Data Center Campus
Green Mountain: FRA Mainz Campus
Campus at a Glance
Norwegian data center firm Green Mountain is developing a new campus outside of Frankfurt, Germany, forming a new joint venture with energy firm KMW. The two companies have formed a 50:50 joint venture to develop this data center site in Mainz. Three buildings are planned at the 25,000 sqm (269,100 sq ft) site, known as FRA1-Main, and to be located adjacent to KMW's power plants.
- The first 6,000 sqm (64,600 sq ft) building broke ground in Autumn 2023 and topped out in February 2025.
- The site will utilize river cooling from the adjacent Rhine River and target a PUE of 1.3. Up to 60MW of waste heat will be fed into the Mainz district heating system.
Buildings
Sites on this Campus
| Site | Operator | Status | Operational | Building Size | Built |
|---|---|---|---|---|---|
| Green Mountain: FRA Mainz 1 | Green Mountain AS |
Under Construction
|
— | — | 2026 |
| Green Mountain: FRA Mainz 2 | Green Mountain AS |
Planned
|
— | — | 2027 |
| Green Mountain: FRA Mainz 3 | Green Mountain AS |
Planned
|
— | — | 2028 |
Map and Nearby Locations
Green Mountain: FRA Mainz Campus Power Growth Over Time
Campus Photos
Developer
Green Mountain AS design build and operate high security, robust wholesale colocation data centres.
The companyhas two data centres in Norway with plans to develop in other regions. The data centres operate on 100% low cost renewable power and use of free cooling creating unique power efficiency. Both data centres, DC1-Stavanger and DC2-Telemark have achieved Uptime Institute Tier III certification as the only Nordic colocation provider. In addition both data centres have the ISO 9001 and ISO 14001 certifications in place.
The data centre near Stavanger (DC1-Stavanger) is built deep inside a mountain in a former high security NATO ammunition store.
The data centre in Telemark (DC2-Telemark) is in the ‘cradle of hydro power’ in Norway with multiple local hydro power plants.
Smedvig is the majority owner of Green Mountain.