Digital Realty PAR9 Data Center (Paris Digital Park / Interxion PAR9)
Status: Operational / Active Capacity Phasing | Location: 3 Avenue Marcel Cachin, 93120 La Courneuve, France (Paris Digital Park Campus)
Project Overview
Digital Realty’s PAR9 is a premier four-story carrier-neutral data center strategically located within the Paris Digital Park campus in La Courneuve, one of France’s leading digital infrastructure hubs. Spanning approximately 104,090 square feet (9,670 m²), the facility delivers up to 19 MW of critical IT capacity and is purpose-built to support enterprise IT, hyperscale cloud deployments, artificial intelligence (AI), and high-performance computing (HPC) workloads. PAR9 forms part of Digital Realty’s highly interconnected Paris metro platform, which consists of 13 strategically located data centers linked through a resilient, sub-millisecond dark fiber ring, enabling seamless workload distribution and ultra-low-latency connectivity across the region. The facility offers carrier-neutral access to more than 90 telecommunications carriers, internet service providers (ISPs), and network operators, creating a rich interconnection ecosystem for enterprises, cloud providers, financial institutions, and content delivery networks. Customers also benefit from direct connectivity to France-IX, one of Europe’s leading internet exchange points, providing high-performance, low-latency access to domestic and international networks. Designed for next-generation digital infrastructure, PAR9 incorporates high-efficiency closed-loop liquid-to-chip cooling technology, enabling support for high-density GPU clusters, AI training, machine learning, and other compute-intensive applications while improving energy efficiency and sustainability. Backed by resilient power infrastructure, advanced physical security, and scalable colocation capabilities, Digital Realty PAR9 serves as a critical digital gateway for organisations seeking reliable, future-ready infrastructure in one of Europe’s largest digital markets. Its strategic location, extensive connectivity ecosystem, AI-ready cooling architecture, and resilient design make PAR9 a key component of Digital Realty’s Paris campus and an important hub for digital transformation across France and Europe.
Quick Facts
| Field | Value |
|---|
| Project Name | Digital Realty PAR9 Data Center (Paris Digital Park / Interxion PAR9) |
| Location | 3 Avenue Marcel Cachin, 93120 La Courneuve, France (Paris Digital Park Campus) |
| Status | Operational / Active Capacity Phasing |
| Commissioning | Phase 1 Go-Live: 2021 / Operational Scale & Density Upgrades: 2024–2026 |
| Total IT Load | 19 MW Total Critical IT Load |
| Total Capacity | ~24+ MW Total Utility Substation Capacity across 104,090 sq ft (9,670 m²) total area |
| Tier Level | Tier III Equivalent / Concurrent Maintainability (ISO 14001, ISO 22301, ISO 27001, ISO 45001, ISO 50001, HDS Certified) |
| Project Type | Purpose-Built Greenfield Hyperscale, Cloud & Enterprise Interconnection Hub |
City Profile
| Header | Details |
|---|
| City Name | Paris |
| Population | Approx. 2.1 Million |
| Urban Agglomeration | Approx. 11 Million |
| City GDP | Approx. USD 1 Trillion |
| Per Capita Income | Approx. USD 65,000 |
| City Tier | Alpha++ Global City |
| Key Strengths | Tourism, luxury fashion, finance, technology, culture, education, transportation |
Companies Involved
| Header | Details |
|---|
| Developer / Operator | Digital Realty |
| Strategic Infrastructure Partner | Enedis / RTE (Electrical Utilities), France-IX (Internet Exchange Operator) |
| Construction Contractor | Specialized European Data Center EPC & Mission-Critical Contractors |
| MEP Engineering | Digital Realty Global Design & High-Density Thermal Engineering Teams |
| Network Connectivity | Sub-millisecond metro dark-fiber ring connecting all Paris Digital Realty sites (PAR1–PAR13); carrier-neutral access to 90+ carriers, France-IX, and major European fiber networks. |
| Power Infrastructure | Dual 20kV high-voltage utility feeds supplied by Enedis, static N+1 uninterruptible power supply (UPS) systems, and N+1 emergency standby diesel generator backup. |
Technical Specifications
| Header | Details |
|---|
| Power Capacity | 19 MW Critical IT Power Capacity |
| UPS Redundancy | N+1 Static UPS Topology |
| Cooling System | Closed-loop chilled water system with N+1 cooling plant redundancy, air-side economization, hot/cold aisle containment, and liquid-to-chip cooling readiness for high-density AI clusters. |
| Connectivity | Carrier-neutral platform with multi-path fiber entry vaults, dual Meet-Me-Rooms (MMRs), and global cloud cross-connects via ServiceFabric™. |
| PUE Target | < 1.25 Annualized Operational Design PUE |
| Energy Mix | 100% matched clean renewable energy procurement backed by European Guarantees of Origin (GoO). |
Milestones
| Header | Details |
|---|
| Announcement | 2019 |
| Construction Start | 2019–2020 |
| Phase 1 Go-Live | 2021 |
| Full Buildout | Operational / Continuous Phased Expansion |
Investment Details
| Header | Details |
|---|
| Total Investment | Estimated €150,000,000 EUR to €200,000,000 EUR |
| Funding | Digital Realty corporate capital expenditure (CapEx) allocation |