The cost of modernizing Great Britain’s electricity infrastructure through the 2030s has increased significantly, with the National Energy System Operator now projecting expenditures of approximately £89bn compared to an earlier estimate of £58bn. The rise reflects a substantial increase in required investment to support the government’s accelerated clean energy targets and growing electricity demand.
Neso attributed the cost increase to several factors, including alignment with the UK government’s 2030 clean power action plan, an expedited rollout of low-carbon energy projects, and inflationary pressures. The operator stated that despite the higher figure, the investment level remains consistent with its broader strategic recommendations for the energy sector.
The system operator has identified 43 network projects for implementation in the 2030s, with 16 of these projects newly added since the original 2024 forecast. New initiatives include infrastructure to connect Celtic Sea windfarms to multiple points across south Wales and south-west England, alongside modifications to previously recommended projects. These recommendations reflect improvements in project maturity and development by transmission companies.
Energy Minister Michael Shanks characterized the investment as essential to building a future-ready energy system that enhances energy independence and supports economic growth. National Grid’s transmission business head Alice Delahunty stated the company is advancing network upgrades to increase capacity and facilitate economic development while maintaining cost discipline and consumer value.
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