NTPC chairman and managing director Arup Roy Choudhury said they are contemplating cooperation from the US to harness the geo-thermal project for which it has already signed a memorandum of understanding with the Chhattisgarh government.
"We may need to send a team to the US to identify agencies for collaboration. But this will be taken at the government level after the Prime Minister's visit to the US.
"At present, the geo-thermal project is at an exploratory stage and the DPR is being prepared," Choudhury said on the sidelines of The Bengal Chamber-organised environment and energy conclave here today.
NTPC first signed a MoU with the Chhattisgarh Renewable Energy Development Agency to set up the project at Tattapani. It signed the second MOU in January this year with the Geological Survey of India for preparation of a detailed project report.
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Geo-thermal technology involves utilisation of heat from rocks and fluids in the earth's crust to generate electricity.
Speaking about exploring renewables, Choudhury said NTPC is laying emphasis on developing a solar portfolio and had invited tender for 1,000 MW of solar power project.
NTPC aims to set up 3,000 MW of solar power project over the next 3-3.5 years.
He, however, made clear that the company has put thermal power projects worth 22,000 MW under execution and 8,000-10,000 MW is under pipeline.
Choudhury said prima facie it is not affected by the recent Supreme Court order on allocation of coal blocks and its coal mining operations will proceed.