Microsoft Grange Castle Campus

Partially operational
Microsoft Grange Castle Campus is a partially operational data center campus in Dublin, Ireland, run by Microsoft (Azure), with an estimated 325 MW of live IT capacity. The figure adds up its buildings in service: published capacity where it exists, estimates from floor area for the rest. It has 12 buildings in service. The site dates from 2009. One of its 14 buildings has a published grid connection of 40 MW. Over the 12 months to June 2025, Microsoft's Dublin operations drew ≈149 MW of electricity on average, as the operator reports it for the metro; the figure is not divided between sites.
Microsoft (Azure)

Microsoft Campus, Grange Castle Business Park, Nangor Road, Clondalkin, Dublin 22, D22 F1W8
Estimated capacity
≈325 MW
from the live buildings
Estimated footprint
at least 232 942 m² (10 of 12 buildings)
floor area
Facilities in campus
12
Planned expansion
Coming soon
Last updated: 10 October 2026

Source: services.arcgis.com