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Colt Data Centre Services has started construction on Berlin 1, the first of two hyperscale data centers it plans east of Berlin. H&MV Engineering, the project's electrical contractor, announced the groundbreaking in a company post and is delivering a 110 kV G.I.S substation for the site. Berlin 1 is due online by the end of 2028, and the two buildings are designed for a combined 54MW of IT capacity.
Featured: Wide aerial drone photograph highlighting the scale of a Colt DCS hyperscale data center campus.
Colt announced Berlin 1 and 2 in April 2025 as part of a €2 billion German expansion that also includes Frankfurt 4 and 5 in Wiesbaden. The four sites will add 117MW to Colt's capacity in Germany. The Berlin buildings occupy a 9.5-acre site about 10 kilometers east of the capital, close to major telecom providers and transport links. Colt has secured an 80MVA power contract for the site and is targeting first-phase ready-for-service at Berlin 1 by the end of 2028.
The facilities will follow Colt's Global Reference Design and meet the operator's tier 3 specification. They are designed to support racks up to 130kW using a mix of air and direct liquid-to-chip cooling, with waste heat planned for reuse in district heating.
"We're proud to celebrate the groundbreaking of Colt Data Centre Services' new development in Berlin, marking an exciting milestone in the delivery of critical infrastructure," H&MV Engineering said in the post.
Colt DCS was founded in 1992 as City of London Telecom and was acquired by Fidelity Investments in August 2015. [Its portfolio](https://www.datacenterdynamics.com/en/news/colt-breaks-ground-on-data-center-in-berlin-germany) includes 15 operational data centers, with about a dozen sites under development across the UK, Europe, and APAC, and nearly 800MW of capacity under development. The company previously ran legacy data centers in Berlin and Hamburg, which it sold to [AtlasEdge](https://baxtel.com/data-centers/atlasedge) in 2021 as part of a wider European portfolio sale.
Baxtel tracks 53 data center facilities in Berlin, the second-largest market in Germany, with ten currently under construction. The largest is NTT Berlin 1 at 18MW.
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