Solution:The Rana Pratap Sagar Dam is a gravity masonry dam, built on the Chambal River at Rawatbhat in Rajasthan.Under the joint Chambal Valley Project of the states of Rajasthan and Madhya Pradesh, in the year 1968, the 172 MW capacity hydroelectric powerhouse established on the Rana Pratap Sagar dam on the Chambal river was inaugurated by the then Prime Minister late Indira Gandhi. After its establishment in the year 1968, the cheapest and greenest electric energy of Rs 2,365 crore unit has been produced from this powerhouse. Four units of the hydroelectric power plant were completely submerged in the severe water hazard that arose on September 14, 2019 in the Chambal river. A revival plan was proposed for re-generation of power from these 51-year-old units, in which it was estimated that the units would remain closed for 5-6 years.