Green Mountain FRA-Mainz / Green Rocks Campus
About Green Mountain FRA-Mainz / Green Rocks Campus
Green Mountain and KMW are building a three-building data center campus on Ingelheimer Aue in Mainz. Current sponsor pages disagree between 54 MW and 80 MW, and the first section is targeted for Q4 2026.
Capacity
No additional capacity claims are published.
Development
4 phases · 5 milestones18 MW original phase; current RFS target Q4 2026.
1 building
Second section started; 18 MW and about 6,000 sqm IT space.
1 building
No verified construction start.
1 building
Capacity handover over roughly 3.5 years; phase allocation undisclosed.
3 buildings
Infrastructure
54 MW
Green Mountain current figure and original approved plan.
18 MW
Per-building IT figure for three-building plan.
18,000 sqm
Three buildings of about 6,000 sqm each.
60 MW thermal
Heat output, not IT load or electrical generation.
54 MW electrical
Twelve-engine H2-ready plant; also expected to serve grid hours.
110 kV
Redundant supplies; renewable-energy portfolio claim.
Rhine water cooling with heat-reuse priority.
Project map
0 of 1 project point mappedNo map point available
Facts & sources
Published claims and their source links.