Tatev is a 158 MW hydro power station in Syunik'i Marz, Armenia. It is operated by Ministry of Energy an Natural Resources. Based on its capacity (estimated), it can supply roughly 158,180 homes (estimated). It ranks #7 of 8 Armenia power plants by installed capacity. Commissioned in 1970, it is around 56 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 28.0% of Armenia's electricity; the national grid averages 212 gCO₂/kWh (65.9% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1019029.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by Ministry of Energy an Natural Resources. All plants by this company →
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 39.4°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 17% above 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: 59/100 — this site sits in the mid 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 hydro power plant of 4 in Armenia by capacity.
Armenia has 4 hydro power plants in this dataset, together about 965 MW of capacity.
Coordinates 39.3956, 46.2578 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
