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DataCentersExposed
Operating

CryrusOne LON4

Slough, Slough, United Kingdom

Source: OpenStreetMap

CryrusOne LON4 is an operating data center in Slough, United Kingdom, operated by CyrusOne LLC. DataCentersExposed has documented a 125,302 sq ft footprint and 1 environmental-permit record at this site. It runs on United Kingdom's grid, which was 36% fossil-fuelled at 217 gCO₂e/kWh in 2025 (Ember).

Reporting by · Updated Jun 17, 2026

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Real parent
CyrusOne LLC
Operator
CyrusOne LLC
Est. capacity
~25-55 MW
Footprint
125,302 sq ft
Grid carbon
217 gCO₂/kWh
Clean electricity
64%
Region
Slough
Attribution & capacity confidence:mediumprimary source

Overview

source: link

CyrusOne LON4 is a mapped data center in Slough, United Kingdom, operated by CyrusOne LLC. Available records put its footprint at 125,302 square feet. Ownership above the operator is not disclosed in the facts at hand.

Operator chain

The grid behind this site

source: Ember · Eurostat
Grid carbon intensity
217 gCO₂/kWh
Clean electricity
64%
Fossil electricity
36%

National grid context, not this facility's own metering. Full country picture: United Kingdom data centers.

In the news

source: Google News (local + English)

Environmental permits

source: Permit register
  • CYRUSONE UK4 LIMITEDEPR/EP3508PS
    EPR permit · holder "CYRUSONE UK4 LIMITED" · Slough · Combustion; Any Fuel =>50MW - 1.1 A(1) a) · within ~2 km of the mapped site
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Methodology & sources

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