Hydro power plant in Espirito Santo, Brazil. Approximate location -19.5005, -40.9185.
HydroEspirito SantoBrazilconventional and run-of-river
Mascarenhas is a 198 MW hydro power station in Espirito Santo, Brazil. It is operated by EDP Brasil SA [100%]. Based on its capacity (estimated), it can supply roughly 198k homes (estimated). It ranks #200 of 2,572 Brazil power plants by installed capacity. Commissioned in 1973, it is around 53 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 51.8% of Brazil's electricity; the national grid averages 110 gCO₂/kWh (88.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id BRA0001432.
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 operating-unit sum (location L100000600297); fuel: WRI source-record fuel
At 198 MW, Mascarenhas is well above the median hydro plant in Brazil (12 MW). Technically it is described as conventional and run-of-river. Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
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 EDP Brasil SA [100%].
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a tropical savanna climate (Köppen Aw) — Southern Hemisphere, latitude 19.5°S — 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 #79 largest hydro power plant of 701 in Brazil by capacity.
Brazil has 701 hydro power plants in this dataset, together about 105,987 MW of capacity.
Coordinates -19.5005, -40.9185 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Mascarenhas is a 198 MW source-record hydro power plant in Espirito Santo, Brazil, commissioned in 1973.
Its output is enough to supply roughly 198,226 homes (estimated).
Mascarenhas is operated by EDP Brasil SA [100%].
