Location: On River Giri, a tributary of the Yamuna, in Renuka tehsil of Sirmaur district, Himachal Pradesh Objective: To supply 1,240 mld water to Delhi for nine months a year and 40 MW electricity to Himachal Pradesh Cost: Rs 2,700 crore; Centre will bear 90 per cent of the project cost Dam height: 148 metres, about the height of a 50-storey building Reservoir Length: 24 km