nuclear energy is not a shortcut around today’s electricity-access challenges. It will not replace the immediate need for transmission lines, grid upgrades, rural electrification, industrial connections, renewable deployment, gas optimisation and utility reform. Nuclear is a long game. If it becomes viable for Tanzania, it will most likely be because the country used the 2020s and 2030s to build readiness before making a construction decision in the 2040s. That is the correct sequence: readiness first, reactors later. Tanzania already has part of the legal foundation. The Atomic Energy Act establishes the Tanzania Atomic Energy Commission and gives it authority over the safe and peaceful use of atomic energy and nuclear technology. More importantly, the law explicitly allows the Commission to facilitate practical applications of nuclear technology for peaceful purposes, including the production of electric power using nuclear reactors, with due consideration of safety and national needs. That clause matters. It means nuclear power is not legally alien to Tanzania’s current framework. The law already anticipates it. What Tanzania does not yet have is a fully developed national nuclear-energy programme. The difference is substantial. A legal mandate can authorise ambition. A nuclear-energy programme must prove readiness. That is why the NEPIO discussion is strategically important. In June 2025, TAEC convened a national stakeholder workshop on nuclear energy and the importance of establishing a Nuclear Energy Programme Implementing Organization. The meeting brought together public- and private-sector stakeholders and framed nuclear energy as a possible long-term complement to other sources in Tanzania’s energy mix. A NEPIO does not mean Tanzania is about to build a nuclear power plant. It means the country is beginning to ask the right institutional questions: Who coordinates the programme? Who regulates it? Who owns the project? Who finances it? What role does TANESCO play? What is the role of EWURA, the Ministry of Energy, the Ministry of Minerals, universities, environmental authorities, emergency services and Parliament? What safeguards are needed? What public-communication framework is required? These are not secondary issues. In nuclear energy, they are the project. The IAEA’s Milestones Approach is the global benchmark for countries considering nuclear power. It requires a staged process before a country introduces its first nuclear plant, covering national position, legal and regulatory frameworks, nuclear safety, safeguards, security, radioactive waste, grid readiness, financing, human resources, procurement, stakeholder involvement and emergency preparedness. The latest guidance also includes considerations for small modular reactors. Measured against that standard, Tanzania is at the early preparation stage. That is not a weakness. It is simply the truth. The danger would be to confuse exploration with execution. Tanzania is not building a nuclear power plant today. It has no operational nuclear plant and no confirmed nuclear-power construction project. It is at an earlier and more consequential stage: deciding whether the country can build the institutions, grid capacity, safety systems, financing discipline, uranium safeguards and public trust required to make nuclear energy a credible option before 2050. That framing should guide the national debate. The case for nuclear energy rests on Tanzania’s future, not its present. If Vision 2050 succeeds, electricity demand will rise sharply. Industrial corridors will need firm power. Mines and processing plants will need stable supply. Ports and rail systems will require modern electrification. Cities will need resilient grids. Data centres and digital infrastructure will add new forms of demand. Hospitals, laboratories and cold chains will require uninterrupted electricity. A larger middle-income economy will consume electricity differently from today’s economy. Nuclear power could, in principle, serve that future because it offers high-capacity, low-carbon, firm electricity. It is not dependent on rainfall in the way hydropower is. It is not intermittent in the way solar and wind are. Properly managed, it can support industrial loads and strengthen long-term energy security. But the risks are just as real. Nuclear plants are capital-intensive, complex, slow to deliver and politically unforgiving. Poorly structured projects can lock countries into heavy debt, opaque procurement, foreign-exchange exposure, rigid power-purchase obligations and technology dependence. Waste management, emergency preparedness and liability cannot be improvised after construction. They must be built into the programme from the start. This is why Tanzania’s nuclear question must be economic before it is symbolic. The country should not pursue nuclear power because it wants to look modern. It should only pursue nuclear power if it becomes the most rational long-term answer to a specific energy problem: reliable, affordable, low-carbon power for a larger industrial economy. That test is demanding. Nuclear must be compared against gas, hydropower, geothermal, solar, wind, battery storage, pumped storage, regional power trade, transmission upgrades, demand-side management and future firm-power technologies. It must be tested against realistic demand forecasts, not inflated projections. It must be judged against the cost of capital, construction risk, tariff implications, grid readiness and public acceptance. Small modular reactors may become relevant to that discussion. SMRs are attracting global interest because they promise smaller unit sizes, potentially lower upfront capital requirements, modular deployment and possible use in industrial clusters or smaller grids. For Tanzania, SMRs could eventually be more realistic than a large conventional reactor if the technology matures commercially and the economics become bankable. But SMRs are not magic. They still require licensing, safety cases, trained operators, emergency planning, waste management, cybersecurity, vendor due diligence and long-term financing. A smaller reactor does not mean smaller responsibility. The uranium question adds another strategic layer. Tanzania’s Mkuju River Uranium Project gives the country a position in the global nuclear supply chain. In May 2026, the Ministry of Minerals urged Mantra Tanzania Limited to begin uranium production on schedule, following the launch of a pilot uranium processing plant in July 2025. The ministry has said the project is expected to produce about 3,000 tonnes of uranium annually once operations begin. That does not automatically justify domestic nuclear power. Many uranium-producing countries do not operate nuclear reactors. Uranium is not a shortcut to nuclear sovereignty. But uranium does make nuclear governance unavoidable. It brings radioactive ore regulation, environmental monitoring, export controls, safeguards, worker safety, local-content questions and public scrutiny into the centre of Tanzania’s mining policy. If handled well, uranium can strengthen Tanzania’s technical capabilities. If handled poorly, it can become another extractive-sector vulnerability. The opportunity is to link uranium governance to national capability. Tanzania can use uranium not merely as an export commodity, but as a reason to strengthen nuclear law, radiation laboratories, environmental science, safeguards expertise, mining regulation and high-skilled technical training. Those capabilities would serve more than nuclear energy. They would strengthen health, agriculture, mining, manufacturing, water management, food safety and export certification. That is the practical side of nuclear development. A country does not need an operating reactor to benefit from nuclear science. Tanzania can immediately expand nuclear applications in cancer treatment, medical imaging, food irradiation, pest control, industrial testing, mining safety, soil analysis, water-resource studies, environmental monitoring and cargo certification. These applications are less dramatic than a power plant, but they are strategically useful. They build the safety culture, laboratories, technical workforce and public familiarity that any future nuclear-energy programme would require. They also produce near-term economic value. This should be Tanzania’s first nuclear dividend: capability before capacity. The financing issue will determine how far the country can go. Nuclear power is not financed like an ordinary power project. Even when private partners, export-credit agencies or vendor governments are involved, the risk often returns to the sovereign balance sheet. Foreign-exchange exposure, debt sustainability, long-term tariffs, insurance, guarantees and power-purchase obligations all become national issues. That is why Bank of Tanzania data and macroeconomic conditions matter to the nuclear debate. A nuclear project would sit inside Tanzania’s broader financial architecture: reserves, inflation, credit growth, fiscal space, external debt, private-sector capital and long-term currency risk. A country can have a strong energy case and still fail the financing test. The World Bank’s return to nuclear engagement is therefore significant but should not be exaggerated. It signals that nuclear power is regaining legitimacy in development finance. It does not mean cheap nuclear capital is waiting for every country with ambition. Financing will follow countries that can demonstrate strong institutions, credible demand, transparent procurement, safety standards and economic discipline. For Tanzania, the right posture is disciplined optionality. Between now and 2030, the country should focus on readiness. Establish NEPIO. Strengthen TAEC’s regulatory capacity. Deepen cooperation with the IAEA. Complete a pre-feasibility assessment for nuclear power. Map legal and regulatory gaps. Build nuclear-science training programmes. Upgrade laboratories. Strengthen radioactive waste systems. Develop uranium safeguards. Begin grid-readiness studies. Start public education before misinformation defines the debate. Between 2030 and 2040, Tanzania should move from readiness to decision quality. This phase should test whether nuclear power is economically justified against all competing options. It should include siting studies, cooling-water analysis, grid simulations, demand modelling, vendor screening, financing analysis, liability law, waste strategy, emergency planning, environmental assessment, parliamentary oversight and public consultation. Only after that should Tanzania decide whether to proceed toward construction. That may sound slow. In nuclear energy, slow is often responsible. The countries that succeed treat nuclear power as a system, not as a project. The climate argument strengthens the case for long-term planning. The World Bank’s Tanzania Country Climate and Development Report warns that climate change could slow Tanzania’s growth by up to 4% by 2050, push 2.6 million people into poverty and internally displace up to 13 million people if left unchecked. A country exposed to climate risk cannot ignore firm low-carbon power. But neither can it ignore cost, safety and institutional readiness. Nuclear energy belongs in Tanzania’s 2050 conversation because the country’s ambitions are large enough to require it as an option. It does not yet belong in Tanzania’s construction pipeline because the country must first prove readiness. That is the line policymakers must hold. The strongest nuclear strategy for Tanzania is not immediate procurement. It is a national readiness programme anchored in global standards, domestic capability, and sober economics. It should be built around safety first, public trust always, and economic sense above prestige. If Tanzania eventually builds a nuclear power plant, the reactor should be the final expression of national readiness, not the beginning of the journey. Vision 2050 will not be achieved by ambition alone. It will require energy systems capable of carrying industrial weight. Nuclear energy may become part of that system, but only if Tanzania prepares with discipline. The nuclear future should begin with a simple principle: build the country before building the plant.