IVAILOVGRAD is a 114 MW hydro power station in Khaskovo, Bulgaria. It is operated by Natsionalna Elektricheska Kompania (NEK) [100%]. Based on its capacity (estimated), it can supply roughly 114k homes (estimated). It ranks #26 of 55 Bulgaria power plants by installed capacity. Commissioned in 1964, it is around 62 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 6.7% of Bulgaria's electricity; the national grid averages 276 gCO₂/kWh (71.9% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1008048.
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 · L100000600366; fuel: WRI GPPD
In context: how this plant compares
At 114 MW, IVAILOVGRAD is below the median hydro plant in Bulgaria (135 MW). Technically it is described as conventional storage. 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 Bulgaria hydro capacity
- 5.8% of 1,958 MW across 7 plants in this dataset
- Age among peers
- 2 of 5 dated hydro plants in Bulgaria 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 Bulgaria
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Natsionalna Elektricheska Kompania (NEK) [100%].
Local climate & thermal context
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 41.6°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 9% 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: 47/100 — this site sits in the mid 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 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 #6 largest hydro power plant of 7 in Bulgaria by capacity.
Bulgaria has 7 hydro power plants in this dataset, together about 1,958 MW of capacity.
Nearby power plants
- Yerusalimovo · Solar · 7.7 MW · Khaskovo
- MYTOULA · Wind · 38 MW · East Macedonia and Thrace
- DIDIMOS LOFOS · Wind · 26 MW · East Macedonia and Thrace
- Maritsa Itzok-3 power station · Coal · 908 MW · Stara Zagora
- KARDZHALI · Hydro · 110 MW · Kurdzhali
- Brikel power station · Coal · 200 MW · Stara Zagora
Location
Coordinates 41.5839, 26.1075 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is IVAILOVGRAD?
IVAILOVGRAD is a 114 MW hydro power plant in Khaskovo, Bulgaria, commissioned in 1964.
Who operates IVAILOVGRAD?
IVAILOVGRAD is operated by Natsionalna Elektricheska Kompania (NEK) [100%].