The UK’s electricity grid is at a crossroads, facing its most significant overhaul in decades. With electricity demand at record highs and a government target to deliver 95% clean power by 2030, the scale of change is immense. At the heart of this transformation is a grid queue that had previously swollen to 700 GW prior to the NESO Connections Reform Results in December 2025 far outstripping current capacity and highlighting both ambition and challenge. Ofgem and the new National Energy System Operator (NESO) are spearheading reforms to unlock progress and modernise the system.
These reforms aim to break through grid bottlenecks, speed up new connections, and restore confidence among developers, investors, and communities. As the UK accelerates towards net zero, the backbone of our energy sector is under strain: the grid queue includes hundreds of so-called “zombie projects” with no clear pathway, and the pace of renewable deployment, especially solar, outpaces our ability to connect new sites. Grid reform is now urgent, poised to define the energy landscape for generations.
We spoke with Senior Surveyor, Henry Mawhood, in our green energy and sustainability team, to discuss the core challenges driving grid reform and the major opportunities emerging as the UK rewires its energy future.
Having spent years navigating renewable energy projects, I have seen first-hand how grid constraints stifle innovation and investment. The current grid queue with many projects still awaiting connection and lead times stretching up to a decade, is not fit for purpose. A lack of transparency and clarity leaves developers and investors in limbo. Reform must confront both technical and commercial realities, building confidence among all stakeholders.
Challenges necessitating reform
A surge in applications for grid connections, from large-scale solar farms to community rooftop projects, has created a backlog. Many sites are stalled due to insufficient capacity or unclear timelines. This bottleneck threatens progress towards clean energy and risks undermining investor confidence at a pivotal moment. Planning delays, supply chain shortages (notably in transformers and cabling), and policy uncertainty compound these issues, making it difficult for even well-prepared projects to move forward.
Key changes and their impact
The government’s grid reform programme, led by Ofgem and NESO, is a decisive move. By restructuring the grid queue, prioritising projects that are genuinely ready to proceed and removing “zombie” applications, the reforms promise to unlock stalled investments and bring clarity for developers. Addressing regional disparities is crucial: reforms must ensure growth is not confined to a few areas, but spread nationwide, enabling solar, wind, and emerging technologies to flourish across the UK.
Sector challenges: Planning, supply chain, and investor uncertainty
Grid constraints are only part of the picture. Persistent planning delays can derail even the most promising projects. Supply chain disruptions, especially shortages of critical equipment, add further complexity. For investors, uncertainty around connection timelines and returns remains a significant barrier. Overcoming these challenges will require coordinated action from government, industry, and local authorities, alongside reforms that foster transparency and predictability.
Opportunities: Solar, rooftop, regional, and emerging segments
Despite these hurdles, the opportunities for renewables are unprecedented. Grid reform will unlock investment in utility-scale solar and drive a rooftop revolution, opening headroom in regions previously overlooked. Battery storage and flexible technologies are expanding rapidly, while new segments, such as solar installations in car parks, agrivoltaics, and floating solar, offer further diversification. The pathway to 95% clean electricity by 2030 is ambitious, but achievable with bold action and collaboration.
Key takeaways - Focus for developers and investors
- Engage early with grid operators and local authorities to secure connections and address planning risks.
- Prioritise projects with clear timelines and robust supply chains to mitigate delays.
- Explore regional and rooftop opportunities, leveraging new technologies and emerging segments, such as car park solar, to maximise value.
- Advocate for transparent and equitable grid reform, ensuring the sector’s voice is heard in policy debates.
The coming decade will be defined by how effectively we modernise and reform the grid. With the right policies and industry collaboration, the UK stands to unlock a generational opportunity for renewable energy, driving economic growth, energy security, and environmental stewardship. Looking ahead to 2035, there is every reason for optimism: decisive action today will lay the foundations for a future-ready energy system, capable of delivering on our net zero ambitions.
Find out more about connections reforms results