Gas power plant in Valparaiso, Chile. Approximate location -32.946, -71.3388.
GasValparaisoChile
SAN ISIDRO II is a 406 MW gas power station in Valparaiso, Chile. It is operated by EMPRESA NACIONAL DE ELECTRICIDAD S.A.. Based on its capacity (estimated), it can supply roughly 458k homes (estimated). It ranks #24 of 336 Chile power plants by installed capacity. In context, gas supplies about 15.3% of Chile's electricity; the national grid averages 289 gCO₂/kWh (66.4% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id CHL0000122.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
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 tracker 2026 (location L100000406562); fuel: WRI source-record fuel
At 406 MW, SAN ISIDRO II is around the median gas plant in Chile (379 MW). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by EMPRESA NACIONAL DE ELECTRICIDAD S.A..
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Southern Hemisphere, latitude 32.9°S — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 46% 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: 31/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.
A gas turbine here also runs ~0% below its ISO (15°C) rating at this annual mean (typical CCGT curve, 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.
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.
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.
The #8 largest gas power plant of 19 in Chile by capacity.
Chile has 19 gas power plants in this dataset, together about 6,512 MW of capacity.
Coordinates -32.946, -71.3388 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
SAN ISIDRO II is a 406 MW source-record gas power plant in Valparaiso, Chile.
Its output is enough to supply roughly 457,722 homes (estimated).
SAN ISIDRO II is operated by EMPRESA NACIONAL DE ELECTRICIDAD S.A..
