Digital Realty: Madrid San Blas Campus

Digital Realty's Madrid campus sits in the Julián Camarillo industrial estate in the San Blas-Canillejas district of east Madrid, about 10 minutes from the city centre and Barajas airport. Interxion entered Madrid in 2000 by converting a former printing plant on Calle de Albasanz. The cluster grew into the area the operator markets as Madrid's "Silicon Alley".

Ownership and land. The two Calle de Albasanz buildings are leased. Interxion bought freehold land on Calle de Emilio Muñoz for its third building. Digital Realty acquired Interxion in March 2020, and in June 2020 Interxion bought a 14,550 m² plot on Calle de Alfonso Gómez for the fourth. Digital Realty retired the Interxion brand in 2022. In October 2024 Digital Realty bought about three acres on Calle de Alcalá, next to the Alfonso Gómez plot, for a fifth building. It earmarked about €300 million for that project.

Interconnection. A private fibre ring of about one kilometre links the buildings, so cross-connects work across the campus. The campus hosts more than 130 carriers and ISPs, the ESpanix and DE-CIX Madrid exchanges, and cloud on-ramps for AWS, Azure, Google Cloud, Oracle and IBM. Digital Realty says its Madrid sites carry about 65% of the Iberian Peninsula's internet traffic.

Power. UFD (Naturgy) operates the medium-voltage network in the estate. The Alfonso Gómez building takes a direct 45 kV high-voltage connection. Its on-site substation splits supply into four independent 10 kV systems, with diesel generator backup. All supply is renewable under a long-term power purchase agreement with Acciona Energía signed in 2022. About 100 kW of rooftop solar serves non-IT loads.

Customers and certifications. More than 400 customers use the campus, including IBM (its Madrid cloud region), Netflix, Disney+, Banco Santander, Correos and Renfe. The Albasanz 73 building was the first data centre in Spain to earn LEED Gold, in 2013. The Alfonso Gómez building is targeting LEED Gold.