NEW DELHI: Anil Ambani-led Reliance Power is believed to have signed the power purchase agreement with the state-owned NTPC for its upcoming 100 MW solar power project at Jaisalmer in Rajasthan.Reliance Power signed the Power Purchase Agreement with NTPC Vidyut Vypar Nigam Ltd (NVVNL), a wholly-owned subsidiary of NTPC for its 100 MW Solar Thermal Power Project, sources in the know of development said.Reliance Power won this project in tariff-based competitive bidding under the government's Jawaharlal Nehru National Solar Mission.The project which is being set up in Jaisalmer is expected to be commissioned within the next 28 months i.e. by May 2013.Reliance Power spokesperson declined to comment on the development.The project will be implemented by Rajasthan Sun Technique Energy Private Ltd (RSTEPL) a subsidiary of Reliance Power.Reliance Power is currently generating 1,200 MW of electricity from its coal-based power project at Shahjahanpur in Uttar Pradesh, the total capacity of the project is 2,400 MW.The Jawaharlal Nehru National Solar Mission is a major initiative of the centre and state governments to promote ecologically sustainable growth while addressing India's energy security challenge.