Geothermal power plant in Escuintla, Guatemala. Approximate location 14.41, -90.607.
GeothermalEscuintlaGuatemala
Ortitlán is a 25 MW geothermal power plant in Escuintla, Guatemala. Based on reported annual generation of 137 GWh, it can supply roughly 39k homes. It ranks #45 of 77 Guatemala power plants by installed capacity. Commissioned in 2007, it is around 19 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, geothermal supplies about 2.2% of Guatemala's electricity; the national grid averages 301 gCO₂/kWh (68.3% low-carbon) (2024).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1061454.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
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: WRI Global Power Plant Database source-record (legacy); fuel: WRI source-record fuel
Geothermal plants tap underground heat to raise steam for a turbine; they provide steady, low-carbon baseload but are limited to geologically active regions.
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).
This geothermal plant taps underground heat to raise steam that drives a turbine. It sits in a tropical savanna climate (Köppen Aw) — Northern Hemisphere, latitude 14.4°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
This site has effectively no heating season (tropical/equatorial climate), so winter heat loss is not the driver here. The thermal concern shifts to year-round process heat and humidity/heat-driven corrosion of hot equipment.
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 humidity / wetness 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 #2 largest geothermal power plant of 2 in Guatemala by capacity.
Guatemala has 2 geothermal power plants in this dataset, together about 54 MW of capacity.
Coordinates 14.41, -90.607 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Ortitlán is a 25 MW source-record geothermal power plant in Escuintla, Guatemala, commissioned in 2007.
Ortitlán generates about 137 GWh of electricity per year.
Its output is enough to supply roughly 39,142 homes.
