High Himalaya Hydro Construction Pvt. Ltd. (3HC) signed a contract agreement with Upper Tamakoshi Hydropower Limited (UTKHPL) on 14 November 2019 for the execution of “Construction of Exploratory Tunnels and Connecting Road of Rolwaling Khola Hydroelectric Project (RKHEP), Contract Number: RKHEP/ICB-01-2076/77”.