Sizewell C boosts Balfour Beatty order book: delivery and risk notes for engineers
Reviewed by Tom Sullivan

First reported on The Construction Index
30 Second Briefing
Balfour Beatty is projecting a 20% order book increase to about £22bn for 2025, driven by £3bn of work on the Sizewell C nuclear power station within the main contracting team alongside the Bylor JV of Bouygues and Laing O’Rourke. Power generation orders total £3.5bn this year, while other wins include Rolls-Royce’s sole-contractor fissile construction framework and a £162m contract for the Dunard Centre concert hall in Edinburgh. Revenue is expected to rise only around 5% from £10.0bn, but underlying PFO should exceed 2024’s £252m.
Technical Brief
- Balfour Beatty’s order book is forecast to rise from £18.4bn to about £22bn by end‑2025.
- UK Construction and Support Services are expected to deliver higher operational profit than in 2024.
- US Construction margins are projected lower, partially offsetting stronger UK performance.
- The Dunard Centre award in Edinburgh adds a £162m complex-building package to the UK workload.
- Underlying profit from operations in earnings-based businesses is expected to exceed the £252m achieved in 2024.
- Management is targeting continued PFO growth into 2026 while maintaining capital returns via an additional share buyback.
Our Take
The £3 billion Sizewell C work means power generation now accounts for the bulk of the £3.5 billion order inflow in that segment, signalling that Balfour Beatty is locking in long-duration, lower-cyclicality revenue compared with typical UK Construction and Support Services work.
Moving the order book from £18.4 billion to a projected £22 billion by end‑2025, while guiding to only around 5% revenue growth off £10 billion, suggests a growing backlog-to-revenue ratio and increasing visibility into 2026 delivery slots for UK and US infrastructure clients.
Within our 147 Infrastructure stories, very few UK pieces combine nuclear new-build (Sizewell C) with cultural assets like the Dunard Centre in Edinburgh, underlining how Balfour Beatty is straddling both highly engineered, regulated work and civic projects that can showcase complex acoustic and structural design capability.
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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