AI Growth Zones in the UK: where they are and what they mean for power

The five UK AI Growth Zones at a glance

Zone	Where	Announced	Stated power plan	Named partners
Oxfordshire	Culham	30 April 2025	None published	None named in the release (GOV.UK)
North East	Blyth and Cobalt Park, near Newcastle	16 September 2025	1.1 GW within six years	Blackstone, Nscale, QTS (GOV.UK)
North Wales	Prosperity Parc (Anglesey) and Trawsfynydd (Gwynedd)	13 November 2025	None published	Consortium led by Stena Line; investor not yet named (GOV.UK)
South Wales	M4 corridor, Newport to Bridgend	20 November 2025	Potential over 1 GW by the early 2030s	Vantage Data Centers, Microsoft (GOV.UK)
Lanarkshire	DataVita site, Airdrie	29 January 2026	More than 500 MW of on-site power within four years	DataVita, CoreWeave (GOV.UK)

Power figures are what each announcement states, not connected or operating capacity. A stated plan is not a grid offer. Compare the picture for existing sites on the UK data centre map and capacity guide.

What government says an AI Growth Zone is

Government describes AI Growth Zones as areas where it improves access to power and provides planning support so that AI data centres and the infrastructure around them get built. Regional authorities, local authorities and industry can apply, and the application guidance gave no closing date when it was last updated in June 2025. The first announcement set a minimum bar: a proposal must show access to power connections of at least 500 MW, or a clear plan to get there (GOV.UK, 30 April 2025).

The policy paper Delivering AI Growth Zones (13 November 2025) sets out four areas of reform: making the energy system AI-ready, reforming the planning system, providing opportunities for all, and support for investors.

What a zone changes in practice

The North Wales announcement (GOV.UK, 13 November 2025) is the most specific. It says zones get priority access to available grid capacity; that planning guidance now prioritises AI infrastructure, cutting waits from more than four years to as little as two; and that a £4.5 million AI planning team will support councils. It also says data centres in areas where they could reduce pressure on the network may get significant electricity bill discounts, and that developers could be supported to build their own high-voltage lines and substations.

These are policy statements. Government does not publish a connection date for any zone, and status can depend on conditions: the Lanarkshire release says zone status depends on agreed milestones being met.

Zone by zone

Oxfordshire (Culham)

The first zone, announced on 30 April 2025 with the application process. The release names no developer and gives no power figure, so there is nothing sourced to say about capacity here yet.

North East (Blyth and Cobalt Park)

Announced on 16 September 2025 as part of the US-UK technology partnership. Government says the zone, including the new Blyth data centre, will raise energy capacity to 1.1 GW within six years, and expects up to £30 billion of private investment, of which Blackstone has committed £10 billion at Blyth. Nscale is rolling out chips at Cobalt Park for Stargate UK with OpenAI and NVIDIA, and the release quotes the regional mayor on QTS opening its Cambois campus at Blyth in 2028 (GOV.UK).

North Wales

Confirmed on 13 November 2025. The site straddles the Menai Strait, with Prosperity Parc on Anglesey and Trawsfynydd in Gwynedd. The consortium includes Stena Line, the Isle of Anglesey County Council and Bangor University; the release says work is under way to secure an investment partner and states no power figure. It expects 3,450 jobs (GOV.UK). The Welsh grid and planning context is on our data centres in Wales page.

South Wales

Announced on 20 November 2025, with sites along the M4 corridor from Newport to Bridgend, including the former Ford Bridgend Engine Plant. Vantage Data Centers and Microsoft are named, the zone has the potential to harness over 1 GW by the early 2030s, and government puts the investment at £10 billion and at least 5,000 jobs (GOV.UK). Existing Newport capacity is covered on the Wales page.

Lanarkshire

Announced on 29 January 2026 and based on DataVita's data centre site at Airdrie in North Lanarkshire, with CoreWeave rolling out NVIDIA GPUs. DataVita plans more than 500 MW of on-site power within four years, to come from on-site renewables, and the release cites £8.2 billion of private investment and more than 3,400 jobs (GOV.UK). Scottish planning rules for large schemes are on the Scotland page.

What it means for on-site solar

A rooftop array does not power an AI campus. The arithmetic is short. A 10 MWp roof array at about 900 kWh per kWp a year (our PVGIS 5.2 runs give 775 to 940 across 21 UK clusters, and 788 for North Lanarkshire) generates about 9 GWh a year. A 1 GW site running flat out uses about 8,760 GWh a year, so that roof covers roughly 0.1% of it. Even a 50 MWp ground-mount scheme would cover about 0.5%.

What solar can do is narrower: cut daytime grid import on a building, and provide dated, metered on-site generation as evidence for Scope 2 reporting and hourly matching. Whether that is worth building depends on the roof, the tariff and the finance route, not on the zone. This site is a publisher, not an installer, and we have no involvement in any zone. If you are weighing solar on an AI or data centre site, the AI data centres guide and the AI data centre explainer cover the power-density side, and how many AI data centres the UK has covers the count.

How this page is kept current

Every figure above comes from the GOV.UK page linked beside it, read on 30 October 2026, and the page is re-checked against the collection when new zones are announced. We state a number only where a government page states it, and say so where it does not. If you spot an error, email dc@seodons.co.uk and we reply by email.