A free resource: data centre schemes in development across the UK, each qualified from primary sources and rated by how it plans to be powered. Edition 1 was published on 13 October 2026; this is Edition 2, published on 10 November 2026.
Under constant review, changes or additions will be made to the map as soon as they are processed.
Two further layers follow: local response, measured by recorded objections, on 20 November, and who ultimately controls the schemes on 27 November. Corrections and missing schemes are welcome at mark@markdmoore.co.uk, with a link to the planning record.
Proposed and under-construction data centre schemes only. This is not a map of all UK data centres: operating sites are not shown.
Data centre schemes in development in the UK: proposed, consented or under construction, including expansions of existing sites. It is not a population of UK data centres; operating data centres are excluded unless an undelivered expansion qualifies, and then only the expansion is shown. Capacity is the undelivered element only; operating capacity is out of scope. Schemes below 5 MW are excluded.
A scheme appears only when four facts are each stated in a primary source (developer, planning authority or government): a named site, a capacity figure, a supply arrangement, and a dated status. Trade press is not used to qualify a scheme. Capacity figures measure different things and are shown as stated.
Schemes in development that do not yet meet all four tests. They are shown so the map's coverage can be judged, not as confirmed schemes. Sizes on the watch list may come from trade press and are labelled by source; a scheme moves onto the map only when every test is met from a primary source. Candidates have every test held or awaiting verification; the others are missing at least one. Readiness colours (hollow circles): Green (G) one item to verify and nothing failed; Amber (A) two or more to verify, or one test failed; Red (R) two or more tests failed; light blue (N) planning not commenced.
Green: new clean supply contracted to the site, or co-located with it, with the counterparty or asset named, and no on-site fossil prime power. Amber: grid supply only, or a clean-power claim not tied to a named new asset. Red: on-site or dedicated gas or other fossil generation planned as primary or bridging power. Standby plant is recorded but does not change the rating. A light-blue ring marks a scheme at pre-application; its fill still shows the supply rating.
Base map: Natural Earth country boundaries, roads, urban areas and populated places at 1:10m (public domain), held in the page; no map service or API key is used. The road layer shows motorways and principal roads only and is indicative at local scale. Positions are geocoded: postcode centroids from postcodes.io (from the planning record where held, otherwise from a directory listing), published site points, or named-site coordinates; six schemes with no locatable site are placed at the nearest locality. Each pop-up states the basis. Owners are shown by platform; private individuals are not named.