For years, UK developers have seen planning permission as the primary obstacle to getting projects moving. But a quiet crisis in the background has now overtaken planning as the industry’s biggest threat: a nationwide shortage of electrical grid capacity. Recent reports reveal that access to power, not land, funding, or planning, has become the defining bottleneck shaping which schemes progress and which grind to a halt. Across the UK, from logistics hubs to housing and data centres, we are seeing our clients finding themselves stuck behind a grid system, unable to meet soaring demand.
Demand Rising Faster Than the Grid Can Cope
New research shows a rapidly widening gap between connection demand and the capacity actually available in the places where development is needed most. Applications for grid connections have surged by 30% between April 2024 and June 2025, pushing the overall queue to 29 GW, equivalent to the energy needed to power around 14.5 million homes.
Although the UK currently has around 39 GW of available capacity at primary substations, this number has barely changed over the last two years, meaning supply is simply not keeping pace with demand. Even more critically, capacity is often available in the wrong places; regions experiencing rapid commercial and residential development frequently have the least grid headroom. Areas such as the Midlands and South West have seen a 14% drop in available capacity due to the rapid growth of logistics and industrial projects, while the key B6 Boundary between Scotland and England has experienced a 23% fall, worsening an already constrained region.
Why Grid Access Is Becoming So Difficult
Electrification
The shift to EV charging, electric heating, and all‑electric buildings is drastically increasing demand at a local level. Substations designed decades ago are now under strain.
Data centres and energy‑intensive facilities
Each gigawatt of capacity can power ten large data centres, meaning just a handful of these projects can absorb available headroom in a region and crowd out housing or commercial developments.
Network reinforcement lead times
Major reinforcement works, such as new substations or upgrades to transmission lines, can take years, making them incompatible with most development timelines.
Speculative and stalled projects are blocking the queue
As of early 2025, more than 739 GW of projects were stuck in the grid connection queue. Reforms proposed by NESO and Ofgem aim to remove speculative applications and prioritise “shovel‑ready” schemes, but these changes are still being implemented.
What This Means for Developers
The implications are clear:
- Early grid feasibility work is now essential, waiting until planning consent is no longer viable.
- Developers must assess power capacity before land acquisition, especially for high‑demand schemes.
- Working with IDNOs and alternative connection providers can reduce costs and unlock capacity that DNOs cannot deliver.
- Accept your POC if you have one already
The UK’s power capacity crunch is no longer an energy sector problem—it’s a property development problem, a planning problem, and increasingly an economic problem. For developers, navigating this bottleneck will be one of the defining challenges of the next decade.
Our team works directly with DNOs, IDNOs, and ICPs to identify realistic connection routes, assess reinforcement requirements, and explore alternative solutions where local capacity is limited. Whether that means securing a more cost‑effective IDNO connection, redesigning load strategies, or uncovering capacity opportunities others have overlooked, we make sure power constraints don’t become project‑defining roadblocks.
