Bangladesh has entered a historic phase in its energy journey with the start of nuclear fuel loading at the first unit of the Rooppur Nuclear Power Plant in Ishwardi, marking its transition toward nuclear-generated electricity and positioning the country as the world’s 33rd nuclear power-producing nation.
The milestone signals a shift from construction to operational readiness at the $12.65 billion project, the most expensive power initiative in Bangladesh’s history.
However, experts caution that commercial electricity generation remains a complex, multi-stage process involving rigorous testing, safety verification and grid synchronization.
The development has also reignited debate over the project’s financial viability, electricity pricing, safety preparedness, radioactive waste management and long-term economic implications.
The Rooppur Nuclear Power Plant, Bangladesh’s first nuclear facility, has been under development for nearly a decade.
Key milestones include the issuance of a site licence by the Bangladesh Atomic Energy Regulatory Authority in 2016, the pouring of first concrete for Unit 1 in November 2017, and the start of Unit 2 construction in July 2018.
Transmission infrastructure was completed in 2025, paving the way for fuel loading in April 2026, with commercial operations expected between late 2026 and 2027.
Officials from the Bangladesh Atomic Energy Commission said the commissioning licence for fuel loading was granted only after extensive regulatory scrutiny under international supervision.
The project is being financed primarily by the Russian Federation, which is providing around 90% of the funding through state credit, with Rosatom serving as the technology provider.
Economists note that while nuclear power requires high upfront investment, long-term sustainability will depend on operational efficiency, electricity tariffs and loan repayment structures.
Fuel loading, one of the most sensitive stages of nuclear power generation, involves inserting nuclear fuel assemblies into the reactor core.
At Rooppur, each VVER-1200 reactor will contain 163 fuel assemblies, with the loading process expected to take approximately 40 to 45 days.
Each assembly contains enriched uranium pellets capable of producing significant amounts of energy.
Once completed, the reactor will move toward “first criticality,” when a controlled nuclear chain reaction begins.
Unlike fossil fuel-based plants, nuclear power stations generate electricity through nuclear fission.
The process involves splitting uranium nuclei to release heat, which converts water into steam, drives turbines, and ultimately generates electricity.
The high energy density of nuclear fuel means that small quantities can produce large amounts of power, making it an attractive option for stable baseload energy.
Despite the progress, electricity generation will not begin immediately.
Experts say the plant must undergo several stages of testing and validation.
Professor Dr Shafiqul Islam of Dhaka University noted that initial generation typically begins at low capacity, around 5% to 10%, to assess system performance.
According to tentative timelines, initial generation of around 300 megawatts may begin between July and August 2026, followed by gradual scaling later in the year.
Full capacity of 1,200 megawatts from Unit 1 is expected in 2027.
Once both units are operational, the plant will have a total capacity of 2,400 megawatts, contributing an estimated 10% to 12% of Bangladesh’s electricity supply.
The Power Grid Company of Bangladesh has confirmed that transmission infrastructure is ready, with four major lines -- Rooppur–Baghabari (two circuits), Rooppur–Bogura and Rooppur–Gopalganj -- each capable of handling approximately 400 megawatts.
However, integrating such a large baseload facility into the national grid will require careful load balancing, frequency control and continuous monitoring, experts say.
Safety remains a central concern.
Authorities say the plant follows a multi-layered protection system, including fuel pellet containment, zirconium alloy cladding, reactor pressure vessels and reinforced concrete containment structures.
Advanced safety features such as passive cooling systems, core catchers and hydrogen recombiners have been incorporated, drawing on lessons from past nuclear incidents, including Fukushima.
Officials maintain that emergency preparedness and backup systems are in place, though experts stress that safety must be continuously monitored throughout the plant’s lifecycle.
While nuclear energy offers the advantage of low greenhouse gas emissions, radioactive waste management remains a long-term challenge.
Bangladesh has agreements with Russia for fuel supply and waste handling, including the potential return or reprocessing of spent fuel, though broader policy frameworks are still evolving.
Operating a nuclear power plant also requires a highly skilled workforce.
Authorities say Bangladeshi engineers have undergone extensive training, including international programs, with several already licensed for reactor operations.
Analysts, however, emphasize the need for continued investment in technical education to reduce dependence on foreign expertise.
From a climate and energy security perspective, the Rooppur project is expected to reduce reliance on imported fossil fuels, stabilize electricity supply and support industrial growth.
At the same time, environmental groups have highlighted the need for ongoing monitoring of radiation safety and water use, particularly from the Padma River.
The project is also expected to reshape Bangladesh’s power sector by improving reliability and supporting economic expansion.
However, challenges remain, including high loan repayment obligations, operational costs, dependence on foreign technology and long-term risk management.
