Home / South America / Chile / Maitencillo power station

Maitencillo power station

Oil power plant in Atacama, Chile. Approximate location -28.507668, -70.91894.

OilAtacamaChileEngine

Maitencillo power station is a 68.4 MW oil power plant in Atacama, Chile. It is operated by Empresa Eléctrica de Vallenar SA [100%]. Based on its capacity (estimated), it can supply roughly 51k homes (estimated). It ranks #107 of 336 Chile power plants by installed capacity. Commissioned in 2024, it is around 2 years old — recently built. In context, oil supplies about 0.6% of Chile's electricity; the national grid averages 289 gCO₂/kWh (66.4% low-carbon) (2025).

68.4MW installed capacity
51,358homes powered (est.)
2024commissioned (~2 yrs)

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

Data status

Known data

FacilityMaitencillo power station GEM-GOGPT
CountryChile · Atacama GEM-GOGPT
Coordinates-28.507668, -70.91894 GEM-GOGPT
FuelOil GEM-GOGPT
MW installed capacity68.4 MW GEM · 2026 · L100000408906; operating plant capacity
OwnerEmpresa Eléctrica de Vallenar SA [100%] GEM-GOGPT
Commissioned2024 GEM-GOGPT
TechnologyEngine GEM-GOGPT

Calculated from dataset

CO₂ emissions134,816 t CO₂·a⁻¹ calculated
Capacity rank in country#107 / 336 calculated
Fuel-specific rank in country#21 / 78 calculated
Capacity vs country/fuel peers6.05× · 11.3 MW · n=78 calculated
Homes-powered equivalent51,358 calculated
Environmental severityC4 · 47/100 derived from coordinates

Not available

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/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: GEM · 2026 · L100000408906; fuel: GEM GOGPT

In context: how this plant compares

At 68.4 MW, Maitencillo power station is well above the median oil plant in Chile (11.3 MW). Technically it is described as Engine. Oil-fired plants burn heavy fuel oil or diesel, usually as peaking or backup capacity on islands and grids without gas pipelines; high fuel cost keeps their utilisation low.

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

Capacity vs largest oil plants in Chile

NUEVA RENCA: 379 MW379NUEVA RENCAQUINTERO: 248 MW248QUINTEROCala Morritos power station: 200 MW200Cala Morri…Canelillo power station: 200 MW200Canelillo …YUNGAY: 180 MW180YUNGAYCARDONES: 154 MW154CARDONESSANTA LIDIA: 141 MW141SANTA LIDIALOS VIENTOS: 132 MW132LOS VIENTOS

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

Owner

Operated by Empresa Eléctrica de Vallenar SA [100%].

Climate zone & how it works

This oil plant burns oil or diesel to drive turbines or reciprocating engines. It sits in a cold desert climate (Köppen BWk) — Southern Hemisphere, latitude 28.5°S — which shapes how much energy it can produce and how its output varies through the year.

~11°Ctypical annual mean
~26°Ctypical warm-season mean
Cold desert: hot summers and mild winters

Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

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 dust abrasion the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
47/100environmental-severity index
6.6°Cseasonal temperature swing
49 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 #21 largest oil power plant of 78 in Chile by capacity.

Chile has 78 oil power plants in this dataset, together about 3,578 MW of capacity.

Nearby power plants

Location

Coordinates -28.507668, -70.91894 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Maitencillo power station?

Maitencillo power station is a 68.4 MW oil power plant in Atacama, Chile, commissioned in 2024.

How many homes can Maitencillo power station power?

Its output is enough to supply roughly 51,358 homes (estimated).

Who operates Maitencillo power station?

Maitencillo power station is operated by Empresa Eléctrica de Vallenar SA [100%].

Built from open public data; no personal information. Operate this site? Request a correction or removal.