Grid connection reform couldn’t come at a better time. The UK has set bold, legally binding climate targets to cut greenhouse gas emissions and shift to a decarbonised energy system. Central to this effort is the commitment to reach net zero emissions by 2050. The UK has also pledged to reduce emissions by 68% by 2030 and 81% by 2035, compared to 1990 levels. With the renewable capacity ready to drive this transition, the challenge isn’t about technology or ambition, it’s about whether we can connect these projects to the grid fast enough to meet our goals.
Right now, the answer is no.
An outdated and overloaded electricity grid has left projects capable of delivering affordable, renewable power waiting until 2033 or later to connect. The grid urgently needs reforms to the connection process. Without them, the UK’s Net Zero goals will remain out of reach.
A System Straining Under Demand
The UK’s electricity grid was designed for a very different energy system, one built around a small number of large, fossil-fuelled power stations. In contrast, today’s energy landscape consists of thousands of distributed renewable generation sites, often located in remote or rural areas. Unlike centrally located fossil fuel plants that feed power into the grid in predictable ways, these renewables require long transmission lines and more complex balancing of supply and demand. This shift has created grid bottlenecks and rising levels of curtailment, where clean energy is wasted because the grid can’t transport it to where it’s needed. The planning and connection process simply hasn’t kept pace.
In addition to these transmission bottlenecks, as of 2025, over 750 GW of projects are waiting for a grid connection, more than five times the capacity needed to deliver the government’s Clean Power 2030 target.
Many projects have already secured land, planning permission, equipment, and finance. But without a confirmed grid connection, construction can’t begin. Long delays risk voiding contracts and raising costs, especially for technologies tied to volatile global supply chains, making investment in clean power less attractive.
Around 40% of the queue consists of inactive or speculative “zombie projects” that block space without realistic paths to delivery. Viable developments sit idle while the country misses out on clean power, green jobs, and energy security.
What Grid Connection Reform Involves
This year we are due to see a major policy shift. Ofgem has approved a suite of reforms that overhaul how projects are assessed and connected to the grid. These changes are being implemented by the National Energy System Operator (NESO) and the transmission and distribution networks.
From ‘first-come’ to ‘first-ready’
To manage the grid connection queue, the connection process is moving from a “first-come, first-served” queue to a “first-ready, first-connected” model. This means that projects will now be assessed on merit rather than when they submitted an application. To be prioritised, projects must demonstrate:
- Full planning consent
- Secured supply chain contracts
- Committed financial backing
This approach will cut out speculative developments and gets those ready to deliver connected.
Spatial planning and grid optimisation
To mitigate the transmission problems, NESO is developing a spatial energy plan, identifying zones across the UK best suited for specific technologies.
Strategically siting projects will reduce the need for costly long-distance transmission lines, managing grid bottlenecks and cutting curtailment costs.
Financial signals to discourage speculation
To ensure only serious applicants enter the queue, developers must now pay a Progression Commitment Fee. This disincentivises speculative or underfunded projects, keeping the queue clearer for viable ones.
Signs of Progress
Encouragingly, we’re starting to see results. Since Ofgem’s April 2025 reforms:
- Over 587 GW of zombie projects have been cleared from the transmission queue.
- NESO’s Gate 2 process is fast-tracking projects that can prove delivery readiness cutting years off previous delays.
- Regional capacity zones now better match supply and demand, aligning infrastructure with geography and market need.
Next Steps for the UK Grid
While grid connection reform is a vital step forward, pairing these changes with the deployment of energy storage across different durations will create a flexible, futureproof grid. By storing surplus energy that would otherwise be curtailed, storage systems help reduce waste and maximise the use of clean power.
Crucially, this will take pressure off the transmission network. Instead of relying solely on long-distance power flows, local storage can serve regional demand, helping to balance the system more efficiently.
As the UK transitions to a more decentralised, renewables-led energy system, integrating storage alongside grid connection reform will be key to delivering a resilient, low-carbon electricity network.
The UK’s clean energy ambitions are world-leading. But no amount of renewable generation will make a difference if the energy produced can’t make it to the grid.
The reforms are now underway, and while long overdue are already unlocking momentum.
