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4,573 tracked

Entities

Registers of the facilities, companies and countries on record, with the ownership chains between them.

709 of 4,257 facility records have an operational measure

4,257 facility records are individually browsable here, of which 709 have an operational measure: power, GPU or FLOP capacity, or a substantive description. The other 3,548 establish that a site exists and stop there. Which of the two a record is depends almost entirely on the catalogue it arrived in.

Two counts on this page

Two counts appear on this page and they are not the same quantity. The masthead stamps 4,573 tracked records: the full corpus across 110 countries, the figure used site-wide. The register and the plate count the 4,257 that are individually browsable; the 316 in between are rows a licensing term keeps from being served as their own record. They inform aggregates and they are not hidden. They cannot be opened, so a figure about what a reader can inspect must not count them. The same universe is plotted in space on the map, rolled up by jurisdiction on Countries, and the organisations that own and operate these sites are in the company register.

  1. Epoch AI Frontier Data Centers7064 measured91.4%
  2. Epoch AI GPU Clusters437396 measured90.6%
  3. PeeringDB facility registry1,56963 measured4.0%
  4. IM3 / PNNL data-center corpus3912 measured0.5%
  5. OpenStreetMap (tagged data centers)1,1731 measured0.1%
  6. OpenStreetMap2310 measured0.0%
  7. Microsoft Azure region documentation560 measured0.0%
  8. Oracle Cloud region documentation450 measured0.0%
  9. 43 smaller catalogues285183 measured64.2%

Coverage by catalogue. Each band is one catalogue: its length is that catalogue’s share of the largest one’s row count, and the inked run inside it is the rows with at least one operational measure.

Nothing here is schematic; both lengths are measured proportions of the counts printed beside them.

No share-of-megawatts is drawn: every megawatt-bearing row satisfies the measured predicate by construction, so a capacity share would be a tautology.

Counts cover the full individually-browsable set, 4,257 rows, read 4 September 2026.

The smallest catalogues are folded into one band whose run is hatched, because it averages catalogues of both kinds. Each named catalogue’s key opens the register below scoped to its rows.

Epoch AI Frontier Data Centers runs 91.4% measured across 70 records; OpenStreetMap runs 0.0% across 231. No single catalogue falls in between; the hatched band does, but it is the fold of 43 smaller catalogues and reads mid-scale only because it averages the two kinds. The separation exists because the two kinds of catalogue do different jobs: one is a research dataset built by measuring sites, the other an infrastructure registry built by recording that they exist.

Shown whole, most of the 4,257 rows could not answer the question a reader arrived with. The positional records are not filler: a site that exists is a real fact, and for a governance reader tracing where capacity might appear it is often the fact that matters. But it is a different fact from a megawatt figure, and a register that prints them in one undifferentiated count makes a uniformity claim its records do not support.

The register

Showing all 43 matching records, including the 39 positional ones with no capacity figure attached. Show only the 4 measured.

143 of 43Page 1 of 1
FacilityCountryTypeStatusPower (MW)
Mare Nostrum 5Epoch AI GPU ClustersESAI trainingOperational6
AWS Europe (Spain)AWS region documentationESHyperscale DCOperational
AZURE Spain CentralMicrosoft Azure region documentationESHyperscale DCOperational
GCP Europe Southwest 1Google Cloud region documentationESHyperscale DCOperational
OCI Spain Central (Madrid)Oracle Cloud region documentationESHyperscale DCOperational
OCI Spain Central (Madrid 3)Oracle Cloud region documentationESHyperscale DCOperational
Equinix MD5 (Madrid)Equinix SEC 10-K (2024)ESColocationUnder construction
MareNostrum 5 (EuroHPC)EuroHPC Joint UndertakingESHPC centerOperational
Iron Mountain MAD-1 (Madrid)Iron Mountain SEC 10-K (2024)ESColocationOperational
Data Center Bilbao ArasurOpenStreetMapESColocationOperational
Centro de Procesamiento de Datos SurOpenStreetMapESColocationOperational
Centro de Procesamiento de Datos del Gobierno de CantabriaOpenStreetMapESColocationOperational
Mozoilo AJVPOpenStreetMap (tagged data centers)ESHyperscale DCOperational
Centro de Datos Alcalá (Alcalá Data Center)OpenStreetMap (tagged data centers)ESHyperscale DCOperational
The WeaverOpenStreetMap (tagged data centers)ESHyperscale DCOperational
inforland.comOpenStreetMap (tagged data centers)ESHyperscale DCOperational
centro de datos trasbase NegratínOpenStreetMap (tagged data centers)ESHyperscale DCOperational
AdamOpenStreetMap (tagged data centers)ESHyperscale DCOperational
Amazon Data Services Spain S.L.U.OpenStreetMap (tagged data centers)ESHyperscale DCOperational
Data Center KIO MurciaOpenStreetMap (tagged data centers)ESHyperscale DCOperational
Data Center KIO ValenciaOpenStreetMap (tagged data centers)ESHyperscale DCOperational
Centre de Processament de Dades IBMOpenStreetMap (tagged data centers)ESHyperscale DCOperational
Cloud Center AndalucíaOpenStreetMap (tagged data centers)ESHyperscale DCOperational
DATA4 Madrid-Alcobendas - MAD1PeeringDB facility registryESColocationOperational
NTT Madrid 1 Data Center (MAD1)PeeringDB facility registryESColocationOperational
Espanix DatacenterPeeringDB facility registryESColocationOperational
Equinix BA1 - BarcelonaPeeringDB facility registryESColocationOperational
Equinix MD2 - MadridPeeringDB facility registryESColocationOperational
Digital Realty Madrid MAD1-2PeeringDB facility registryESColocationOperational
CyrusOne Madrid 1PeeringDB facility registryESColocationOperational
Iron Mountain Data Center - Madrid (MAD-1)PeeringDB facility registryESColocationOperational
IaaS Datacenter MadridPeeringDB facility registryESColocationOperational
IPCore Datacenter MadridPeeringDB facility registryESColocationOperational
Equinix BA2 - BarcelonaPeeringDB facility registryESColocationOperational
Equinix MD6PeeringDB facility registryESColocationOperational
Equinix MD1 - MadridPeeringDB facility registryESColocationOperational
Templus DC Málaga MAL01PeeringDB facility registryESColocationOperational
NIXVAL DatacenterPeeringDB facility registryESColocationOperational
Templus DC Barcelona BCN01PeeringDB facility registryESColocationOperational
nLighten Madrid MAD1PeeringDB facility registryESColocationOperational
Global Switch MadridPeeringDB facility registryESColocationOperational
Digital Realty Madrid MAD3PeeringDB facility registryESColocationOperational
Cogent MadridPeeringDB facility registryESColocationOperational