Jaitapur Nuclear Power Plant

The Jaitapur Nuclear Power Plant is a planned nuclear power project at Madban village in Ratnagiri district on the Konkan coast of Maharashtra. It is planned to have six large reactors of the French EPR design, with a total capacity of about 9,900 MW (6 × 1,650 MW). If built, it would be the largest nuclear power plant in the world by capacity.

NPCIL (Nuclear Power Corporation of India Limited) is to own and run it, and EDF of France is to supply the reactor technology.

Why does it matter?

India needs large amounts of clean electricity that runs all day and night. Solar power stops at sunset, and wind depends on weather. A large nuclear plant can supply steady "baseload" power for about 60 years. Jaitapur is also the flagship project of India-France civil nuclear cooperation, so its progress is a test of that partnership.

Where did it come from?

• September 2008: The Nuclear Suppliers Group (NSG) gave India a special waiver on 6 September 2008. This allowed countries to trade nuclear technology and fuel with India, even though India has not signed the Nuclear Non-Proliferation Treaty. On 30 September 2008, France became the first country to sign a civil nuclear cooperation agreement with India after this waiver.
• 6 December 2010: A General Framework Agreement for Jaitapur was signed between Areva (then France's reactor maker) and NPCIL, during a visit by the French President.
• 2010 to 2011: Local farmers and fishers protested strongly. They were worried about land loss, fishing and safety. One protester died in police firing in 2011.
• After 2011: Work slowed. Foreign suppliers were uneasy about India's 2010 nuclear liability law, and Areva ran into serious financial trouble.
• March 2018: Areva's reactor business had passed to EDF (the reactor-making arm is now called Framatome). EDF and NPCIL signed an Industrial Way Forward agreement for the project.
• April 2021: EDF submitted a binding techno-commercial offer (a firm price and technical proposal) to NPCIL.

What is an EPR?

EPR stands for European Pressurised Reactor (also marketed as Evolutionary Power Reactor). It was designed by France's Framatome and EDF with Germany's Siemens. It is a Generation III+ pressurised water reactor (PWR). In a PWR:

1. Enriched uranium fuel splits in the reactor core and makes heat.
2. Ordinary ("light") water flows around the core under very high pressure, so it gets very hot without boiling.
3. This hot water passes through a steam generator and boils a separate loop of water into steam.
4. The steam spins a turbine, which makes electricity.

Think of a pressure cooker: the high pressure lets water get far hotter than 100°C without boiling away.

Safety features of the EPR

• Four independent safety systems, each able to cool the reactor on its own. So even if two fail, two remain.
• A double-walled concrete containment building around the reactor, built to withstand strong impacts from outside.
• A core catcher: a special area under the reactor that catches and cools the melted fuel if a worst-case meltdown ever happens, so it stays inside the building.
• A design life of about 60 years and output of about 1,650 MW per unit.

Where are EPRs running?

• Taishan 1 and 2 (China): Taishan 1 became the world's first EPR connected to the grid (June 2018) and began commercial operation in December 2018. Taishan 2 followed in 2019.
• Olkiluoto 3 (Finland): Began regular operation in April 2023, about 14 years later than first planned.
• Flamanville 3 (France): First connected to the grid on 21 December 2024, after more than a decade of delay.
• Hinkley Point C (UK): Two EPRs under construction.

EDF has also developed a simpler version called EPR2 to cut cost and building time.

How will localisation work?

Big nuclear parts (reactor vessel, steam generators, pumps, valves, cables) are very costly to import. Making them in India lowers cost and creates jobs. EDF's argument is that a series of reactors, not one-off orders, lets Indian firms invest in factories and skills. This is economies of scale: making six identical reactors is cheaper per unit than making one.

India's position

India's own reactor fleet is mostly Pressurised Heavy Water Reactors (PHWRs). They use natural uranium and heavy water, and India can build them itself (700 MW units). Imported large reactors, such as Russia's VVER units at Kudankulam (Tamil Nadu) and the planned EPRs at Jaitapur, add capacity faster. Jaitapur sits in seismic zone III (moderate earthquake risk) and would use seawater for cooling.

Commonly confused concepts

• EPR (PWR) vs PHWR: An EPR uses enriched uranium and ordinary water. A PHWR uses natural (unenriched) uranium and heavy water. India's home-grown reactors are PHWRs.
• Jaitapur vs Kudankulam vs Kovvada: Jaitapur (Maharashtra) is planned with French EPRs. Kudankulam (Tamil Nadu) runs Russian VVER reactors. Kovvada (Andhra Pradesh) was planned with US Westinghouse AP1000 reactors.
• EDF vs Framatome vs Areva: Areva was the old French nuclear company. Its reactor business became Framatome, now controlled by EDF. EDF is France's state-owned power company.
• NSG waiver vs India-US 123 Agreement: The NSG waiver (September 2008) opened nuclear trade with all NSG members. The 123 Agreement is a separate bilateral deal only with the USA.

Issues, criticism and the way forward

• Cost: Estimates have been above ₹1 lakh crore. Critics say EPR electricity could be costlier than solar or India's own PHWRs. Supporters say localisation and multiple units will lower the tariff.
• Delays abroad: Long delays and cost overruns at Olkiluoto and Flamanville raise questions. Supporters note that Taishan was built faster and that later units usually get cheaper.
• Local concerns: Land, fisheries, marine life from warm-water discharge, and earthquake risk remain concerns for local people. Clear communication, fair compensation and strong safety checks are needed.
• Liability and clearances: The liability question was the main blocker for years. The SHANTI Act has addressed much of it. The project's environmental clearance also needs renewal before construction.
• Way forward: Finalise the SHANTI rules, agree on price, sign the final contract, and build a local supply chain.

Concepts to Know

• Baseload power: The minimum amount of electricity a grid needs all the time, day and night. Plants that run steadily (nuclear, coal, large hydro) usually supply it.
• Generation III+: A newer class of reactor designs with better safety features, longer life and simpler operation than older reactors.
• Nuclear Suppliers Group (NSG): A group of countries that control the export of nuclear materials and technology to stop the spread of nuclear weapons. India is not a member.
• Techno-commercial offer: A detailed proposal from a seller that gives both the technical design and the price.
• Seismic zone: India is divided into zones (II to V) by earthquake risk. Zone V is the highest risk.