Chile - Embalse Ancoa

In April 2015, ANDRITZ HYDRO signed a contract with Hidroelectrica Embalse Ancoa S.p.A. for the supply of electro-mechanical equipment for the new Embalse Ancoa hydropower plant in Chile.

Located 200 km south of Santiago de Chile, in the region of Maule, in Linares province, the hydropower plant will use the waters of the Ancoa reservoir through a 130 meter-long penstock. The maximum flow of 26 m³/s was calculated by a mathematical model taking into account the yearly demand from an irrigation channel, which is fed by the units and, if required, by two relief valves. A 66 kV line with a length of 30 km will connect the power plant substation to the national grid.

The planned project will comprise a greenfield power house, for which ANDRITZ HYDRO will deliver two horizontal 13.75 MW Francis turbines, generators, mechanical auxiliaries, electrical power systems (EPS), automation as well as a tele control center.  Commissioning is scheduled for January 2017.

HPP Embalse Ancoa will provide about 86 GWh per year of clean energy to the Chilean Central Interconnected System (SIC).

Technical data

Output:27.5 MW / 32 MVA
Voltage:13.8 kV
Head:35 m – 120 m
Speed:428 rpm
Runner diameter:1,287 mm

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