Private company

Renewable Energy Systems

Global renewable energy company

The RES Group (Renewable Energy Systems) is the world's largest independent renewable energy company, having been in the sector for more than 40 years. As of 2023, the company had established more than 23 gigawatts of renewable energy projects worldwide and supported more than 12 gigawatts operations.2 It is headquartered in Kings Langley.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1982Founded1
  • HeadquartersKings Langley1
  • Websitewww.res-group.com
  • Legal formPrivate Limited Company3
  • LEI213800SJORDG28LULW603
  • StatusActive3
  • LEI statusIssued and current3
  • Registered addressBeaufort Court, WD4 8LR Kings Langley, United Kingdom3
  • Registered withCompanies House, 015899613
RES at Old Ovaltine Egg Farm Kings Langley - geograph.org.uk - 27962
Photo: Jack Hill, CC BY-SA 2.0, via Wikimedia Commons4

The RES Group (Renewable Energy Systems) is the world's largest independent renewable energy company, having been in the sector for more than 40 years. As of 2023, the company had established more than 23 gigawatts of renewable energy projects worldwide and supported more than 12 gigawatts operations.2

Corporate structure

Renewable Energy Systems sits at the top of its group. 7 entities, 4 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Renewable Energy Systems Kings Langley, United Kingdom
    • C.E.P.E.DU PAYS DE ST SEINE Subsidiary · Avignon, France
    • CENTRALE EOLIENNE DE PRODUCTION D'ENERGIE DE GRANDBOIS Subsidiary · Avignon, France
    • CEPE DE LA SALESSE Subsidiary · Avignon, France
    • NORTHERN ILLINOIS BATTERY STORAGE HOLDING LLC Subsidiary · Broomfield, Colorado, United States
    • RENEWABLE ENERGY SYSTEMS CANADA INC. Subsidiary · Montréal, Quebec, Canada
      • EIGG MOUNTAIN WIND INC. Subsidiary · Montreal, Quebec, Canada

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0). Each entity in the chart links to its source.

Timeline

  1. 1982Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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