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Data centres Β· Buckinghamshire

CyrusOne LON6, Iver Heath

In planning

CyrusOne’s current LON6 site specification gives 108 MW of IT capacity, replacing the 90 MW figure in earlier announcements. Initial capacity is targeted for 2028. Current metered demand and completed construction are not established by the announced rating.

Sources reviewed 2026-10-08 Β· CyrusOne

Project facts

StatusIn planning
Developer / operatorCyrusOne
RegionBuckinghamshire
CountryEngland
Published rating108 MW
Rating definitionCurrent published IT capacity
Connection / routeNear Iver Grid Supply Point
Delivery target2028 (developer target; subject to change)

In development. Earlier material reports planning progress; current consent conditions and construction stage require confirmation.

Electricity demand and supply

IT capacity108 MW
Grid connection capacityNot published
Apparent power reservation / substation ratingNot published
Measured average electricity demandNot published
Published annual electricity consumptionNot published
Power usage effectiveness (PUE)Not published

Where its electricity comes from

Grid supply. Site-specific renewable contracts, private-wire supply and annual consumption have not been confirmed in the reviewed source.

Cooling, water and backup power

Cooling and water-use figures have not been independently confirmed.

Backup capacity and fuel are not quantified in this profile.

Rated capacity is not present consumption. Renewable procurement claims describe contracts or certificates unless hourly matching and physical supply are evidenced. No live site meter is connected to this page.

Project location

The map distinguishes published or mapped site points from approximate location and connection areas. Dashed circles are context areas, not development boundaries. Follow the location sources for site plans.

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Markers identify sites, published points or labelled connection areas. Markers are not site boundaries or entrances. EGL2’s additional outlines and route layers are explicitly identified in the developer’s map data.

Sources and review date

  1. Current 108 MW specification
    Reviewed 2026-10-08
  2. Development programme
    Reviewed 2026-10-08

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GRID CONTEXT

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National figures from the Carbon Intensity API. These do not measure an individual project’s output, cable flow or data-centre electricity use.