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AUXILIAR DEL MAIPO (CAEMSA)

Hydro power plant in Santiago Metropolitan, Chile. Approximate location -33.6427, -70.6331.

HydroSantiago MetropolitanChile

AUXILIAR DEL MAIPO (CAEMSA) is a 5 MW hydro power plant in Santiago Metropolitan, Chile. It is operated by CARBOMET ENERGIA S.A.. Based on its capacity (estimated), it can supply roughly 5,005 homes (estimated). It ranks #241 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).

5MW installed capacity
5,005homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CHL0001007.

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 CARBOMET ENERGIA 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 33.6°S — which shapes how much energy it can produce and how its output varies through the year.

14.6°Cannual mean temp
1,456heating degree-days (base 18°C)
205cooling degree-days (base 18°C)
870 melevation

Monthly mean temperature

J: 21 °CJF: 20 °CFM: 18 °CMA: 15 °CAM: 12 °CMJ: 9 °CJJ: 8 °CJA: 10 °CAS: 11 °CSO: 14 °CON: 17 °CND: 20 °CD21 °C

Heating degree-days here run 41% below 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: 33/100 — this site sits in the bottom 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 #68 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 -33.6427, -70.6331 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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