Geothermal power plant in Guanacaste, Costa Rica. Approximate location 10.718, -85.1819.
GeothermalGuanacasteCosta Rica
Miravalles III Geothermal Power Plant Costa Rica is a 28 MW geothermal power plant in Guanacaste, Costa Rica. Based on its capacity (estimated), it can supply roughly 51,621 homes (estimated). It ranks #18 of 27 Costa Rica power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, geothermal supplies about 11.9% of Costa Rica's electricity; the national grid averages 24 gCO₂/kWh (100.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEODB0043642.
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 10.7°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 100% 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: 13/100 — this site sits in the bottom 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.
The #3 largest geothermal power plant of 5 in Costa Rica by capacity.
Costa Rica has 5 geothermal power plants in this dataset, together about 199 MW of capacity.
Coordinates 10.718, -85.1819 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
