Solution:The Kol Dam Project has been constructed on the River Sutlej. The dam was constructed by National Thermal Power Corporation (NTPC).The "Kol Dam" project, also known as the "Koldam Hydroelectric Power Project," is a significant hydroelectric project located on the Satluj River in the Bilaspur district of Himachal Pradesh, India, developed by the National Thermal Power Corporation (NTPC).
It is considered a major hydel project in Himachal Pradesh, supplying electricity to several Indian states including Delhi, Haryana, Punjab, Rajasthan, Uttar Pradesh, and Himachal Pradesh itself.