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Building Norway’s largest data center campus

OSL-Hamar is under construction and will support single tenant TikTok with their increasing data storage needs in Europe


m2 of IT space in existing buildings


IT space in planned buildings

5 X 30MW

Power Capacity


Average PUE

A short drive from Hamar city, in the Innlandet region, you will find our newest state-of-the-art data center site, OSL-Hamar. The potential campus footprint of up to 1.5 million ft2 can house five buildings, each with a capacity of 30 MW. As of now, construction is underway for the initial three buildings. All three will be ready by summer 2024.

Moreover, we are pleased to announce that TikTok, our customer, has secured a contract for these three buildings, effectively utilizing the entire 90 MW capacity. Furthermore, they retain the option to expand their capacity to 150 MW. This means that our current planned capacity at site is fully committed.

The site will be built and operated according to Green Mountain's high sustainability standards. This includes everything from the use of renewable power, world-leading energy efficiency, and preparation for heat reuse.

We are currently engaged with industry and research institutions to identify potential projects and initiatives that can benefit from the residual heat produced by the data centers.


  • Build Year: 2023 3 buildings, with three floors in each building 2 more buildings planned Designed according to TIER III standard One single tenant in the entire data center Current fill rate: 100%
  • Maximum Capacity: 5 x 30 MW 100% renewable hydropower N+1 redundant cooling system with chilled water loops with hot aisle containment system for whitespace System prepared for heat reuse through heat exchangers Average PUE: 1.20 Automatic standby generators 2 independent grid supplies each fed from multiple hydropower plants
  • 24/7 onsite security personnel Remote monitoring 24/7 Biometric access systems, man traps and intelligent video surveillance. Security fencing around the whole campus area
  • Separate office building for the site personnel Carrier neutral data center 70-minute drive to Oslo International Airport

Free cooling in a chilly climate

OSL-Hamar utilizes the natural Norwegian air to cool our colocation data center at Hamar. The average temperature in the area is 5,8°C. July is the hottest month of the year with an average temperatur of 16,8°C. Read more about cooling technologies in Green Mountain below.

Are you our next colleague?

Data Center Career - Technicians at Green Mountain

At Green Mountain in Hamar we are currently building a new team to support the development of our new data center campus. As we gear up for the operational phase, our need for skilled professionals continues to grow.

We are on the lookout for expertise within electrical, mechanical, automation, cooling solutions, plumbing, fiber and many other specialized areas.

You can send us an open application detailing your experience and aspirations, or you can keep an eye our on our careers page for available positions.