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TERMOELECTRICA HORNITOS (CTH)

Coal power plant in Valparaiso, Chile. Approximate location -32.9006, -70.2633.

CoalValparaisoChile

TERMOELECTRICA HORNITOS (CTH) is a 154 MW coal power station in Valparaiso, Chile. It is operated by HORNITOS. Based on its capacity (estimated), it can supply roughly 192,594 homes (estimated). It ranks #35 of 315 Chile power plants by installed capacity. In context, coal supplies about 17.8% of Chile's electricity; the national grid averages 289 gCO₂/kWh (66.4% low-carbon) (2025).

154MW installed capacity
192,594homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CHL0000014.

~674,082 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

157,129passenger cars driven for a year
87,908homes' yearly energy use
11,234,700tree seedlings grown 10 years to absorb it

Estimated, not measured: from installed capacity at a typical 50% load factor × a typical coal emission factor (~1000 g CO₂/kWh, IPCC AR5 / US EIA). Actual emissions depend on plant efficiency and running hours.Equivalencies via US EPA Greenhouse Gas Equivalencies.

Capacity vs largest coal plants in Chile

TERMOELECTRICA TOCOPILLA (U12): 1,002 MW1kTERMOELECT…GUACOLDA: 760 MW760GUACOLDATERMOELECTRICA ANGAMOS 1(ANG1)_ 2(ANG2): 488 MW488TERMOELECT…BOCAMINA (I-II): 478 MW478BOCAMINA (…SANTA MARIA: 342 MW342SANTA MARIAVENTANAS: 322 MW322VENTANASTERMOELECTRICA MEJILLONES (CTM1): 319 MW319TERMOELECT…TERMOELECTRICA NORGENER (NTO2): 259 MW259TERMOELECT…

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

Owner

Operated by HORNITOS.

Local climate & thermal context

This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a polar tundra climate (Köppen ET) — Southern Hemisphere, latitude 32.9°S — which shapes how much energy it can produce and how its output varies through the year.

-2.3°Cannual mean temp
7,433heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
3,698 melevation

Monthly mean temperature

J: 4 °CJF: 3 °CFM: 2 °CMA: 0 °CAM: -4 °CMJ: -8 °CJJ: -8 °CJA: -7 °CAS: -6 °CSO: -4 °CON: -1 °CND: 2 °CD4 °C

Heating degree-days here run 202% 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: 100/100 — this site sits in the top 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 #12 largest coal power plant of 14 in Chile by capacity.

Chile has 14 coal power plants in this dataset, together about 4,839 MW of capacity.

Nearby power plants

Location

Coordinates -32.9006, -70.2633 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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