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Bahnhof Pionen Hagersten

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Pionen is located in a nuclear bunker from the Cold War. The entrance is protected by a 40 centimeter thick steel door.

Pionen has repeatedly featured in international media.

  • 1110 square meters.
  • 100 KW cooling capacity per corridor, totalling about 1.5 MW of cooling capacity.
  • Fire prevention and fire fighting systems.
  • CCTV installations in and outside the facility.


  • Cold War Bunker, 100 ft deep
  • Extremely energy efficient
  • Innovative cooling system
  • Connected to district heating


  • Powerful IP and carrier services
  • Fully redundant routers
  • Diverged cable paths
  • Dark fiber from Stokab and Skanova


  • Dual Electricity Supply
  • Accurate Billing Guarantee
  • Automatic Diesel Generators
  • UPS Battery Backup heating


  • Security Class 2 & Alarm Class 3
  • Video Surveillance
  • Aspirating Smoke Detectors
  • Extinguishing Agent IG55


  • Website: www.bahnhof.net
  • Address: Tunnelgatan 2 111 37 Stockholm, Sweden