海角视频

Across the UK, local authorities and developers are grappling with a new reality. Digital demand is accelerating at a pace that outstrips the systems designed to support it. Cloud computing, AI, high performance computing and the rise of hyperscale operators are transforming the role that data centres play in modern economies.

Yet as this demand grows, the central challenge becomes clear. Energy is now primarily the make-or-break factor in determining whether regions can attract, enable and sustain new data centre investment.

Modern data centres are already exerting a noticeable pull on national power systems. In the UK, Oxford Economics estimates that data centres consumed around five terawatt hours (TWh) of electricity in 2023, equivalent to roughly 2% of total national electricity demand and about 7% of all commercial electricity use. Their analysis suggests this could rise more than fivefold to about 26 TWh by 2030, at which point data centres alone would account for close to 9% of projected UK electricity demand and around 30% of commercial consumption. Put in more tangible terms, today鈥檚 UK data centre load is already comparable to the annual electricity use of nearly two million typical British homes, with that figure set to increase sharply over the rest of this decade.[1]

This pattern is mirrored internationally, underscoring that the UK is part of a wider structural shift. The US Department of Energy notes that data centres are among the most energy鈥慽ntensive building types, typically consuming 10 to 50 times more electricity per unit of floor area than standard commercial offices, and already accounting for around 2% of total US electricity use. Recent analysis of the US market indicates that data centre electricity consumption has risen to roughly 176 TWh, or about 4鈥�4.5% of national demand, with projections that this could climb to between 325 and 580 TWh by the late 2020s as AI workloads expand. At a global level, the International Energy Agency and others warn that aggregate data centre electricity demand could feasibly double between 2022 and 2026, driven by AI鈥慹nabled services that are far more energy鈥慽ntensive than earlier, primarily storage鈥慴ased applications.[2]

海角视频鈥檚 work across London, major UK cities and regional authorities shows that the pressure on energy networks is reshaping the geography of digital development. For local authorities, planners and operators, the scale of demand is unprecedented and poses a significant challenge that requires a systematic solution. 

A step change in energy need

In the space of a decade, data centres have grown from relatively modest consumers of power into facilities drawing loads comparable to small towns. The shift to AI and dense computational workloads is amplifying this trend. The UK government鈥檚 AI growth agenda aims to rapidly scale national AI capabilities and attract frontier AI investment through measures such as AI Growth Zones, which in turn is likely to concentrate and accelerate data centre electricity demand in key regions as ever-larger, energy鈥慽ntensive facilities are brought online.

The AI Growth Zones are designed to spread the investment across the country beyond the capital, but nevertheless there is an increasingly uneven geographic pressure, with high demand clustering in locations already constrained by competing uses. This creates a structural challenge for local authorities, who are being asked to manage what is effectively a national鈥憇cale infrastructure problem through local planning decisions, requiring new capabilities, deeper coordination with utilities and central government, and access to specialist technical expertise across energy, digital and spatial systems.

Alongside these AI Growth Zones, operators are also defining availability zones of their own, creating clusters of geographically separated yet tightly interconnected data centre sites that provide the resilience, redundancy and low鈥憀atency performance required for large鈥憇cale AI workloads.

Since November 2025, data centres have been formally identified as 鈥渘ationally significant infrastructure鈥�, meaning the local authorities’ powers in these cases have become more limited.

In west London, for example, strong fibre corridors and in central and east London proximity to financial services have historically anchored significant data centre growth. But these same areas face some of the most severe grid restrictions in the UK.

Andrew Commin, an associate in the 海角视频 Cities Energy team, says: 鈥淲est London is an area of massive grid constraints 鈥� the National Grid is installing a new substation purely to serve the data centre growth in west London and Slough. But equally, the big American investors behind these developments also want to be within easy reach of Heathrow airport.鈥�

Such trade-offs mean there is a widening disconnect between where the market wants to build and where the infrastructure can support it.

The limits of the existing grid

The grid constraint is not simply one of capacity. It is also about visibility and sequencing. Local authorities often encounter planning applications long after operators have entered the queue for grid connections, leaving little time to align development, infrastructure investment and place priorities.

System costs and planning delays shape the behaviour of operators. In some cases, if grid connections cannot be secured within five years, developments are abandoned. This limits the ability of local authorities to plan confidently and reduces the certainty that investors need. Our integrated multidisciplinary approach to these challenges can help to deliver a framework to tackle such challenges.

The energy pressures do not simply affect new developments. They influence the wider regional economy, net zero pathways and the ability to decarbonise local systems. As Andrew explains, where large energy loads are absorbed by data centres, there is a risk of undermining broader decarbonisation ambitions. In London, 鈥渋t could limit how much electricity capacity there is available for the decarbonisation of the broader energy system, because the data centres will be potentially taking it all.鈥�  

The stakes are high: without an integrated, system鈥憌ide approach, authorities will be forced into increasingly difficult trade鈥憃ffs – for example, prioritising data centre connections over electrifying homes and transport, accepting higher local emissions or noise to secure investment, or allocating scarce industrial land to digital infrastructure at the expense of housing, logistics and other community needs.

There are also emerging behavioural responses from operators. Some are pursuing alternative fuels or independent generation routes to bypass delays. Gas turbine connections are one example. Others in the industry are even looking at dedicated small modular nuclear reactors. Taken together, these responses underline that, unless energy planning for data centres is addressed at a whole鈥憇ystems level, market workarounds will proliferate in ways that can increase carbon emissions, complicate regulation and undermine wider regional decarbonisation and air鈥憅uality goals.

As Andrew observes, gas network operators have moved from having no data centre enquiries to regularly receiving interest, because operators would have to wait so long for an electrical connection. In some cases, developers are considering facilities that would run almost entirely on gas-fired power. This is efficient from an operational standpoint but raises serious air quality and carbon implications. For local authorities, this risks locking in higher on鈥憇ite fossil fuel use at precisely the moment when statutory net zero targets and local air quality duties are tightening, particularly in urban areas. Authorities that consent gas鈥慼eavy schemes without a wider system plan may find themselves under pressure later to retrofit stricter emissions controls, reconcile higher local pollution with Air Quality Action Plans, or explain why short鈥憈erm capacity fixes have made it harder to meet medium鈥憈erm decarbonisation commitments. 

Location decisions

Although energy remains the dominant constraint, it interacts closely with factors such as fibre access, land availability and data sovereignty. The UK benefits from a relatively low carbon grid and strong fibre routes that continue to make it attractive to global operators. Yet the competition is intensifying. Frankfurt, for instance, is seeing significant growth, and the availability of land and lower grid pressures in some European regions is beginning to reposition parts of the market.

Demand patterns are also changing. While London has long acted as the main UK hub, Andrew points to variations in uptake across regions. Newcastle, for example, has large-scale facilities sitting under capacity because, as he notes, 鈥渢hey are not taking up the capacity in the same way they are in London鈥�. This is a troubling fact for regional leaders in the North East to consider and underscores the risk of assuming uniform growth across the country.

Although the challenges are significant, they also offer clear opportunities for forward-thinking authorities. These range from using strategic energy and land planning to shape where and how data centres come forward, to securing wider public benefits such as grid upgrades, heat recovery for local homes and businesses, and long鈥憈erm alignment with regional net zero and economic development goals. Capturing and reusing waste heat from data centres is already shaping major strategic projects in London, where heat exported from new data centres will contribute to district heating networks.

Perhaps the most important message for local authorities and developers is that effective planning for data centre growth requires a coordinated, evidence-led and strategic view of energy systems. 海角视频鈥檚 work on local and sub-regional local area energy plans shows the benefits of this approach. Our multidisciplinary combination of strategic and technical insight enables clients to anticipate future demand, model scenarios to 2050 and align growth with net zero objectives.

A critical moment for the UK

The rise in digital demand is not slowing. From financial services to AI, public services to global commerce, the UK鈥檚 economy relies increasingly on secure, high-capacity digital infrastructure. The challenge is not whether data centres will be built, but where and how. Without a coordinated system-wide approach, the energy constraints facing many regions threaten to slow growth, limit resilience and increase tensions between competing priorities. Inaction could deter vital investment in regions outside of London, which are desperate for revitalisation and long-term drivers of growth and prosperity.

This makes it essential for authorities and operators to work with partners capable of navigating the complexity. The UK鈥檚 digital future depends on making energy a central part of planning, not a downstream complication. By taking an integrated approach, regions 鈥� especially those seeking growth outside the capital 鈥� can build the confidence, clarity and capacity needed to unlock sustainable digital growth and ensure that data centres enhance, rather than constrain, long term economic opportunity. 

This article is part two of a series. Read part three here: How water constraints can define the next phase of data centre growth

Get in touch with Yalena Coleman, who is leading on data centre advisory for 海角视频, to continue the conversation

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[1] https://www.oxfordeconomics.com/resource/the-uks-data-centre-boom-growth-trends-drivers-and-the-rising-power-challenge/

[2] https://eta-publications.lbl.gov/sites/default/files/2024-12/lbnl-2024-united-states-data-center-energy-usage-report_1.pdf

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