Grid Storage

Vianden hydroelectric plant

Luxembourg

215th-largest grid storage worldwide · top 23% worldwide (#215 of 965)

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Operator: Société Électrique de l'Our (SEO)
Owner: Grand Duchy of Luxembourg, unknown, Luxempart, RWE AG, Electrabel Invest Luxmbourg, Enovos Luxembourg SA
Status: operating
Capacity: 1,294 MW
Technology: pumped storage
Commissioned: 1964
Also listed as: A power plant — this site generates as well as stores

Comparable grid storages · worldwide · 965 ranked

#1Yebatan Pumped Storage hydroelectric plant4.5 GW
#213Lushan hydroelectric plant1.3 GW
#214Eagle Mountain Pumped hydroelectric plant1.3 GW
#215Vianden hydroelectric plant1.3 GW
#216Qingyuan hydroelectric plant1.3 GW
#217Tongcheng hydroelectric plant1.3 GW

Grid connection · within 50 km

Nearest substation: Station Niederstedem
Its voltage: 380 kV
Distance: 21 km
Strongest line nearby: 380 kV
Substations in range: 3

Mapped grid infrastructure from OpenStreetMap, whose coverage is excellent in some regions and sparse in others. Nothing shown here means nothing is mappednearby — not that the site is unconnected. Lines are matched on a segment’s midpoint, so a corridor passing directly overhead can be missed; this under-reports rather than invents.

Co-located infrastructure · within 25 km

Vianden hydroelectric plant0 m · Power Plant · 1.3 GW · hydro
Winseler-Luedelange Gas Pipeline20 km · Pipeline
380 kV line21 km · Transmission Line
Station Niederstedem21 km · Substation / Converter
380 kV21 km · Transmission Line
380 kV Gilzem Ost;380kV Uchtelfangen West21 km · Transmission Line

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Portfolio

All assets by Société Électrique de l'Our (SEO) →All assets by Grand Duchy of Luxembourg →All assets by Luxempart →All assets by RWE AG →All assets by Electrabel Invest Luxmbourg →All assets by Enovos Luxembourg SA →

SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)