SE

SEO

Société Electrique de l'Our S.A.

Luxembourg, Luxembourg

HydroWindEnergy StorageLimited company
Profile last updated: October 6, 2026

About

SEO is a limited company headquartered in Luxembourg, Luxembourg specializing in Hydro, Wind, Energy Storage.

SEO (Société Electrique de l'Our) is a Luxembourg energy company that generates electricity from hydropower and wind. It operates the Vianden pumped-storage power plant, a network of run-of-river hydropower plants in Luxembourg, Germany and France, and wind farms in Luxembourg through its subsidiary Soler. The company supports grid stability and cross-border electricity supply.

Headquarters

Luxembourg, Luxembourg

Company type

Limited company

Focus areas

hydropowerpumped-storagerun-of-riverwind powergrid stabilitycross-border electricityrenewable energy

Products & services

Business models

IPP

Value chain

O&M

Service areas (1)

  • Electricity generation

    Generation of hydropower and wind power, and grid-stabilising pumped-storage electricity.

Locations

Headquarters

rue Pierre d'Aspelt 2, L-1142, Luxembourg, Luxembourg

Operating locations (1)

  • rue de l'Energie 3, Stolzembourg, Luxembourg

Service regions

LuxembourgGermanyFrance

Projects

3

Vianden Pumped-Storage Power Plant

OperationalPumped-storage hydropower

One of Europe's most powerful pumped-storage power plants, operated in Vianden. It helps stabilise the high-voltage grid and supports cross-border electricity supply.

1.3 GW capacityVianden, Luxembourg

Run-of-river power plants

OperationalRun-of-river hydropower

Run-of-river hydropower plants operated in Luxembourg, Germany and France.

47.4 MW capacityLuxembourg

Wind farms

OperationalWind farm

Wind farms in Luxembourg developed and held through Soler and its shareholdings.

168.5 MW capacityLuxembourg

Credentials & affiliations

Partnerships

CEDECEL France, Cefralux

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