NTPC Vidyut Vyapar Nigam Limited (NVVN), a wholly-owned subsidiary of NTPC, has invited bids for the design, engineering, construction, and commissioning of 1 MW rooftop solar power projects at the Indian Institute of Technology (IIT) Jodhpur for captive consumption. The successful bidder will also have to take care of the operation and maintenance (O&M) activities for ten years.