Sevan-Hrazdan Cascade is a 561 MW hydro power station in Kotayk'i Marz, Armenia. It is operated by RusHydro. Based on its capacity (estimated), it can supply roughly 562k homes (estimated). It ranks #3 of 11 Armenia power plants by installed capacity. 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 WRI1003805.
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
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
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 Armenia hydro capacity
- 58.1% of 965 MW across 4 plants in this dataset
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 Armenia
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by RusHydro. All plants by this company →
Local climate & thermal context
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 40.5°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 126% 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: 97/100 — this site sits in the top third of the power plants we cover by heating degree-days.
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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), 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 #1 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.
Nearby power plants
- Hrazadan · Gas · 1,110 MW · Geghark'unik'i Marz
- Hrazdan power station · Gas · 1,381 MW · Kotayk
- Vanadzor (Anaklia) power station · Gas · 540 MW · Lori
- Yerevan · Gas · 550 MW · Yerevan
- New Yerevan · Gas · 271 MW · Ararat
- Armenian-2 · Nuclear · 448 MW · Armavir
Location
Coordinates 40.5078, 44.7606 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Sevan-Hrazdan Cascade?
Sevan-Hrazdan Cascade is a 561 MW hydro power plant in Kotayk'i Marz, Armenia.
Who operates Sevan-Hrazdan Cascade?
Sevan-Hrazdan Cascade is operated by RusHydro.