Rosal — Brazil
Hydro power plant in Espirito Santo, Brazil. Approximate location -20.9167, -41.7.
HydroEspirito SantoBrazil
Rosal is a 55 MW hydro power plant in Espirito Santo, Brazil. It is operated by Cemig Geração e Transmissão SA. Based on its capacity (estimated), it can supply roughly 55k homes (estimated). It ranks #443 of 2,572 Brazil power plants by installed capacity. Commissioned in 2000, it is around 26 years old — long-established. 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 BRA0002553.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100001022889; fuel: WRI GPPD
In context: how this plant compares
At 55 MW, Rosal is well above the median hydro plant in Brazil (11.5 MW). 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.
Key facts
- Share of Brazil hydro capacity
- less than 0.1% of 105,987 MW across 701 plants in this dataset
- Age among peers
- 233 of 658 dated hydro plants in Brazil are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest hydro plants in Brazil
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Cemig Geração e Transmissão SA.
Local climate & thermal context
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a humid subtropical (dry winter) climate (Köppen Cwa) — Southern Hemisphere, latitude 20.9°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.
Site climate & environmental severity
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.
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 #136 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.
Nearby power plants
- Calheiros · Hydro · 19 MW · Espirito Santo
- Franca Amaral · Hydro · 4.5 MW · Espirito Santo
- Pirapetinga · Hydro · 20 MW · Rio de Janeiro
- Alegre · Hydro · 2.06 MW · Espirito Santo
- Fumaça IV · Hydro · 4.5 MW · Minas Gerais
- Francisco Gross (Antiga Santa Fé) · Hydro · 29 MW · Espirito Santo
Location
Coordinates -20.9167, -41.7 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Rosal?
Rosal is a 55 MW hydro power plant in Espirito Santo, Brazil, commissioned in 2000.
Who operates Rosal?
Rosal is operated by Cemig Geração e Transmissão SA.