Elisa: Tapiola Data Center

The Tapiola Data Center (Tapiola Center), operated by Elisa Oyj, is located in Espoo, Finland (Ahertajantie 2). This underground, stone-constructed facility lies within the Helsinki metropolitan area’s western corridor and benefits from Finland’s clean energy, low electricity costs, and strong network connectivity to Nordic, Baltic, and European routes. 

Tapiola’s position in Espoo allows for low-latency access to Helsinki and surrounding business districts, as well as integration into submarine and national fiber systems. Its design emphasizes energy efficiency (e.g. waste-heat recovery) and high availability, making it suitable for enterprises and service providers seeking secure, sustainable colocation in the Nordic region. 

⚙️ Facility Highlights

• Total capacity: up to 10 MW of load capacity 
• Usable equipment/white space: 2,000 m² of data hall space 
• Construction: underground stone-built design, EMP-protected
• System availability: 99.99 % per year 
• Cooling / environment:
• Overpressurized environment (10–20 % above ambient) 
• Target temperature 23 ± 2 °C (alarm limits 18–27 °C)
• N+1 redundancy in cooling units, closed cooling plus fresh-air cooling in winter
• Waste heat recovery: the facility recaptures heat and channels it to district heating or neighborhood use 
• Structural / safety features:
• Tunnel / corridor heights between 5–10 m (with min. 2.30 m clear) 
• Overhead cabling racks and leak-protected ceiling structures 
• Fire-resistant surface materials 

🔐 Security & Compliance

• 24/7 security presence and video surveillance 
• Electronic access control, with restricted entry for authorized personnel only 
• Centralized alarm / monitoring system 
• Fire protection: fully automated and monitored fire suppression, sprinklers, and smoke venting systems
• Protected underground parking and loading areas with access control 

🌐 Connectivity & Carrier Access

• Connected directly to the national 20 kV power grid 
• Dual separate power systems:
• Telco power: 48 V (battery + diesel generator backup) 
• Utility power: 230 V (diesel generator backup) 
• Distribution network is backed by UPS + diesel generators in N+1 configuration 
• Supports up to 30 kW per rack 
• Fiber connectivity:
• Optical circuits to major data centers across Finland and Estonia
• Connectivity to submarine cables and participation in FICIX (Finnish Internet Exchange) 
• Diverse duct / fiber paths entering from several directions 
• The facility participates in Elisa’s data center ecosystem and is marketed as renewable energy-driven and optimized for environmental efficiency 

💼 Who It Serves

• Enterprises and service providers seeking Nordic colocation with sustainable infrastructure
• IT, cloud and web services that require connectivity to Finland and Baltic markets
• Organizations with high-density computing needs (e.g. AI, HPC) that can leverage up to 30 kW/rack
• Customers needing disaster-resilient and secure infrastructure in the Helsinki metro area
• Entities interested in energy-efficient and heat-reuse data center solutions (e.g. district heating integration)