Upper Mai C Hydroelectric Project is situated in the Mabu and Sulubung areas of Sandakpur Rural Municipality, Illam District. The Upper Mai Hydroelectric Project (6.1 MW) is designed as a run of-river scheme. This project is owned by Panchakanya Mai Hydropower Limited.

The project utilizes the elevation difference and flow of the Mai Khola to generate electricity. Upper Mai C is a cascade project that uses the discharge from the tailrace of the Upper Mai Hydropower Station and additional discharge from streams that flow into the Mai River. The catchment area at the intake is 70 square kilometres (27 sq mi). The design discharge is 4.62 cubic metres per second (163 cu ft/s) with a net head of 155.25 metres (509.4 ft) at full discharge.

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