Colt Data Centre Services
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Colt Data Centre Services (Colt DCS) designs, builds and operates hyperscale colocation data centres for global hyperscale cloud providers and large enterprises, with a current portfolio centered on the UK, France, Germany, the Netherlands, India and Japan. As of 2025-2026, the company describes its global portfolio as roughly 13-15 operational data centres with a further 12-18 in development across roughly 9-11 cities, having pivoted decisively toward large hyperscale-only campuses after selling 12 smaller, non-hyperscale colocation sites across Europe to AltasEdge Data Centres in November 2021. Its flagship site is a 134MW campus in Navi Mumbai, India, opened in phases starting September 2023, and it operates multiple hyperscale buildings across Frankfurt, Paris/Les Ulis/Villebon-sur-Yvette, London (Hayes), Rotterdam, and a growing Japanese footprint spanning Tokyo (Inzai, Shiohama, Otemachi) and Osaka (Keihanna and Minoh), the latter developed via a joint venture with ESR, Mitsui and Fidelity. Colt DCS is majority owned by Fidelity Investments and has increasingly marketed itself as an AI-ready hyperscale operator, building new-generation facilities in Paris, Frankfurt, London, Mumbai and Tokyo with hybrid air/liquid cooling designed for high-density GPU racks.
Colt Data Centre Services has a confirmed data center presence at the following locations:
FACILITY OPERATOR
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Colt Data Centre Services Data Center Locations
- Paris, France Colt Paris North Data Centre CARRIER-NEUTRAL PENDING REVIEW
- Villebon-sur-Yvette, France Colt Paris 2 PENDING REVIEW
This is the first of three planned buildings on a new 12.5-acre Villebon campus and, per industry reporting, is understood to be anchored by Microsoft as a hyperscale tenant. - Les Ulis, France Colt Paris South West Data Centre TIER III CARRIER-NEUTRAL PENDING REVIEW
This Tier III facility offers over 3,700 square metres of data centre space and 15 MVA of power, located roughly 12km southwest of central Paris. - Frankfurt, Hesse, Germany Colt Frankfurt City Data Centre TIER 3 CARRIER-NEUTRAL PENDING REVIEW
This facility is the first of Colt's three Frankfurt data centres, offering 1.2MW of IT power in a 2,620 square metre site aimed at large enterprises rather than hyperscale tenants. - Frankfurt, Hesse, Germany Colt Frankfurt West Data Centre CARRIER-NEUTRAL PENDING REVIEW
This facility was fully pre-let by unnamed hyperscale customers as early as September 2020, well before its fit-out completed in August 2023, and offers 25MW of capacity across 14 data halls. - Frankfurt, Hesse, Germany Colt Frankfurt Three Data Centre TIER 3 CARRIER-NEUTRAL PENDING REVIEW
This three-story, Tier 3 facility in Sossenheim broke ground in late 2023/2024 and is explicitly marketed toward cloud and AI service providers needing high-performance computing capacity. - Navi Mumbai, Maharashtra, India Colt Mumbai Data Centre CARRIER-NEUTRAL PENDING REVIEW
This campus, Colt DCS's first Indian facility and the largest in its global portfolio, was awarded a Platinum rating by the India Green Building Council for its green data centre design. - Inzai, Japan Tokyo Inzai 1 Data Centre TIER 3 CARRIER-NEUTRAL PENDING REVIEW
Colt launched its first Inzai data centre in 2011, and this facility remains a base-isolated building designed to withstand seismic activity, delivering 8MW of IT power over 4,000 square metres. - Inzai, Japan Tokyo Inzai Two Data Centre CARRIER-NEUTRAL PENDING REVIEW
- Inzai, Japan Tokyo Inzai 4 Data Centre CARRIER-NEUTRAL PENDING REVIEW
This building, launched in 2026, was already 100 percent pre-let at delivery and is the second site developed under Colt's joint venture with Fidelity Investments and Mitsui & Co. - Minoh, Japan Osaka Minoh Data Centre PENDING REVIEW
This site is being developed through a dedicated joint venture between ESR Group and Colt DCS, marking a second major hyperscale development model in Osaka beyond the Fidelity/Mitsui/CPPIB JV used at Keihanna. - Osaka, Japan Osaka Keihanna Data Centre CARRIER-NEUTRAL PENDING REVIEW
This 45MW carrier-neutral facility in Keihanna Science City opened in March 2023 as the first development under Colt's joint venture with Fidelity Investments, Mitsui and the Canada Pension Plan Investment Board, offering about 42,000 square metres of floor space. - Tokyo, Japan Tokyo Shiohama Data Centre CARRIER-NEUTRAL PENDING REVIEW
- Tokyo, Japan Tokyo Otemachi Data Centre CARRIER-NEUTRAL PENDING REVIEW
This facility is located in Otemachi, one of Tokyo's premier financial and business districts, giving it an unusually central-city position compared to Colt's other, suburban Japanese sites. - Rotterdam, Netherlands Colt Rotterdam Data Centre TIER 3 CARRIER-NEUTRAL PENDING REVIEW
This Tier 3-designed facility offers a spacious 11,400 square metre data hall area, among the largest in Colt's European portfolio. - Hayes, UK Colt London Hayes Data Centre CARRIER-NEUTRAL PENDING REVIEW
This facility sits within the wider Hayes Digital Park campus in West London, which Colt has expanded to plan up to 160MW of total capacity across multiple buildings. - Welwyn Garden City, UK London North Data Centre CARRIER-NEUTRAL PENDING REVIEW
By Continent
Common Questions
Does Colt DCS offer AI/GPU-optimized data centre infrastructure?
Colt DCS states that its newer hyperscale developments in London, Paris, Frankfurt, Mumbai and Tokyo are being built with hybrid air-and-liquid cooling specifically to support GPU-dense racks; its own site notes AI workloads can require as much as 130kW per rack, requiring this shift away from pure air cooling. The clearest single-building example is Colt Paris 2 in Villebon-sur-Yvette, which broke ground in May 2025 and was redesigned to offer liquid cooling and densities over 100kW per cabinet reportedly for a hyperscale AI customer.
Did Colt DCS sell off its European colocation business?
Yes. In November 2021, Colt DCS divested a portfolio of 12 smaller, non-hyperscale colocation facilities across cities including Amsterdam, Barcelona, Berlin, Brussels, Copenhagen, Hamburg, London, Madrid, Milan, Paris and Zürich to AltasEdge Data Centres, after which Colt DCS refocused entirely on large hyperscale and enterprise campuses.
What is Colt DCS's largest facility?
Its largest facility is the Navi Mumbai campus in India, which the company describes as providing up to 134MW of IT power across roughly 62,000-62,490 square metres, making it the biggest site in Colt DCS's global portfolio as of 2024-2025.
Who owns Colt Data Centre Services?
Colt DCS is backed by Fidelity Investments and operates as a separate business line from its former sibling, Colt Technology Services (network/voice services), having been spun off as a distinct entity in 2015.
Does Colt Data Centre Services offer cloud services?
We haven't confirmed cloud services for Colt Data Centre Services yet — this isn't a definitive no, since our research can miss things. Please contact Colt Data Centre Services directly to confirm cloud availability.
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