Infrastructure·Free
UK Grid Connection Queue Analysis
Deep-dive into the ESO transmission connection queue: how AI and data centre applications are reshaping the pipeline and what reform means.
Published 18 Mar 202654 pagesVersion v1.0
Executive summary
What this report covers
The transmission connection queue exceeds 750 GW nationally, with data centre and AI-linked applications now accounting for 12% of new entries. Queue reform will materially reshape which projects survive.
Key findings
Headline conclusions
- Queue exceeds 750 GW nationally as of Q1 2026.
- Data centre applications are up 3.4× year-on-year.
- TMO4+ reforms will strand roughly 40% of current queue positions.
- Zonal pricing debate is the largest single policy risk to siting economics.
Who should read this
Intended audience
- Developers waiting on grid connections
- Policy analysts and government advisors
- ESO stakeholders and DNOs
Table of contents
Inside the 54-page report
- 011. Queue composition and history
- 022. Reform mechanics: TMO4+ and beyond
- 033. AI and data centre applicants
- 044. Regional queue heatmaps
- 055. What developers should do now
Preview
Sample pages
Frequently asked questions
Is this transmission or distribution focused?+
Primarily transmission (ESO). Distribution-level queues are covered in a dedicated appendix.
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