Smarter siting for a strained system: Factors shaping the UK’s energy sector in 2026

Infrastructure demand across the UK is set to intensify in 2026, with rapid growth in data centres, ageing assets approaching the end of their life, and the need to build climate-resilient networks converging at pace, underlining that energy infrastructure no longer operates in isolation.

The question facing decision-makers is not just what needs to be built or upgraded, but where that investment should go to deliver sustainable and resilient outcomes. Funding constraints mean that organisations must also balance long-term needs with short-term pressures, driving tougher, more tailored scrutiny on how funding is allocated.

Choices around land, capacity and resilience have system-wide consequences, making location an urgent guiding principle for planning in the year ahead. Nowhere is this interdependency more visible than in the rapid growth of digital infrastructure as the UK seeks to be the next global AI and data-processing hub.

The data centre surge: A new scale of demand

One of the most striking developments this year has been the rise of data centres. Connecting a new site isn’t just about plugging it in; these facilities require major investment in local substations, cabling and grid reinforcement. Their scale means that poor siting choices can overburden local grids, water networks and transport systems with drastic impacts on nearby housing, transport links and public services.

It’s not as simple as selecting unused land. Many proposed sites sit on industrial or brownfield land close to water sources, but planners must first consider whether that water source has the quality and capacity to cool an energy-intensive hub. Does it require treatment or recycling, and what might this mean in terms of cost or ecological impact?

Past land use must also be considered. Can surrounding infrastructures like roads, substations and sewers support a high-demand facility? Where will the skilled workforce come from, and how will they get there? Without answers to these questions, a real risk emerges where growth outpaces surrounding systems’ capacity to support a site sustainably.

For these reasons, the sector is increasingly relying on geospatial data to assess whether communities, transport links and environmental conditions can support future expansion without destabilising local systems. It enables planners and utilities to overlay social considerations with environmental suitability, infrastructural capacity and long-term viability before development begins. Without this evidence, data centres risk becoming more destructive than developmental. 

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Ageing infrastructure: The shift toward local energy

Alongside new development, national attention must turn to the UK’s ageing infrastructure. Many core assets were built decades ago and are now nearing the end of their design life. Assets like pylons, substations and underground cables therefore require increased inspection, maintenance and replacement to ensure they can continue supporting rising demand and the digitalisation that data centres are founded on.

As such, in the year ahead, we can expect a rise in proactive asset management and the modernisation of legacy systems - both to maintain network stability and to support the shift toward more distributed, localised forms of energy.

This shift is becoming increasingly important as the further electricity travels, the more is lost in transmission. UK networks currently lose around 6 to8% each year, with research suggesting that smarter planning and technology could reduce these losses by up to two-thirds. This represents enough energy to power around a million homes annually or cut household bills by roughly 5%.

As a result, localised infrastructure is becoming a defining trend in how the UK sources, stores and consumes energy. Inspired by European models of community-led planning, local authorities are exploring neighbourhood-scale generation, microgrids and shared storage as ways to reduce costs and strengthen security of supply. These systems allow demand to be matched more closely with local generation, underpinned by data that can show where consumption peaks occur, how they shift over time and which areas offer the strongest opportunities for efficiency improvements.

When energy travels shorter distances, localised networks ease pressure on national transmission lines and offer greater resilience during disruption or high demand.

Beneath the surface: Hidden networks that shape delivery

While mapping features above ground is well established, the UK also relies on more than 4 million kilometres of buried pipes and cables. These hidden assets shape where and what can be connected to the grid, and decisions around upgrading or redirecting networks increasingly depend on accurate underground data to accelerate delivery and minimise disruption.

This is why wider adoption of the National Underground Asset Register (NUAR) - now operated by Ordnance Survey - is expected to reshape infrastructure delivery in 2026. Historically, organisations relied on paper maps and fragmented information from multiple utilities providers, making maintenance, installation and repair slow and complex. NUAR consolidates these datasets into a single digital map, helping reduce accidental strikes and improving certainty during early planning stages, where underground complexity often causes delays or added costs.

NUAR illustrates how geospatial intelligence is beginning to change the way infrastructure is planned, delivered and safeguarded - a shift that becomes even more significant when considering the mounting pressures of climate change and the accelerating transition to renewable energy.

Renewables and net zero: Planning for system resilience

Integrating renewable generation into networks designed for centralised energy remains a major challenge. Balancing decentralised supply with network stability, fair pricing and climate pressures is becoming one of the defining issues shaping the sector.

Data centres can present an unexpected opportunity here. Spatial analysis can identify where waste heat from facilities could be reused to warm neighbouring homes or buildings, supporting circular energy initiatives, improving local energy efficiency, and allowing upgrades and connections to be sequenced more efficiently and with fewer downstream constraints.

At the same time, net zero commitments are reshaping investment decisions across the energy sector. Achieving these goals requires significant new infrastructure and clearer strategic decisions about what is built where. Renewables deliver the greatest benefit when generation and demand are closely aligned, and energy-intensive developments such as data centres are increasingly being assessed on their access to clean, local power to minimise avoidable transmission losses.

The push toward net zero is also driving more coordinated regional and national planning. Data and evidence-led approaches are helping identify where combined investment across energy, transport and housing could accelerate decarbonisation more effectively than isolated initiatives. 

These pressures reinforce the need for planning frameworks that support long-term system resilience and ensure that infrastructure development aligns with the UK’s climate commitments.

Building smarter: Why siting decisions will matter most

As pressure builds across energy, water and utilities networks, the opportunities ahead are substantial - but so are the risks of poor decision-making. With rising demand, ageing assets and new forms of generation coming online, the sector is operating under growing strain.

The next phase of UK infrastructure delivery will depend on combining spatial insight with operational intelligence, creating a planning environment where decisions anticipate system behaviour rather than react to its failures. In a system this stretched, smarter siting becomes the factor that links every challenge - determining where data centres can be supported, which assets require priority investment, and how localised energy, underground networks and renewables can be integrated without destabilising the wider grid.

Ultimately, the factors shaping the UK’s energy sector in 2026 all point to the same conclusion: siting decisions will define the system’s ability to grow, decarbonise and withstand future pressures. Trusted location data is the foundation for these decisions - without it, infrastructure planning risks being fragmented rather than resilient and futureproof.