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PEHUENCHE

Hydro power plant in Maule, Chile. Approximate location -35.7338, -71.1555.

HydroMauleChile

PEHUENCHE is a 570 MW hydro power station in Maule, Chile. It is operated by EMPRESA ELECTRICA PEHUENCHE S.A.. Based on its capacity (estimated), it can supply roughly 570,651 homes (estimated). It ranks #6 of 315 Chile power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 22.2% of Chile's electricity; the national grid averages 289 gCO₂/kWh (66.4% low-carbon) (2025).

570MW installed capacity
570,651homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CHL0001092.

Capacity vs largest hydro plants in Chile

RALCO: 690 MW690RALCOPEHUENCHE: 570 MW570PEHUENCHECOLBUN: 474 MW474COLBUNPANGUE: 467 MW467PANGUEEL TORO: 450 MW450EL TORORAPEL: 378 MW378RAPELANGOSTURA: 324 MW324ANGOSTURAANTUCO: 320 MW320ANTUCO

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by EMPRESA ELECTRICA PEHUENCHE S.A.. All plants by this company →

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Southern Hemisphere, latitude 35.7°S — which shapes how much energy it can produce and how its output varies through the year.

10.1°Cannual mean temp
2,901heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
1,127 melevation

Monthly mean temperature

J: 17 °CJF: 16 °CFM: 14 °CMA: 10 °CAM: 7 °CMJ: 4 °CJJ: 4 °CJA: 5 °CAS: 7 °CSO: 10 °CON: 12 °CND: 15 °CD17 °C

Heating degree-days here run 18% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 60/100 — this site sits in the mid third of the power plants we cover by heating degree-days.

In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

How it compares & nearby plants

The #2 largest hydro power plant of 99 in Chile by capacity.

Chile has 99 hydro power plants in this dataset, together about 6,410 MW of capacity.

Nearby power plants

Location

Coordinates -35.7338, -71.1555 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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