Cahua Hydropower Plant

Cahua is located 260 km to the north of the city of Lima, and 60 km from the highlands, on the left bank of the Pativilca river (upstream view), at an elevation of 880 masl.

The Plant

Private company Hidrandina started commercial operations of the Cahua Hydropower Plant in 1967.  The company Cahua S.A. was incorporated in 1994, and a year later, as part of the privatization of state-owned companies, all assets of the Cahua hydropower plant were transferred to the new company.  In 2003, Cahua S.A. was acquired by SN Power Peru.  Finally, in 2014, Statkraft, main shareholder of SN Power Peru, took over its assets and operation.

Operation

Cahua is a run-of-river hydropower plant that generates power by turbining the water of the Pativilca river.  As a result of the automation of the plant by the end of 2014, the plant is remotely operated from the dispatch center in Lima.  An overhaul of the plant was undertaken in 2013 and 2014, aimed at reducing the rate of failure and, therefore the operating cost.  The condition of the major equipment was assessed in order to increase their efficacy and efficiency.

Corporate Responsibility

Statkraft Peru implements sustainable development projects aimed at the management of good agricultural practices for fruit production, and activities focused on improving local educational capacities.  Additionally, environmental controls are in place as part of the environmental monitoring program and solid waste integral management.

Facts and figures

  • Location: district of Manás, province of Cajatambo, Lima region
  • Water source: Pativilca river basin
  • Installed capacity: 43.00 MW
  • Effective capacity: 43.11 MW
  • Type: hydropower
  • Annual output: 290 GWh
  • Net head: 215 m
  • Design flow: 22 m3/S
  • Equipment: vertical shaft Francis turbines, powerhouse, 2 generation units
  • Construction: completed in 1967
  • Operation: Since November 1967