India has signed a deal with China to build a total of 12 new nuclear reactors and solar plants.
The deal was announced on the sidelines of the Nuclear Security Summit in New Delhi.
India’s first nuclear reactor, in the southern state of Kerala, was built in 2008.
The country is currently in talks to build the second, in Bengaluru.
The agreement comes as China continues to expand its nuclear programme.
A nuclear submarine, the Type 088, has been constructed in the Pacific.
China is also building three new nuclear power plants, including one in Shanghai.
India is also in talks with France to build nuclear reactors in the Gulf of Mexico.
The United States has been a long-term supporter of nuclear energy, but in recent years has become increasingly reluctant to give India a free pass on the issue.
In 2015, US President Donald Trump said the country was “getting closer and closer” to nuclear power, but that the country’s energy security was not yet on par with that of China.
China, on the other hand, has a nuclear arsenal that could provide a strong deterrent against the US.
India and China have long had a rivalry.
India is India’s second-largest trading partner after the US and has been the biggest investor in China’s construction of its nuclear programmes.
The two countries share about 40 per cent of the world’s population.