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Marchigüe II

Solar power plant in O'Higgins, Chile. Approximate location -34.406, -71.666.

SolarO'HigginsChile

Marchigüe II is a 9 MW solar power plant in O'Higgins, Chile. Based on its capacity (estimated), it can supply roughly 3,829 homes (estimated). It ranks #207 of 315 Chile power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, solar supplies about 25.1% of Chile's electricity; the national grid averages 289 gCO₂/kWh (66.4% low-carbon) (2025).

9MW installed capacity
3,829homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WKS0066167.

Capacity vs largest solar plants in Chile

El Romero: 196 MW196El RomeroBoléro: 146 MW146BoléroLuz del Norte: 141 MW141Luz del No…Finis Terrae: 138 MW138Finis Terr…Carrera Pinto ENEL: 135 MW135Carrera Pi…Blue Sky: 128 MW128Blue SkyLos Andes II: 120 MW120Los Andes …Quilapilún: 117 MW117Quilapilún

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

Local climate & thermal context

This solar plant converts sunlight directly into electricity with photovoltaic panels. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Southern Hemisphere, latitude 34.4°S — which shapes how much energy it can produce and how its output varies through the year.

15.8°Cannual mean temp
1,184heating degree-days (base 18°C)
365cooling degree-days (base 18°C)
171 melevation

Monthly mean temperature

J: 22 °CJF: 22 °CFM: 19 °CMA: 16 °CAM: 12 °CMJ: 10 °CJJ: 10 °CJA: 11 °CAS: 13 °CSO: 16 °CON: 18 °CND: 21 °CD22 °C

Heating degree-days here run 52% 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: 28/100 — 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.

Solar PV loses ~0.35%/°C above 25°C cell temperature — roughly 0.0% at warm-season highs here (estimate).

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 #63 largest solar power plant of 77 in Chile by capacity.

Chile has 77 solar power plants in this dataset, together about 3,954 MW of capacity.

Nearby power plants

Location

Coordinates -34.406, -71.666 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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