Serverius and Fuzion are now part of Kolo, a Northern European data center platform.

Kolo SE2 Tellus Stockholm

At SE2 Tellus, your infrastructure is secured behind multiple layers of physical protection and 24/7 on-site guards—ideal for AI-ready, high-density racks. Located just 10 km from its twin site SE1, SE2 delivers built-in geographic redundancy, 2N power architecture, and 100% renewable energy.

6 MW

Combined power capacity across Kolo Stockholm facilities.

Twin

Interconnected metro sites Kolo SE1 and SE2 in Stockholm.

24/7

On-site security personnel.

N+N

Full power systems redundancy.

Location

Located in the Southern part of Stockholm with direct E4/E20 highway access. 25 minutes from Stockholm center and 45 minutes’ drive to Stockholm Arlanda Airport. Dedicated visitor parking is available.

Why Stockholm?

L

Economic Centre of the Nordics

  • #1 Highest GDP of all Nordic Capitals
  • The greatest number of Forbes 2000 Companies in the Nordics

World-Leading Digital Environment

  • Sweden ranks 1st among EU countries in the 2025 European Innovation Scoreboard.
  • 71 % of Swedish companies use intermediate or advanced cloud services, leading the EU

Hotspot for Unicorn Start-ups

  • Stockholm is ranked #2 globally for unicorns per capita, second only to Silicon Valley.
  • Sweden placed 15th globally in total unicorn count as of July 2025

Leader in Global Connectivity

  • ~99% national 5G coverage achieved by end‑2024
  • 85% FTTP (full fibre) household coverage, ahead of EU average

World leader in Sustainability

  • Sweden sits at #2 globally on the SDG Index and leads in renewable energy use
  • Thanks to renewables and nuclear power, Sweden meets 98% of its electricity needs with low-carbon sources.

Reliable, Low-Cost Power

  • One of Europe’s most reliable power grids, supporting mission-critical uptime.
  • Low-cost renewable electricity
  • Sweden ranks 4th out of 142 countries in the 2024 World Justice Project Rule of Law Index.
  • Among the top 5 countries worldwide for judicial independence and unbiased legal systems.

Leader in High-Tech

  • 57 % of the Swedish workforce works in knowledge‑intensive services (EU: ~38 %)
  • The top three among EU countries for the share of engineers & scientists.

Built for performance, powered by nature

Performance starts with clean power.

Sweden’s 98% clean electricity and 70% renewable energy sources power your operations within one of the world’s most sustainable grids. At our Stockholm facilities, your servers do double duty—advanced heat recovery systems capture excess heat and channel it into the city’s district heating networks, warming local homes while your business runs efficiently.

Across both Stockholm and Piteå, cold Nordic climate conditions provide natural cooling year-round, slashing energy costs and turning geography into your advantage.

With Sweden legally bound to net zero by 2045, your operations stay ahead of Europe’s evolving energy landscape with fewer compliance concerns and more predictable costs.

Beyond basic support: the Kolo approach

Our technical team becomes an extension of yours, providing the expertise and responsiveness you expect for critical infrastructure.

Dedicated support

Direct access to senior engineers

24/7 Coverage

On-site support during business hours, with 24/7 on-call availability

Flexible contracting

Scale from a single cabinet to private suites with custom terms

Implementation expertise

On-site migration and setup support

”Working with Kolo has had a major impact on our resilience, stability and security. If you don’t hear about IT, it’s running smoothly – and that’s exactly what we have with Kolo.”

Michael Ebenhardt Kristensen, IT manager, Europcar Denmark

SE2 technical specifications

Maximum security meets enterprise reliability. SE2 combines 24/7 guarded facilities with N+N power redundancy and high-density capabilities.

Power & backup resilience
  • Renewable Supply: 100% certified Swedish renewable energy backed by Guarantees of Origin
  • Redundancy: True N+N power distribution with independent A+B power paths to each cabinet 
  • Backup Systems: N+N across all power backup systems—Tier 3 equivalent
Cooling efficiency
  • Design: Hot/cold aisle containment with N+1 redundant cooling units supporting high-density deployments of 30+ kW per cabinet 
  • Efficiency: Free cooling operational approximately 40% annually utilizing Sweden’s climate 
  • Environmental: Closed-loop cooling systems using low-GWP refrigerants, providing excess heat to the district heating network
Security & fire protection
  • Physical Security: SSF Protection Class 3 facility with 24/7/365 security guard presence. Multi-factor authentication access control with double interlocked door systems at all entry points
  • Security Customization: Adaptable security controls with client-specified enhancements available upon request, including EMP protection
  • Fire Protection: VESDA early warning system with zoned Inergen and Novec gas suppression
High-density infrastructure
  • Racks up to 50 kW with efficient cooling
  • Ideal for AI, HPC, and hybrid deployments
Sustainability & environmental impact
  • Waste heat recovery systems feed back to the data center.
  • On-site solar panels contribute to renewable energy generation
  • Sweden’s low-cost, green electricity makes operations both clean and cost-effective
On-site support & amenities
  • Technical assistance: 24/7 Remote Hands service 
  • Workspace options: Secure staging areas, unpacking zones, and dedicated customer work areas 
  • Facility amenities: Parking, restrooms, and meeting rooms

Ready to experience SE2?

Let’s assess your infrastructure needs and explore how Kolo SE2 aligns with your technical and business requirements.

Exploring other Swedish facilities?

Find the right fit for your footprint.

SE1

Kolo DC Atlas Stockholm

SE3

Kolo DC Tellus Stockholm