Power Purchase Agreement (PPA)

Some of Our Success Stories in the UK

• Thames Water

  Partnering with RWE to supply clean power for the UK’s largest water provider.

  132 GWh	5 years	Camster onshore wind farm
  Supply per year	Duration	Supply from

  In December 2025, RWE signed a five-year Power Purchase Agreement with Thames Water, the UK’s largest water company serving 16 million customers. Under this deal, RWE will supply 132 GWh of clean electricity annually from its Camster onshore wind farm in Caithness, Scotland. This renewable energy will cover up to 15% of Thames Water’s essential services, helping the utility reduce emissions and manage energy costs in a volatile market.

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  Camster onshore wind farm

  

  “Our purpose is to deliver life's essential service, so our customers, communities and the environment can thrive. We´re committed to reducing our greenhouse gas emissions and transforming the way we generate, purchase and use energy. It takes a significant amount of energy to keep taps flowing and toilets flushing, and energy is one of our greatest costs. Power Purchase Agreements are a mechanism which allow us to buy renewable energy at a fixed cost for a sustained period of time. This agreement will help us manage future planning for energy costs.”

  Xiang Cheng, Head of Energy and Carbon at Thames Water

• Co-op Group

  Multiple PPAs with UK co-operatives, bringing renewable energy into everyday life.

  
  

  53 GWh	10 years	London Array offshore wind farm
  Supply per year	Duration	Supply from

  Five UK Co-operatives – A Landmark 10-Year Agreement

  In April 2025, RWE partnered with five independent retail co-operatives—Central Co-op, Lincolnshire Co-op, Scotmid Co-op, East of England Co-op, and Southern Co-op—to sign a 10-year Corporate PPA.

  This agreement will deliver 53 GWh of green electricity annually to over 400 locations, including food stores, funeral homes, and travel agencies. The power comes from the London Array offshore wind farm, one of the world’s largest, with 175 turbines and 630 MW capacity.

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  London Array offshore wind farm

  

  “At Co-op, we’re delighted to announce this further Power Purchase Agreement signing, as we continue to strengthen our energy purchasing strategy by making impactful changes across our business. For the sake of people and planet, it’s vital that collectively we tackle the climate crisis. The energy transition is central to energy security and therefore national security too. That’s why we believe that every business should be playing its part to help green the grid, be that by reducing their energy demand or indeed by ensuring that renewable electricity generation forms an integral part of their energy procurement decisions.”

  Heather Thomas, Group Property & Sustainability Director at Co-op:

• Global Switch

  RWE powers Global Switch’s London data centre.

  
  

  70 GWh	8 years	Brechfa Forest West onshore wind farm
  Supply per year	Duration	Supply from

  RWE has signed an 8 year PPA with Global Switch, a pioneering owner, operator and developer of data centres in Europe and Asia-Pacific. From January 2026 until 2033, RWE will supply a total of 70 gigawatt hours of clean electricity per year, produced from RWE’s Brechfa Forest West onshore wind farm to power Global Switch’s data centre in the heart of London’s Docklands.

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  Brechfa Forest West onshore wind farm

  

  “Our agreement with RWE is a critical next step on our journey to purchasing 100% renewable energy by 2030, and to the setting of new standards for what a sustainable, environmentally-conscious data centre can look like. It’s an agreement that brings together the forests of Wales and the most powerful, most advanced AI and high performance compute deployments in the world.”

  Peter Domeney, COO at Global Switch

• Lidl GB

  Green electricity from RWE for British Lidl supermarkets

  
  

  100 GWh	5 years	Gwynt y Môr offshore wind farm
  Supply per year	Duration	Supply from

  RWE has signed a Power Purchase Agreement (PPA) with the discount supermarket Lidl GB. The five-year agreement, which has already begun, covers an annual electricity supply of 100 gigawatt hours (GWh). This accounts for just over 15% of Lidl GB’s national electricity requirements. The electricity will be generated by RWE’s Gwynt y Môr offshore wind farm, which is located in the Irish Sea.

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  Gwynt y Môr offshore wind farm