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Los Robles power station

Coal power plant in Maule, Chile. Approximate location -35.333333, -72.416667.

CoalMauleChile

Los Robles power station is a 750 MW coal power station in Maule, Chile. It is operated by AES Andes SA [100%]. Based on its capacity (estimated), it can supply roughly 939k homes (estimated). It ranks #8 of 336 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).

750MW installed capacity
938,571homes powered (est.)

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

Data status

Known data

FacilityLos Robles power station GEM-coal
CountryChile · Maule GEM-coal
Coordinates-35.333333, -72.416667 GEM-coal
FuelCoal GEM-coal
MW installed capacity750 MW GEM GCPT; source record
OwnerAES Andes SA [100%] GEM-coal

Calculated from dataset

CO₂ emissions3,285,000 t CO₂·a⁻¹ calculated
Capacity rank in country#8 / 336 calculated
Fuel-specific rank in country#6 / 22 calculated
Capacity vs country/fuel peers1.57× · 478 MW · n=22 calculated
Homes-powered equivalent938,571 calculated
Climate12.4°C · HDD 2,054 derived from coordinates
Environmental severityC4 · 34/100 derived from coordinates

Not available

CommissionedNot available not in dataset
TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.

capacity: GEM GCPT; fuel: GEM GCPT

In context: how this plant compares

At 750 MW, Los Robles power station is well above the median coal plant in Chile (478 MW). Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Capacity vs largest coal plants in Chile

Castilla power station: 2,100 MW2kCastilla p…Luz de Atacama power station: 1,410 MW1kLuz de Ata…Energía Minera power station: 1,050 MW1kEnergía Mi…TERMOELECTRICA TOCOPILLA (U12): 1,002 MW1kTERMOELECT…GUACOLDA: 760 MW760GUACOLDALos Robles power station: 750 MW750Los Robles…Punta Alcalde power station: 740 MW740Punta Alca…Río Corrientes power station: 700 MW700Río Corrie…

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

Owner

Operated by AES Andes SA [100%].

Local climate & thermal context

This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Southern Hemisphere, latitude 35.3°S — which shapes how much energy it can produce and how its output varies through the year.

12.4°Cannual mean temp
2,054heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
321 melevation

Monthly mean temperature

J: 18 °CJF: 17 °CFM: 15 °CMA: 12 °CAM: 10 °CMJ: 8 °CJJ: 8 °CJA: 8 °CAS: 10 °CSO: 12 °CON: 14 °CND: 16 °CD18 °C

Heating degree-days here run 16% 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: 44/100 — this site sits in the mid third of the power plants we cover by heating degree-days.

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.

Site climate & environmental severity

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with marine corrosion the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
34/100environmental-severity index
10.0°Cseasonal temperature swing
18 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby plants

The #6 largest coal power plant of 22 in Chile by capacity.

Chile has 22 coal power plants in this dataset, together about 12,437 MW of capacity.

Nearby power plants

Location

Coordinates -35.333333, -72.416667 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Los Robles power station?

Los Robles power station is a 750 MW coal power plant in Maule, Chile.

How many homes can Los Robles power station power?

Its output is enough to supply roughly 938,571 homes (estimated).

Who operates Los Robles power station?

Los Robles power station is operated by AES Andes SA [100%].

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