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    National Grid Electricity Transmission Partnership: delivery and OHL risks for engineers

    June 27, 2026|

    Reviewed by Joe Ashwell

    National Grid Electricity Transmission Partnership: delivery and OHL risks for engineers

    First reported on New Civil Engineer

    30 Second Briefing

    Balfour Beatty, M Group, Morgan Sindall Infrastructure, Murphy and Omexom Taylor Woodrow have secured a £1.2bn National Grid Electricity Transmission Partnership phase focused on increasing overhead line capacity across the UK network. The framework will centre on new and uprated OHL assets, including tower upgrades and conductor replacement, to move more power from new generation hubs into demand centres. Contractors will need to manage live-grid interfaces, constrained wayleaves and foundation works around existing steel lattice towers, with programme delivery likely to drive demand for specialist OHL plant and experienced lines crews.

    Technical Brief

    • Delivery partners span Balfour Beatty, M Group, Morgan Sindall Infrastructure, Murphy and Omexom Taylor Woodrow, enabling multi-region resourcing.

    Our Take

    The £1.2bn Electricity Transmission Partnership work sits alongside National Grid’s separate Mannington–Nursling reconductoring scheme with Balfour Beatty, signalling a build-up of repeat high-voltage line upgrade packages that favour contractors already embedded in 275–400kV work.

    Balfour Beatty’s recent restructuring into a dedicated power division, noted elsewhere in our infrastructure coverage, positions it to treat this ETP phase as part of a longer pipeline of grid-strengthening projects rather than a one-off framework win.

    With ETP and the Great Grid Partnership both appearing in recent National Grid items, the appointment of a multi-firm line-up (Balfour Beatty, M Group, Morgan Sindall Infrastructure, Murphy and OTW/Omexom Taylor Woodrow) suggests future UK transmission work is likely to be parcelled into alliance-style packages rather than single-prime EPC contracts.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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