IDAMALAYAR is a 75 MW hydro power plant in Kerala, India. Based on reported annual generation of 344 GWh, it can supply roughly 98,228 homes. It ranks #618 of 1,908 India power plants by installed capacity. Commissioned in 1987, it is around 39 years old — long-established. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 8.6% of India's electricity; the national grid averages 670 gCO₂/kWh (26.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id IND0000148.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a tropical savanna climate (Köppen Aw) — Northern Hemisphere, latitude 10.2°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 #121 largest hydro power plant of 233 in India by capacity.
India has 233 hydro power plants in this dataset, together about 45,562 MW of capacity.
Coordinates 10.207, 76.7137 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
