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The West poured $50 billion into fast breeder nuclear reactors and abandoned every single one. India poured $900 million and just achieved criticality on the first commercially viable one outside Russia.
The US spent $15 billion. Gave up. Japan spent $12 billion. Their Monju prototype had one sodium fire in 1995 and never recovered. The UK spent $8 billion. Germany spent $6 billion. France, Italy, all walked away. Six of the richest nations on Earth concluded this technology was too hard and too expensive to pursue.
India started building in 2004 with an initial budget of $420 million. Twenty-two years, a dozen missed deadlines, and a cost doubling later, the Prototype Fast Breeder Reactor at Kalpakkam just sustained a controlled fission chain reaction. The reactor is now alive.
The reason India never quit is a constraint most people have never thought about. India has only 1-2% of the world's uranium reserves. For a country of 1.4 billion people trying to build energy independence, that's a death sentence if you're running conventional nuclear.
But India has 25% of the world's thorium. The single largest national reserve on Earth.
The problem: you can't just burn thorium the way you burn uranium. A physicist named Homi Bhabha designed a three-stage nuclear program in the 1950s specifically to solve this. Stage 1: burn natural uranium in heavy water reactors, collect plutonium as a byproduct. Stage 2: feed that plutonium into fast breeder reactors, where it breeds MORE plutonium AND converts thorium into fissile uranium-233. Stage 3: burn thorium directly at scale.
India just entered Stage 2. Seventy years after Bhabha drew it up on paper.
The math on the thorium endgame is wild. At current energy consumption rates, India's thorium reserves could power the country for over 700 years. Most nuclear nations are playing a uranium game with maybe 80-100 years of runway. India is playing a completely different game with a 7x longer fuel supply.
The West quit because uranium stayed cheap and sodium coolant is terrifying. It catches fire on contact with air. It explodes on contact with water. Russia's BN-600 had 27 sodium leaks and 14 sodium fires between 1980 and 1997. And Russia kept going anyway because Russia doesn't quit nuclear projects. India watched all of that and kept going too.
When you have 1% of the uranium but 25% of the thorium, the engineering difficulty stops being a reason to quit. It becomes the price of admission to a 700-year energy supply that nobody else can access.
Narendra Modi@narendramodi
Today, India takes a defining step in its civil nuclear journey, advancing the second stage of its nuclear programme. The indigenously designed and built Prototype Fast Breeder Reactor at Kalpakkam has attained criticality. This advanced reactor, capable of producing more fuel than it consumes, reflects the depth of our scientific capability and the strength of our engineering enterprise. It is a decisive step towards harnessing our vast thorium reserves in the third stage of the programme. A proud moment for India. Congratulations to our scientists and engineers.
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