Verbano 1 — Switzerland

Verbano 1 is a 119 MW hydro power station in Ticino, Switzerland. It is operated by Energie Wasser Bern (EWB) [5%]; Canton of Ticino [20%]; Industrielle Werke Basel. Based on its capacity (estimated), it can supply roughly 119k homes (estimated). It ranks #26 of 174 Switzerland power plants by installed capacity. Commissioned in 1953, it is around 73 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 52.3% of Switzerland's electricity; the national grid averages 39 gCO₂/kWh (97.7% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1004612.

Data provenance

Source of the capacity and fuel values:

capacity: GEM · 2026 · L100000603526; fuel: WRI GPPD

In context: how this plant compares

At 119 MW, Verbano 1 is well above the median hydro plant in Switzerland (18.2 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 Switzerland hydro capacity

1.2% of 9,694 MW across 162 plants in this dataset

Age among peers

72 of 149 dated hydro plants in Switzerland 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 Switzerland

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Energie Wasser Bern (EWB) [5%]; Canton of Ticino [20%]; Industrielle Werke Basel.

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a subarctic (boreal) climate (Köppen Dfc) — Northern Hemisphere, latitude 46.1°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 14% 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: 57/100 — 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 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 #19 largest hydro power plant of 162 in Switzerland by capacity.

Switzerland has 162 hydro power plants in this dataset, together about 9,694 MW of capacity.

Nearby power plants

• Ponte Brolla · Hydro · 3.1 MW · Ticino
• RONCOVALGRANDE · Hydro · 1,000 MW · Lombardy
• Tenero-Centrale di dotazione · Hydro · 4.2 MW · Ticino
• Gordola · Hydro · 132.5 MW · Ticino
• Giumaglio · Hydro · 8.9 MW · Ticino
• Stampa · Hydro · 5 MW · Ticino

Location

Coordinates 46.1318, 8.7168 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions