Europe's data centre power and permitting limits, explained

Building an AI data centre in Europe takes roughly 18 to 24 months, but getting a grid connection can take three to eight years, according to reporting summarised in April 2026. Governments are responding with fast-track permits, queue reform and rules that make new data centres bring their own power. None of those has yet been shown to close the gap.

This post explains the power and permitting problem as of 19 October 2026, using official figures from Ireland, the UK and the European Commission. Figures are labelled by source and date. Where sources disagree, both figures are shown. Nothing here is investment advice or a prediction.

Key numbers at a glance

• 6,969 GWh: electricity used by Irish data centres in 2024, up 10 percent from 6,335 GWh in 2023 (Central Statistics Office, 10 June 2025).
• 22 percent: data centres' share of Ireland's metered electricity in 2024, up from 5 percent in 2015 (CSO, 10 June 2025).
• 12 December 2025: date Ireland's energy regulator, the CRU, published its connection policy for new data centres (CRU, 12 December 2025).
• 9.4 TWh to 14.6 TWh: EirGrid's forecast of Irish data centre demand from 2025 to 2034, which the CRU says would be 31 percent of national demand by 2034 (CRU, 12 December 2025).
• 80 percent: the share of annual demand that large new Irish data centres must meet from Irish renewable electricity within six years of connecting (same summary).
• Over 80: data centres operating in Dublin, according to the same summary.
• 41 GW to 125 GW: UK grid connection requests between November 2024 and June 2025, with an estimated 75 GW attributed to data centres (The Next Web, 9 April 2026, summarising reporting).
• 18 to 24 months versus three to eight years: construction time for a building versus a grid connection (The Next Web, 9 April 2026).
• 7 to 10 years: data centre grid connection lead times in Europe, according to a think tank analysis (Agora Energiewende, 20 April 2026).
• 12 months: the proposed maximum time to decide permits inside an EU data centre acceleration zone (Commission proposal COM(2026) 502, 3 June 2026).
• Under 18 months: the Commission's stated 2030 goal for obtaining all permits to build and run a data centre anywhere in the EU (same proposal, financial statement).
• At least triple: the aim for EU data centre capacity within five to seven years, reaching the needed capacity by 2035 (same proposal).
• 230 MW: planned first-stage capacity of Stargate Norway at Narvik, with 290 MW further ambition (Nscale, 31 July 2025).
• Over 500 MW: on-site power generation planned for the Lanarkshire AI Growth Zone within four years (UK government, 29 January 2026).

First, the basics

A data centre is a building full of computers. A modern AI data centre packs so many chips into a hall that its electricity use is measured in megawatts (MW, millions of watts), with the largest planned sites in the hundreds. A gigawatt (GW) is a thousand megawatts, roughly the output of a large power station.

To get that power, a site needs a connection to the grid, the high-voltage network that carries electricity. Network operators handle requests in a grid connection queue. A new large customer joins the queue, and the operator must check whether the network has room or needs reinforcing, which can mean new substations and lines that take years to build.

A permit is a separate matter. Planning permission, environmental assessment and building approval come from public authorities. A project can have a permit and no grid connection, or the reverse. The problem is that each runs on its own clock.

One more term: a PPA, or power purchase agreement, is a long contract to buy electricity from a named generator at an agreed price. It gives price certainty, but it does not deliver electrons to the site. The grid still has to carry them.

Ireland: the clearest case study

Ireland shows what happens when data centres grow faster than the system around them. The Central Statistics Office measured data centre use at 6,969 gigawatt hours in 2024, up 10 percent from 2023, while other users rose 3 percent. Data centres took 22 percent of metered electricity, up from 5 percent in 2015. Urban households accounted for 18 percent and rural households 10 percent. Total consumption was 31,903 GWh, up 30 percent since 2015. The CSO's quarterly figures show data centre use rising from 290 GWh in the first quarter of 2015 to 1,829 GWh in the fourth quarter of 2024.

The regulator's response is the decision paper published 12 December 2025, as summarised by A&L Goodbody. It applies only to data centres. Key terms:

• A de minimis threshold of 1 MVA of maximum import capacity. MVA is megavolt-amperes, a measure of electrical capacity close to megawatts. Sites below that threshold are exempt from most provisions.
• For sites from 1 MVA up to 10 MVA: an on-site generating unit covering 100 percent of the import capacity, on a de-rated basis, taking part in the wholesale electricity market.
• For sites of 10 MVA and above: dispatchable on-site or nearby generation or storage covering 100 percent of the import capacity, separately connected and metered, taking part in the wholesale market. Dispatchable means it can be switched on when the grid needs it.
• At least 80 percent of annual energy demand must come from renewable electricity generated in Ireland, within six years of the site being energised.
• Case-by-case assessment by the grid operators. A connection may be refused in a constrained area, even for small sites.

The summary adds that a challenge by an environmental group focuses on the 20 percent allowance for fossil fuel generation on site, and that it had reached only a preliminary stage. It also reports the grid operators were due by 31 March 2026 to publish a connection process for data centre applicants, and that as of 15 April 2026 it had not appeared. Its status after that date is not confirmed here.

The regulator's own announcement of 12 December 2025 adds context the law firm summary does not. It says renewable projects already supported under Ireland's state schemes (REFIT, RESS and ORESS) cannot count towards the 80 percent, so the renewable supply must be additional. It cites EirGrid's forecast that data centre demand will rise from 9.4 TWh in 2025 to 14.6 TWh in 2034, which it says would double 2023 demand and take data centres to 31 percent of national demand by 2034. That is a forecast, not a measurement. The CRU also tells the grid operators to assess each application by whether its location is constrained, and to publish grid capacity information regularly. And it says the sector's medium to long term development needs a state-led approach with spatial planning, development targets and plan-led infrastructure, which the regulator alone cannot supply.

The policy shift is the point. Ireland moved from asking how to supply data centres to asking data centres to bring supply with them.

The UK: a queue that grew faster than a plan

The UK's problem shows up in queue numbers. The Next Web, summarising reporting in April 2026, said connection requests rose from 41 GW in November 2024 to 125 GW by June 2025, with an estimated 75 GW attributed to data centres. The article does not cite a system operator publication for it, so treat it as a second-hand figure of the right order.

The government's answer is the AI Growth Zone. Its November 2025 release for North Wales says growth zones across Great Britain get priority grid connection, planning approvals in England are to be cut from years to months, data centres in suitable areas may get significant electricity bill discounts, and developers may be supported to build their own high-voltage lines and substations. The UK Compute Roadmap sets a stated need of 6 GW of AI-capable capacity by 2030.

Two limits show up in the sources. First, priority for some sites means a longer wait for everyone else, and no published figure measures that. Second, price: OpenAI paused Stargate UK in April 2026, with The Next Web reporting it cited high industrial electricity costs and copyright regulation, and comparing UK prices at more than four times those in the US, Finland, Norway and Sweden. A separate Next Web article puts it at roughly four times. The paused project was to use 8,000 Nvidia GPUs, scaling to 31,000.

The Lanarkshire zone takes the bring-your-own-power route. The government's 29 January 2026 release says DataVita plans more than 500 MW of on-site power generation within four years, from on-site renewables. Ireland's rule and Scotland's plan point the same way: generation next to the load.

Nuclear is a longer horizon. The North Wales release says Wylfa will host the UK's first small modular reactor project, with power to the grid targeted for the mid-2030s.

The EU: the Cloud and AI Development Act

The Commission proposed the Cloud and AI Development Act on 3 June 2026 (COM(2026) 502). Its aim is to triple EU data centre capacity in five to seven years, and the proposal says the "growing gap in data centre capacity" is forcing European firms to route critical workloads through foreign providers.

On permits, the proposal does four things:

• Member states would designate data centre acceleration zones.
• For each zone they would issue an aggregated baseline permit covering the permits and authorisations needed, excluding installation-specific permits and, according to the recital, excluding grid connection permits.
• Environmental assessments and planning procedures would be done once at zone level, before the baseline permit is issued.
• The permit procedure inside a zone would not exceed 12 months from a comprehensive application. Where national law has a status of highest national significance, data centre projects would receive it, but states would not be obliged to create that status.

On power, the proposal pairs with a separate European Grids Package, announced in December 2025. Part of that package is a Commission guidance document on efficient and timely grid connections (C/2025/6703). According to a Linklaters analysis of 8 July 2026, it suggests network operators allocate capacity on a "first ready, first served" or milestone-based basis, and it considers prioritising some user groups on economic criteria and policy objectives, including data centre deployment. It is guidance, and the details are left to member states. It says that package sets out ways to accelerate connections, including organising the queue by a project's readiness and grid-friendly use rather than first come, first served. For each zone, states should analyse current and future energy needs and feed that into national grid planning. The proposal promotes PPAs and flexible connection agreements, which let a site connect sooner in return for accepting limits at busy times. Strategic data centre projects would be selected partly by whether they help grid stability, especially by colocating large clean generation and storage.

The proposal sets measurable goals. In its financial statement, it says by 2030 the EU should at least triple its current capacity and operators should obtain all permits in under 18 months, including access to land, energy and connectivity. Listed indicators include average permitting time and the share of projects delayed or cancelled because of regulatory or infrastructure barriers. A proposal is not law: ITdaily, on 9 June 2026, said negotiations with Parliament and Council were only starting and that it is unclear where major investment will come from.

A wrinkle: the proposal text states the tripling as five to seven years with the needed capacity by 2035, and the financial statement states 2030. They appear in the same document, so both are shown here.

The gigafactories meet the grid

The EU's gigafactory call does not state a power requirement. It mentions energy-efficient data centres only. A site holding over 100,000 advanced processors would, by the Stargate Norway comparison (230 MW planned for 100,000 Nvidia GPUs), be a very large electrical load. Nscale describes the Narvik site as running primarily on hydropower, in a region with low local demand and power prices below the European average. Few European locations offer that combination, which is one reason why hydropower-rich Nordic sites appear so often.

Mistral's site under construction in Sweden, reported by Euronews, fits the same pattern, though Euronews gives no power figure for it.

Flexibility: a fifth lever under study

Some analysts argue the quickest gain is to make data centres flexible users. Agora Energiewende, an energy think tank, published an analysis on 20 April 2026 covering 11 European countries. It put data centre grid connection lead times at 7 to 10 years, longer than the three to eight years in the UK reporting above; the two figures come from different sources and regions, so both are shown. It also noted that Dublin and Amsterdam have enacted moratoriums on new data centre connections.

Its modelling found that if data centres ran flexibly for 120 hours a year, about 4 GW of extra peak capacity could be avoided, and that flexibility could cut data centres' contribution to peak demand by up to 45 percent in 2035. It estimated that mandated flexibility would save about 500 million euros a year across the 11 countries. These are model results from one organisation, not observed outcomes. They matter because the Commission proposal also promotes flexible connection agreements, which trade a faster connection for limits at busy times.

Four levers, and what each really fixes

• Faster permits fix paperwork time. They do not create grid capacity. The EU proposal's baseline permit excludes grid connection permits.
• Queue reform, such as ranking by readiness, moves ready projects ahead of speculative ones. It does not add network capacity either, but it reduces wasted places in the queue.
• Price support, such as the UK's possible bill discounts, addresses running cost. It does not shorten construction time.
• Bring-your-own-power rules, as in Ireland and Lanarkshire, reduce strain on the shared grid. They shift cost and permitting onto the developer, and on-site fossil generation is already under legal challenge in Ireland.

Each lever solves one clock out of several, which is why the gap between 18 to 24 months and three to eight years has not yet been shown to close.

What is firm and what is uncertain

Firm:

• The CSO figures, which come from official meter data.
• The text of the Commission proposal, including the 12 month permit limit inside zones.
• The UK government's stated benefits for growth zones.

Uncertain:

• Underlying UK queue figures, which are second-hand.
• Whether Irish grid operators have since published their data centre connection process.
• Whether the EU permitting goals survive negotiation.
• Whether on-site generation can be built in the time projects need.
• Whether electricity prices fall enough to restart paused projects.

What to watch next

• Parliament and Council positions on acceleration zones and the 12 month limit.
• The outcome of the Irish legal challenge and publication of the grid operators' data centre process.
• The UK's decisions on queue reform and price support.
• The first power figures from selected EU gigafactory bids, after the 12 November 2026 deadline.
• Any figures from the European Grids Package on queue reform.

What this means for software teams

Power constraints mean capacity arrives late and unevenly, so plan for regional shortages and price swings in cloud capacity, and keep workloads portable. Whatever you run, know what is in it; Safeguard's SBOM and dependency scanning, with a free scan at https://gold.safeguard.sh/scan, is one way to keep that inventory.

Related: the Europe overview, the EU AI Gigafactories call explained, the UK growth zones explained, and OpenAI's compute commitments and Stargate.

Quick check

Sources

• Central Statistics Office, Data Centres Metered Electricity Consumption 2024, 10 June 2025: https://www.cso.ie/en/releasesandpublications/ep/p-dcmec/datacentresmeteredelectricityconsumption2024/keyfindings
• CRU, decision on new electricity connection policy for data centres, 12 December 2025: https://www.cru.ie/about-us/news/the-cru-publishes-its-decision-on-new-electricity-connection-policy-for-data-centres/
• Linklaters, Powered land: power policy, delivery and value, 8 July 2026: https://linklaters.com/en/insights/thought-leadership/powered-land/powered-land-power-policy-delivery-and-value
• Agora Energiewende, data centre flexibility and Europe's grid bottleneck, 20 April 2026: https://www.agora-energiewende.org/news-events/how-data-centre-flexibility-can-help-solve-europes-grid-bottleneck
• A&L Goodbody, on the CRU decision of 12 December 2025: https://www.algoodbody.com/insights-publications/data-centres-and-the-grid-how-recent-irish-policy-will-shape-the-sectordata-centres-and-the-grid-how-recent-irish-policy-will-shape-the-sector
• European Commission, Cloud and AI Development Act proposal COM(2026) 502, 3 June 2026 (Eerste Kamer copy): https://www.eerstekamer.nl/nonav/bijlage/20260609/com_2026_502_proposal_for_a/document3/f=/vmy8optarooc.pdf
• European Parliament Legislative Observatory, Cloud and AI Development Act: https://oeil.europarl.europa.eu/oeil/en/document-summary?id=1903654
• ITdaily, 9 June 2026: https://itdaily.com/blogs/cloud/eu-aims-to-triple-data-center-capacity-by-2033-but-is-the-plan-enough/
• The Next Web, OpenAI pauses Stargate UK, 9 April 2026: https://thenextweb.com/news/openai-pauses-stargate-uk-energy-costs-regulation
• The Next Web, summary of Guardian reporting, July 2026: https://thenextweb.com/news/openai-apparently-never-visited-the-site-of-its-flagship-uk-ai-project
• UK government, North Wales AI Growth Zone, 13 November 2025: https://www.gov.uk/government/news/ai-growth-zones-to-create-thousands-of-jobs-and-unlock-up-to-100-billion-in-investment-as-new-site-confirmed-for-north-wales
• UK government, Lanarkshire AI Growth Zone, 29 January 2026: https://www.gov.uk/government/news/more-than-3400-jobs-and-targeted-support-for-local-communities-to-help-tackle-the-cost-of-living-as-lanarkshire-named-latest-ai-growth-zone
• UK government, UK Compute Roadmap: https://www.gov.uk/government/publications/uk-compute-roadmap/uk-compute-roadmap
• Nscale, Stargate Norway, 31 July 2025: https://nscale.com/press-releases/stargate-norway-nscale-aker-openai
• Euronews, Mistral Series D, 8 September 2026: https://www.euronews.com/2026/09/08/mistral-ai-raises-record-3-billion-in-samsung-led-funding-round
• EuroHPC Joint Undertaking, AI Gigafactories call, 30 July 2026: https://eurohpc-ju.europa.eu/eurohpc-joint-undertaking-launches-ai-gigafactories-call-2026-07-30_en

Last reviewed: 19 October 2026.