Top-5 Indian States with Largest Nuclear Energy Capacity

Nuclear power is an important part of India’s energy mix, helping the country meet its growing electricity needs in a clean and reliable way. Several states have established nuclear power plants that contribute a major share to the nation’s total capacity. Among them, a few states stand out for hosting the largest and most powerful reactors, making them leaders in India’s nuclear energy production.

Top-5 Indian States with Largest Nuclear Energy Capacity

Tamil Nadu leads the country in nuclear energy capacity with the 2,440 MW nuclear capacity. The list is followed by Gujarat, Rajasthan and Mahashtra.

Here are the names of top-5 Indian states with the largest nuclear energy capacity:

Rank	State	Installed Nuclear Capacity (MW)
1.	Tamil Nadu	2,440
2.	Gujarat	1,840
3.	Rajasthan	1,780
4.	Maharashtra	1,400
5.	Karnataka	880

Tamil Nadu

Tamil Nadu is the leader in India’s nuclear power generation with 2,440 MW. The state is home to the Kudankulam Nuclear Power Plant, the largest in the country, and the Madras Atomic Power Station. Together, these plants supply a huge share of electricity to the national grid and make Tamil Nadu a powerhouse in advancing India’s clean and reliable nuclear energy.

Gujarat

Gujarat ranks second with 1,840 MW of nuclear capacity, led by the Kakrapar Atomic Power Station. The plant has expanded with new reactors in recent years, boosting Gujarat’s role in India’s atomic power sector. Strong infrastructure, steady growth, and supportive policies have helped Gujarat become one of the most important states for nuclear energy development in the country.

Rajasthan

Rajasthan contributes 1,780 MW, mainly from the Rawatbhata Nuclear Power Plant, also called the Rajasthan Atomic Power Station. It houses multiple reactors and is the biggest nuclear facility in North India. Rajasthan has been a pioneer in nuclear energy since the early years, and its reactors continue to play a vital role in supplying clean power to industries and households in the region.

Maharashtra

Maharashtra has 1,400 MW of nuclear capacity, largely due to the Tarapur Atomic Power Station. Tarapur is India’s oldest commercial nuclear plant, which started operations decades ago and still contributes significantly. Over time, modern reactors have been added, making Maharashtra a consistent player in nuclear power. The state benefits from this clean source of energy, which supports both urban and industrial growth.

Karnataka

Karnataka’s nuclear energy contribution is 880 MW, produced by the Kaiga Generating Station. Located in the Western Ghats, the plant supplies safe and reliable power to the region. While smaller compared to Tamil Nadu or Gujarat, Karnataka’s nuclear plant is important for meeting local demand. The state also has plans for future expansion, showing its commitment to supporting India’s clean and sustainable energy goals.