WASHINGTON:  Stating that India has "one of the largest nuclear power programs" among developing nations, a US-based think-tank said by the end of 2014 India had enough weapon-grade plutonium to possess an estimated stock of atomic weapons in the range of 75-125.

An estimate of India's nuclear arsenal can be derived by considering its weapon-grade plutonium stock. The resulting estimate has a median of 138 nuclear weapons equivalent with a range of 110 to 175 weapons equivalent," a report released by Institute for Science and International Security said.

Thus the predicted number of weapons made from its weapon-grade plutonium at the end of 2014 is about 97 with a range of 77-123. These values are rounded to 100 nuclear weapons with a range of 75-125 nuclear weapons," the report co-authored by David Albright and Serena Kelleher-Vergantini said.

The report 'India's Stocks of Civil and Military Plutonium and Highly Enriched Uranium, End 2014' concludes that India has "one of the largest nuclear power programs among developing nations".

The report estimated that India has made 100-200 kilograms of weapon-grade uranium for nuclear weapons.

Noting that an estimate of India's nuclear arsenal can be derived by considering its plutonium and highly enriched uranium stocks, the report said India separates plutonium produced primarily in a set of small, dedicated reactors and a smaller amount produced in nuclear power reactors.

However, India also has a growing gas centrifuge program capable of producing significant amounts of HEU mostly for naval reactor fuel and perhaps for nuclear weapons, including thermonuclear weapons," it said and alleged that India is not transparent about its fissile material stocks.