Digital Realty CPH1 Copenhagen Data Center: Ballerup Interconnection Hub
Status: Operational | Location: Industriparken 20A–20C, DK-2750 Ballerup, Copenhagen, Denmark
Project Overview
Digital Realty CPH1 (formerly Interxion CPH1) is a leading carrier-neutral interconnection data center located in Ballerup, West Copenhagen, Denmark, serving as a key digital gateway for enterprises, cloud providers, network operators, and financial institutions. As the anchor facility of Digital Realty’s three-building Copenhagen Campus (CPH1–CPH3), the site provides a highly connected ecosystem designed to support modern digital workloads, cloud adoption, and enterprise connectivity requirements. Spanning approximately 8,000 m² of gross building area with around 3,700 m² of dedicated technical whitespace, CPH1 offers scalable colocation infrastructure with reliable power, advanced cooling systems, and secure operational environments. The facility enables direct low-latency connectivity to major European digital hubs while providing access to regional and international network ecosystems through internet exchanges such as DIX and Netnod. Through Digital Realty’s ServiceFabric® platform, customers can establish direct cloud connections and efficiently integrate with leading cloud service providers, supporting hybrid cloud, edge computing, and digital transformation strategies. Operating on 100% renewable energy, CPH1 aligns with sustainability-focused infrastructure goals while maintaining high performance and operational efficiency. With its strategic location, carrier-neutral model, extensive connectivity options, and integration into Digital Realty’s global data center platform, CPH1 continues to play an important role in strengthening Denmark’s position as a connected digital hub in Northern Europe.
Quick Facts
| Field | Value |
|---|
| Project Name | Digital Realty CPH1 Copenhagen Data Center: Ballerup Interconnection Hub |
| Location | Industriparken 20A–20C, DK-2750 Ballerup, Copenhagen, Denmark |
| Status | Operational |
| Commissioning | Operational / Integrated into Digital Realty PlatformDIGITAL® |
| Total IT Load | ~3.7 MW – 4.2 MW Critical IT Power |
| Total Capacity | 4.2 MW Total Power Allocation across 8,000 m² gross building area (3,700 m² whitespace) |
| Tier Level | Tier III Equivalent Architecture / ISO 27001, ISO 14001, SOC 2 Type II, PCI-DSS Certified |
| Project Type | Purpose-Built Colocation, Network Dense Digital Hub & Cloud Gateway |
City Profile
| Header | Details |
|---|
| City Name | Ballerup |
| Population | ~50,000 (municipality population) |
| Urban Agglomeration | ~2.1 million (Greater Copenhagen Metropolitan Area) |
| City GDP | Part of the Greater Copenhagen economy (approx. USD 150+ billion) |
| Per Capita Income | ~USD 70,000 |
| City Tier | Tier 2 – Technology, Research & Business Hub |
| Key Strengths | Major technology and business district near Copenhagen; strong ICT and life sciences ecosystem; home to global companies; advanced telecommunications infrastructure; proximity to Copenhagen Airport; highly skilled workforce; strong research and innovation environment; excellent transport connectivity; growing digital infrastructure and data center potential. |
Companies Involved
| Header | Details |
|---|
| Developer / Operator | Digital Realty |
| Strategic Infrastructure Partner | Radius Elnet (Distribution Utility) & Danish National Grid (Energinet) |
| Construction Contractor | Specialized European Mission-Critical Engineering & EPC Contractors |
| MEP Engineering | Digital Realty In-House Technical Infrastructure & Design Engineering Teams |
| Network Connectivity | Carrier-neutral platform with 95+ network providers; dual diverse underground fiber entrance vaults; direct access to Danish Internet Exchange (DIX) and Netnod; direct interconnection to CPH2 and CPH3. |
| Power Infrastructure | Redundant dual grid connections, static 2N / N+1 uninterruptible power supply (UPS) systems, automated switchgear, and N+1 backup diesel generators supporting 36 hours at full load. |
Technical Specifications
| Header | Details |
|---|
| Power Capacity | ~4.2 MW Total Utility Supply Allocation |
| UPS Redundancy | 2N / N+1 Static Uninterruptible Power Supply (UPS) Configuration |
| Cooling System | Cold aisle containment, indirect free-cooling, ground water cooling integration, and N+1 CRAC/CRAH distribution units supporting standard to high-density server configurations. |
| Connectivity | Carrier-neutral access with direct express connections to AWS Direct Connect, Microsoft ExpressRoute, and ServiceFabric® interconnection platform. |
| PUE Target | < 1.25 Annualized Operational Design PUE |
| Energy Mix | 100% Green Renewable Energy supply matching. |
Milestones
| Header | Details |
|---|
| Announcement | M&A Acquisition / Campus Integration |
| Construction Start | Completed / Modernized |
| Phase 1 Go-Live | Operational |
| Full Buildout | Operational Active Campus |
Investment Details
| Header | Details |
|---|
| Total Investment | Estimated €35,000,000 EUR to €60,000,000 EUR |
| Funding | Corporate Capital Expenditure by Digital Realty |