Hydropower
A pumped storage type powerhouse has been built at the toe of the dam with an installed capacity of 12 MW (one unit of vertical Francis-reversible pump turbine) on the left bank of the dam, 65 m (213 ft) downstream from the axis of the dam. It operates under 20 percent load factor under a range of maximum head of 36.77 m (120.6 ft) and minimum head of 25.6 m (84 ft). The hydropower component involved construction of a 13.42 m (44.0 ft) high weir, 915 m (3,002 ft) below the Ujjani Dam to control the lower pond for operation during the pumping mode. A penstock pipe of 3.2 m (10 ft) diameter (12 mm (0.47 in) thick) and 70 m (230 ft) length embedded in the dam diverts the flow of 44 m3/s (1,600 cu ft/s) from a gate controlled trash racks (15 panels) covered intake into the powerhouse. The lower pond in the pumped storage scheme of operation was built initially itself, soon after commissioning of the dam. The power plant is reported to be providing benefits since then. However, the power generation estimated initially at 105 GWh was expected to reduce to 21 GWh, as water was utilized for irrigation through the RBC and LBC canal systems.
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