India restarts world's oldest nuclear reactors at Tarapur after refurbishment for low-carbon power

India has restarted Tarapur Units 1 and 2, the world's oldest commercial nuclear reactors, after extensive refurbishment. Originally commissioned in 1969, the 160 MWe boiling water reactors received safety upgrades including corrosion-resistant piping and filtered venting systems. The move adds low-carbon baseload power to India's grid and signals the country's ability to extend the life of legacy nuclear assets. The restart supports India's broader nuclear expansion plans and its push for more clean energy capacity. Unit 2 has been approved for another 10 years of operation. This is a practical example of how existing nuclear infrastructure can be modernized to contribute to grid decarbonization without building new plants from scratch.