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Data centres Β· Hertfordshire

South Mimms Data Centre Site (formerly DC01UK)

Consented

The South Mimms development site was sold to Equinix in October 2025. The earlier developer reported planning approval and a 400 MVA power reservation. Apparent power in MVA is not equivalent to MW without a power factor, and a reservation is not metered demand.

Sources reviewed 2026-10-08 Β· Equinix

Project facts

StatusConsented
Developer / operatorEquinix
RegionHertfordshire
CountryEngland
Published ratingNot published
Rating definition400 MVA reservation
Connection / routeElstree / Letchmore Heath connection described by the previous developer
Delivery targetNot verified in this profile

Electricity demand and supply

IT capacityNot published
Grid connection capacityNot published
Apparent power reservation / substation rating400 MVA
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 exact site coordinate has not been confirmed. The map is for geographical context; consult the linked project sources for current plans.

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The map shows geographical context only. No unverified site pin is displayed.

    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. Ownership change
      Reviewed 2026-10-08
    2. Planning approval and 400 MVA reservation
      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.