A memorandum of understanding (MoU) for a Rs 15,000 crore gas pipeline project in Uttar Pradesh was signed here yesterday in the presence of Cheif Minister Rajnath Singh. The project, to be completed in four years, will provide natural gas for fertiliser and power plants in the state and adjoining areas of New Delhi, Singh said after the MoU was signed between Uttar Pradesh State Industrial Development Corporation (UPSIDC) and a US firm Unocal.