Kadakin argued that even if India somehow acquired global oil output, it wouldn't prove sufficient for the country's long-term energy needs.
Kadakin spoke to journalists after inaugurating a Russian consular office in Panaji, observing.
"Nuclear power is the only way out of the situation," Kadakin said. "It can make India self-sufficient in energy. Otherwise, even if India buys all the oil in the world, it would not be sufficient for its energy needs."
The comments appeared in a report in The Times of India.
Kadakin added that the Russian Federation was in discussions with India to construct a third and fourth reactor at India's Kudankulam nuclear power plant in Tamil Nadu state. He didn't rule out collaboration as far as units five and six are concerned.
The ambassador also downplayed environmental concerns about the facility, labeling Kudankulam as one of the safest nuclear power facilities in the world, commenting that it could resist the strongest of tornadoes or even direct impact by an aircraft.