- Yondr Group launches the second facility at its 100 megawatt Slough data centre campus.
- The expansion highlights growing demand for hyper scale infrastructure in Greater London.
What happened: Yondr activates first phase of second London data centre with focus on sustainability
Yondr Group achieves a significant milestone at its 100MW Slough data centre campus, bringing the first 10MW of capacity online at its second facility. Announced on 10 April 2025, this phase marks the latest in a series of rapid developments by the hyperscale data centre operator following the activation of its first building in the summer of 2024. A third 40MW facility is also under construction on the same site.
Located in Slough—one of the UK’s most mature data centre ecosystems—the new building is designed for high efficiency and sustainability. It achieves a BREEAM ‘Very Good’ rating and delivers an annualised power usage effectiveness (PUE) of 1.21. Rooftop solar panels, a green façade with a dedicated horticultural plan, and electric vehicle parking spaces all support Yondr’s goal to reach net zero for scope 1 and 2 emissions by 2030.
Also read: Yondr breaks ground on 40MW data center in London expansion
Also read: Yondr Group advances its 40MW data centre project in Frankfurt
Why it is important
Yondr’s expansion at its London campus represents more than just added capacity; it signals a strategic push towards greener, high-performance digital infrastructure in the UK. Transforming a contaminated former industrial site into an advanced data centre exemplifies how hyper-scale projects can integrate sustainability, community benefits, and economic regeneration. The company has partnered with Slough Borough Council and the Canal & River Trust to improve local infrastructure, including cycleways and biodiversity measures such as bat and bird boxes.
This approach sets Yondr apart in a market where hyperscale providers are under increasing pressure to reduce environmental impact. The facility’s low PUE score positions it above industry norms, addressing rising concerns over the energy demands of data centres amid soaring AI and cloud workloads.
Peter Hill, VP of Design & Construction EMEA at Yondr, says the campus reflects the company’s commitment to “reliability, resilience and sustainability” and underscores Slough’s role as a “key global hub for data centre capacity.”
Yondr is also fostering local talent through its apprenticeship programme. Four apprentices will be on-site by the end of 2025, supporting skills development in the digital infrastructure sector.
