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Switzerland — Energy Infrastructure

OverWatts maps 94 energy assets in Switzerland across 8 layers — the 63rd-largest mapped base of 157 countries. They include 55 power plants, 17 grid storages and 8 interconnectors. Operating generation capacity is 14.3 GW, led by hydro at 78%.

The companies named on the most assets are Axpo Power AG (30), BKW Energie AG (27) and Industrielle Werke Basel (IWB) (27), counting both ownership and operatorship. Half of Switzerland's mapped assets in service predate 1964 (median commissioning year of the 71 with a known date), 7 came online in the past decade and the oldest still listed is Mittelbünden hydroelectric plant, dating from 1910. 10 projects are under construction or proposed, led by Switzerland – Germany interconnection (planned) (1.9 GW).

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94
Total assets
#63
of 157 countries
14.3 GW
operating · 55 power plants
10
In construction / proposed

Operating generation capacity by fuel

Utility-scale sites of 100 MW and above. Distributed generation — rooftop solar especially — is outside the tracker, so this runs below national installed capacity.

Electricity generated by fuel · 2025

What the fleet actually produced — distinct from the installed capacity above.

Total 65.0 TWhDemand 65.1 TWhClean 98%Intensity 39 gCO₂/kWh

Ember · source · CC-BY-4.0

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Browse by asset class

Power grid 3,595 kmPower Plants 55Grid Storage 17Interconnectors 8Cement Plants 6Pipelines 4Iron & Steel Plants 2Data Centres 1Chemical Plants 1

Under construction & proposed

Largest assets

Biggest owners & operators

Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.

Frequently asked

How many energy assets does Switzerland have?
OverWatts maps 94 in Switzerland across 8 asset classes — the 63rd-largest mapped base of the 157 countries covered.
How much electricity generation capacity does Switzerland have?
About 14.3 GW operating across 49 plants, mostly hydro 78% and nuclear 22%.
Who owns Switzerland's energy infrastructure?
Axpo Power AG is named as owner or operator on the most mapped assets (30), followed by BKW Energie AG (27), Industrielle Werke Basel (IWB) (27) and Elektrizitätswerk Der Stadt Zürich (EWZ) (22).
What energy projects are under construction in Switzerland?
The largest under way or proposed are Switzerland – Germany interconnection (planned) (1.9 GW), Switzerland – Italy interconnection (planned) (1.0 GW) and Lago Bianco hydroelectric plant (1.0 GW).