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A sustainable data center built for the modern world.

SVG-Rennesøy is a unique Tier III certified mountain hall data center in a former high security NATO ammunition storage facility.

22 600 m2


2 X 26MW

Power Capacity


Average PUE


Grid Supplies

We have converted it into a unique high-security mountain hall colocation data center with 22 600 m2 (230000 ft2) space available. The main data center comprises of a total of 6 mountain halls, each with two-story concrete buildings built within the mountain. The infrastructure has been designed to be expanded up to 2 x 26MW.

Our mountain hall data center is flexible by design and can be scaled up or down based on our clients’ current and future requirements.

Clients can start with one rack and expand as the need increases. We have server rooms from 50 m2 in size up to 1550 m2 for a single room, and multiple rooms are available. Our clients can have their own data center located within our facilities if they choose to do so.

Although we are Tier III-certified, we can tailor-make your data center requirement to any lower Tier standard. Power density, cooling, security level etc. can be delivered according to customer requirements.


  • Build Year: 2013 6 x two-story mountains halls 22 600 m2 (230000 ft2) space available Data rooms from 50m2 – 1550m2 & 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: 2 x 26 MW 3 independent grid supplies each fed from multiple hydropower plants. 100% renewable hydropower Fjord cooling solution Average PUE: 1.18 Automatic standby generators
  • Former NATO ammunition storage facility built to withstand nuclear bomb and natural disasters. 24/7 onsite security personnel Remote monitoring 24/7 Biometric access systems, man traps and intelligent video surveillance. Fire suppression using hypoxic air ventilation system. EMP Secure
  • Carrier neutral data center – 19 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.


NO-UK installation outside SVG1-Stavanger

SVG-Rennesøy has redundant fiber paths into the site (last mile) from multiple different carriers, and also manage own fiber both in and out of Norway. The connectivity out of our SVG-Rennesøy data center secures low-latency options both west to UK (6.5ms to London), east to RJU1-Rjukan, Oslo and Stockholm (5.5 ms) and south to major markets through Denmark to Germany, Netherlands and other core data center hubs.

SVG-Rennesøy is uniquely positioned to support high transaction levels either as an own data center or as a potential disaster recover/over-flow site.
The above photo is from the innstallation of the NO-UK cable, connecting SVG-Rennesøy directly to Newcastle in the UK.

Power Supplies

Renewable hydropower - Vemork Power Station

SVG-Rennesøy has three independent grid supplies each fed from multiple hydro electric power plants to secure resilience and redundancy. The result is outstanding robustness of supply. (estimated 99.99997%). To the power supply, we have added additional levels of security in terms of N+1 prime rated generators.

Phase 1 expandable to 2 x 26 MW if provided in Tier III setup, or up to 52 MW if utilized with independent power feed.

Cooling Solution

SVG1-Stavanger with the fjord

SVG-Rennesøy has a cooling source available from an adjacent deep water fjord. To secure consistent temperature for cooling, water enters our cold water basin through use of gravity from pipes reaching 100-meter depth. Here, water temperature is stable at 8C (46F) all year round.