Company profile

Renewable Energy Systems (RES)

Project developer · Independent power producer · O&M provider

Renewable Energy Systems (RES) is a project developer, an independent power producer, and an O&M provider. It was founded in 1982. Tera links it to 230 projects (Australia, Bulgaria, Canada, Germany, France, United Kingdom, Ireland, Sweden, Türkiye, and United States), 88 of them in operation with 5,392 MW. Its most recently commissioned project is Saint-Brieuc wind farm (2024).

See all projects, owners and decision-maker contacts
Founded
1982
Website
res-group.com
Active in
Australia, Bulgaria, Canada, Germany, France, United Kingdom, Ireland, Sweden, Türkiye, and United States
Technologies
Battery storageSolarWind
Employees
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Revenue
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Company overview
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Legal entity
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Projects
230
MW in operation
5,392
Countries
10
Latest commissioning
2024

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Projects

Projects by status

  • Planned78
  • Under construction4
  • Operating88
  • Mothballed2
  • Cancelled56

Operating capacity

  • Battery storage assets totalling 20 MW
  • Solar assets totalling 593 MW
  • Wind assets totalling 4,779 MW

  • 496 MWWind

    Operating

    Saint-Brieuc wind farm

    France

    Role
    O&M provider
    Commissioned
    2024

    In the full record

    • Owners and stakes
    • O&M provider
    • Location

    35 data pointsUnlock

  • 492 MWWind

    Operating

    Maverick Creek Wind

    Texas, United States

    Role
    Owner
    Commissioned
    2022

    In the full record

    • Owners and stakes
    • Operator
    • O&M provider
    • Location

    64 data pointsUnlock

  • 234 MWWind

    Operating

    Marengo Wind Plant

    Washington, United States

    Role
    O&M provider
    Commissioned
    2007

    In the full record

    • Owners and stakes
    • O&M provider
    • Location

    62 data pointsUnlock

  • 226 MWWind

    Operating

    Murra Warra wind farm

    Victoria, Australia

    Role
    Owner
    Commissioned
    2020

    In the full record

    • Owners and stakes
    • Operator
    • Location

    69 data pointsUnlock

226 more projects

The full list, with locations, capacities, owners and the other companies involved, is available with a licence.

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Ownership and project relationships

On its projects

Co-owners
Allianz SEPattern Energy20+ more
Developers
Peel Energy LtdScottish & Southern Energy10-19 more
Operators
Onward EnergyPattern Operators LP10-19 more
O&M
Aviva InvestorsNovera Energy10-19 more
EPC
PrimorisSwinerton2-4 more
Offtakers
Xcel Energy IncBHP Group Ltd2-4 more
Consultants
Kirby Group EngineeringSmec2-4 more

People

5-9 executives and decision makers

Get straight to the decision makers: names, roles and contact details, where available.

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Is this your company? Claim this profile to update itUpdated October 11, 2026

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