The National Energy System Operator (Neso) has released updated forecasts indicating that rewiring Great Britain’s electricity infrastructure through the 2030s could require approximately £89bn in investment, a substantial increase from the previously projected £58bn figure.
Neso attributed the cost increase to several factors, including alignment with the UK government’s accelerated 2030 clean power action plan, expanded rollout timelines for new low-carbon energy projects, and ongoing inflationary pressures. The organization stated that the revised investment level remained broadly consistent with its foundational recommendations but had evolved to reflect current economic conditions and policy objectives. The updated projections aim to support the government’s targets of doubling onshore wind capacity, tripling solar power generation, and quadrupling offshore wind capacity by the end of the decade.
The system operator has identified 43 network projects for delivery during the 2030s, including 16 options not included in its 2024 forecast. New initiatives encompass plans to connect Celtic Sea windfarms at multiple points across south Wales and south-west England, along with updated versions of previously recommended infrastructure projects. Energy Minister Michael Shanks characterized the investment strategy as essential for building an energy system that safeguards energy independence, maintains bill affordability, and supports economic growth throughout the country.
The Labour government has prioritized clean energy development since winning election, advancing the previous administration’s 2035 zero-carbon power target to 2030. This policy shift has accelerated activity across the energy sector and streamlined project connection processes. National Grid’s transmission business head noted that the company was implementing rapid network upgrades and emphasized the importance of clear signals on future network requirements alongside continued efforts to enhance flexibility and reduce costs for consumers.
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