Hydro power plant in San Juan, Argentina. Approximate location -31.3891, -68.6752.
HydroSan JuanArgentina
SALTO GRANDE (MITAD ARGENTINA) is a 945 MW hydro power station in San Juan, Argentina. It is operated by CTMSG. Based on its capacity (estimated), it can supply roughly 946,080 homes (estimated). It ranks #7 of 236 Argentina power plants by installed capacity. Commissioned in 1980, it is around 46 years old — long-established. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 17.1% of Argentina's electricity; the national grid averages 346 gCO₂/kWh (41.6% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id ARG0000144.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by CTMSG.
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a cold desert climate (Köppen BWk) — Southern Hemisphere, latitude 31.4°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 52% 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: 28/100 — 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 #5 largest hydro power plant of 50 in Argentina by capacity.
Argentina has 50 hydro power plants in this dataset, together about 10,000 MW of capacity.
Coordinates -31.3891, -68.6752 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
