Visonta is a 14.4 MW solar power plant in Heves, Hungary. Based on its capacity (estimated), it can supply roughly 6.1k homes (estimated). It ranks #37 of 37 Hungary power plants by installed capacity. Commissioned in 2017, it is around 9 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, solar supplies about 27.3% of Hungary's electricity; the national grid averages 163 gCO₂/kWh (75.3% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WKS0066591.
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 · L100001005721; fuel: WRI GPPD
In context: how this plant compares
At 14.4 MW, Visonta is below the median solar plant in Hungary (20 MW). Technically it is described as Assumed PV. Solar PV converts sunlight directly into electricity with no moving parts or fuel; output varies by time of day and weather, so it pairs with storage or flexible backup.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Hungary solar capacity
- 15.2% of 95 MW across 5 plants in this dataset
- Age among peers
- 0 of 5 dated solar plants in Hungary are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest solar plants in Hungary
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Local climate & thermal context
This solar plant converts sunlight directly into electricity with photovoltaic panels. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 47.8°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 24% 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: 63/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
Solar PV loses ~0.35%/°C above 25°C cell temperature — roughly 0.0% at warm-season highs here (estimate).
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 #5 largest solar power plant of 5 in Hungary by capacity.
Hungary has 5 solar power plants in this dataset, together about 95 MW of capacity.
Nearby power plants
- Matra power station · Coal · 944 MW · Heves
- Matraterenye power station · Coal · 49.9 MW · Nógrád
- Lőrinci Gázturbinás Erőmű · Oil · 173 MW · Heves
- Kralova Hydroelectric Power Plant Slovakia · Hydro · 45.1 MW · Nograd
- Bukkabrany · Solar · 20 MW · Borsod-Abauj-Zemplen
- Miskolc Hold power station · Gas · 64 MW · Borsod-Abaúj-Zemplén
Location
Coordinates 47.802, 20.059 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Visonta?
Visonta is a 14.4 MW solar power plant in Heves, Hungary, commissioned in 2017.