Issue 005 GB Grid Connection Queue Wednesday Edition

What moved in the GB grid connection queue this week

From this issue, the Grid Queue Pulse publishes every Wednesday. 5 movements across monitored records. Every finding is verified before publication. Evidence packs are provided to subscribers.

5Movements detected
273 GWGate 1 + Gate 2 register capacityGeneration and storage projects classified Gate 1 or Gate 2 in the transmission register; excludes transmission-connected demand and blank-gate entries. Gate 1 does not reserve capacity or a queue place.
GBTransmission + distribution
Connection Queue 1 September 2026
Awel Y Mor · 1100 MW
Bodelwyddan 400kV Substation
This project appeared in the transmission connection register for the first time in the most recent edition.
Verified · evidence pack on file Request evidence →
Connection Queue 1 September 2026
Willington Green Energy Centre · 1025 MW
Willington 400kV Substation
This project appeared in the transmission connection register for the first time in the most recent edition.
Verified · evidence pack on file Request evidence →
Connection Queue 1 September 2026
Swansea North Green Energy Centre · 1025 MW
Swansea North 400kV Substation
This project appeared in the transmission connection register for the first time in the most recent edition.
Verified · evidence pack on file Request evidence →
Connection Queue 1 September 2026
Fiddlers Ferry BESS · 900 MW
Fiddlers Ferry 275kV Substation
This project appeared in the transmission connection register for the first time in the most recent edition.
Verified · evidence pack on file Request evidence →
Connection Queue 1 September 2026
Hockliffe GEC (Ethos Green) · 850 MW
Dunstable 400kV Substation
This project appeared in the transmission connection register for the first time in the most recent edition.
Verified · evidence pack on file Request evidence →

Demand Watch

Named data-centre and large demand-side projects Cairnel is tracking, cross-referenced against the nearest network operator’s own published constraint data. Situational intelligence, not a claim about any project’s credibility or likelihood of connecting.

Ark Data Centres Elstree campus (former Mercure Hotel)
A41 Watford Bypass (former Mercure Hotel site), Watford/Aldenham, Hertfordshire
200 MW · £2.0bn
Water Ln Primary 11kV1.2kmGreen demand
Ark Data Centres Longcross Park LP02
Chobham Lane, Longcross, Chertsey, Surrey (KT16 0EE)
36 MW · £807m
MVEE Primary2.4kmGreen demand
Colt DCS Hayes Digital Park expansion
Uxbridge Road, Hayes, Hillingdon, West London
97 MW · £2.5bn
Hayes Primary0.0kmRed demand
Premier Park data centre (SEGRO / Pure DC)
Premier Park Road, Park Royal, West London
56 MW · £1.0bn
Park Royal Primary1.1kmRed demand
QTS Cambois Campus
Saint Eligius Way, Cambois, near Blyth, Northumberland -- former coal-fired power station site
720 MW · £10.0bn
Wansbeck1.2kmDemand not rated
Vantage Data Centers LHR2
Chandos Road, Park Royal, London NW10
20 MW
Park Royal Primary1.1kmRed demand

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Here’s what Cairnel currently knows about one of the largest projects in the queue: Kilmarnock BESS fact sheet →

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Coverage reflects records Cairnel had matched as at 2 September 2026.

Public-data acknowledgements

Cairnel uses multiple sources to build the picture. Some of the public ones that need referencing are National Energy SO.

Cairnel launched in July 2026. This is Issue 005. The Pulse is produced weekly — every item is verified before it appears here. We are early and we know it. If something looks wrong, or you want to suggest a project we should be watching, write to us: hello@cairnel.co.uk