The generation plant began operations in 1972 with an effective capacity of 120 MW. Its specific production is in the order of 2.33 kWh/m3.
The intake is connected to the plant through a 20-km tunnel. Matucana’s surge tank at is made up of two 500-metre-long underground chambers, with a capacity of 30,000 m3 each. Thanks to these chambers, the plant’s nominal capacity may run up to three hours, even in dry periods.
Installed capacity: 140 MW
Effective capacity: 137.02 MW
Average annual generation: 867 GWh
Flow rate: 15.8 m3/sec
Gross head: 987 m
Turbine: Horizontal shaft double Pelton
Number of units: 2
Commissioning (first unit): 1971
64.5 km east of Lima. District of San Jerónimo de Surco, Province of Huarochirí, Department of Lima.
Run-of-river power station. Water comes from the Rímac River and the Yuracmayo Reservoir.