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What rising grid constraints mean for the UK energy sector
As grid constraints increase across the UK, we look at what this means for developers and energy buyers, and how flexible commercial solutions can help manage risk in a changing energy system.
London, 10 November 2026 – Annual grid constraints are becoming increasingly costly. NESO’s worst-case projection suggests annual costs could reach £7.4bn by 2030, compared with around £1.8bn in 2025. As more renewable generation comes onto the system, the challenge is making sure the grid can move that electricity to where it is needed most. When there isn’t enough network capacity, the result can be greater curtailment, longer connection times and more uncertainty for new projects. Investment in the UK’s electricity network is accelerating, but major upgrades will take time to plan and deliver.
James Clark, Business Development Manager at SmartestEnergy, explains, "Grid reform will take time, but the constraint bill will not wait. Developers, asset owners and energy buyers should focus on what can be controlled now.” The decision to retain national pricing provides greater market certainty. But network charging and connection arrangements, alongside the development of the Strategic Spatial Energy Plan, mean where and when a project connects will continue to matter. Understanding these changes now can help businesses and developers make more informed decisions about what comes next.
That doesn’t mean developers and energy buyers have to wait for the grid to catch up. The right commercial approach can help manage some of that exposure today. Well-structured PPAs can provide greater clarity around balancing, curtailment, shaping and revenue risk, with the flexibility to respond to future market developments. We’ve seen this in practice through our work with OurCoop, where five independent co-operatives came together through a 10-year corporate PPA spanning more than 400 sites. This demonstrates how innovative commercial structures can provide access to long-term renewable energy while helping customers manage complexity
Want to understand what rising grid constraints could mean for the UK energy sector? Read the full article in The Energy Industry Times - TEI Times - Post
