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Flexible colocation data center in the cradle of hydropower.

Modular builds and large hydropower plants in proximity.

29 000 m2


50 MW

Power capacity

1 .08– 1.20

Average PUE


Grid Supplies

RJU1-Rjukan is a colocation data center located in a historic region of Norway. The site consists of 4 buildings, two of them are Tierlll facilities and two are customer specific TierI facilities. The current total capacity is approximately 7,5 MW. The location is ideal for clients with specific requirements for growth as they can start small either with singular racks to support proof-of-concept or operational concepts through to individual 2 MW modules.

The location was chosen because it is the cradle of hydro-electric power in Norway. Consequently, it has several large hydro-power stations in very close proximity ensuring robust and low-cost power to the site.


  • Build Year: 2014 4 buildings 29 000 m2 space available Data rooms from 50-500 m2 (500 - 5000 ft2) & rack solutions available Flexible design which can be scaled up or down based on our clients’ requirements. Tier III certified but can tailor-make your data center requirement to any lower Tier standard. Current fill rate: 50 %
  • Maximum capacity: 40 MW 2 independent grid supplies each fed from multiple hydropower plants. 100% renewable hydropower Average PUE: 1.08 – 1.20 Automatic standby generators N+1 chiller solution designed for precision System prepared for heat reuse through heat exchangers
  • Security personnel 24/7 onsite security personnel Remote monitoring 24/7 Biometric access systems, man traps and intelligent video surveillance. High boundary fencing around the whole area
  • Carrier neutral data center – 18 independent fiber providers available. Two fully redundant meet-me-rooms in different parts of the facility for carriers with diverse fibre paths to them. Office space for clients. Smart hands services.

Modular builds

RJU1-Rjukan From Vest

RJU1-Rjukan is a modular colocation data center site, where Green Mountain have designed modular builds with a size of 2 MW. These modules can be split internally into smaller modules, or 2 MW modules can be combined with Tier III to 10 MW, or to Tier 1 standard up to 35 MW. All solutions can be designed and delivered to support “any” power density, cooling, security solutions etc.

Power supplies

Waterfall in Rjukan

There are 6 hydroelectric plants in the valley. Two of them are located less than 1 km from the site. There is a 2 x 10MW supply available at the site with plans to expand to 2 X 25 MW in near future. However, there is a capability to expand to more than 100MW if needed.
5 % of the total energy production in Norway originates from production in the valley. The National Grid has 2 x 500 MW within 1km of the site. In addition, the natural water reservoirs supporting the hydropower production are massive. Even if it does not rain or snow for months, there will still be water enough to secure production.

Free cooling in a chilly climate

The Valley of Rjukan

RJU1-Rjukan utilizes the cool natural Norwegian air to cool our colocation data center at Rjukan. The town is situated at the bottom of a valley with 500-meter elevation on each side, providing natural cooling with a median temperature of 13 C. This means that for about 330 days of the year we have free cooling in the data center. The valley is so steep that the sun doesn’t shine on the data center for 6 months out of the year.