Port Talbot Steelworks Electric Arc Furnace is the Top Project in Wales
We’ve curated the Barbour ABI data to bring you the top construction projects within Wales in 2025. This includes the top construction projects by total value across all sectors with a start date 6 months back, and 6 months forward. Please note that we have excluded all masterplans from our league tables.
The latest data for construction projects in Wales shows the Talbot Steelworks Electric Arc Furnace project in first place valued at £1.3bn. Second place is the Ciner Glass Limited Dragon Glass Manufacturing Facility with a value of £350m. In third place is the CWL2 Data Centre Campus valued at £285m.
Top Construction Projects 2025
Regional Tables: United Kingdom | South East | South West | East of England | East Midlands | West Midlands | Northern Ireland | North West | Yorkshire & the Humber | North East | Scotland
City Tables: London | Birmingham | Liverpool | Manchester | Aberdeen | Cardiff | Nottingham | Glasgow |
| Position | Project | Main Sector | Location | Start Date | Project Value | Project ID | View Project |
|---|---|---|---|---|---|---|---|
| 1 | Port Talbot Steelworks – Electric Arc Furnace | Industrial | Neath | Jun-25 | £ 1,250,000,000 | 12819618 | View project |
| 2 | Ciner Glass Limited – Dragon Glass Manufacturing Facility | Industrial | Blaenau Gwent | Jan-26 | £ 350,000,000 | 12599343 | View project |
| 3 | CWL2 Data Centre Campus | Commercial & Retail | Vale of Glamorgan | Mar-26 | £ 285,000,000 | 12727863 | View project |
| 4 | Atlantic Wharf, Cardiff Bay – Music Arena & Travelodge Hotel | Leisure | Cardiff | Jun-25 | £ 250,000,000 | 12032395 | View project |
| 5 | Pembroke Power Station, Pwllcrochan – 350MW Battery Storage System | Utilities | Pembrokeshire | Jan-26 | £ 105,000,000 | 12735148 | View project |
| 6 | Erebus – 100MW Offshore Floating Wind Farm | Power & Utility | Pembrokeshire Coast National Park | Jan-26 | £ 100,000,000 | 12533135 | View project |
| 7 | Channel View Regeneration Project – Phase 1 | Residential | Cardiff | Mar-25 | £ 80,000,000 | 12587665 | View project |
| 8 | Cardiff & Vale College – Advanced Technology Centre | Education | Cardiff | Jul-25 | £ 65,000,000 | 12724863 | View project |
| 9 | St Richard Gwyn Catholic High School | Education | Vale of Glamorgan | Jan-26 | £ 64,000,000 | 12709152 | View project |
| 10 | Atlantic Wharf, 1 East Bay Close- 353 Apartments | Residential | Cardiff | Dec-25 | £ 60,000,000 | 12653793 | View project |
| 11 | The Central Square, Plot 4&5 – 364 Apartments & Commercial Space | Residential | Cardiff | Dec-25 | £ 55,000,000 | 12617945 | View project |
| 12 | Deeside Power Station, Weighbridge Road – 49.9MW Hydrogen Plant | Utilities | Flintshire | Jun-25 | £ 49,900,000 | 12800318 | View project |
| 13 | Plot B, The Airfields – Warehouse | Industrial | Flintshire | Sep-25 | £ 45,849,000 | 12662470 | View project |
| 14 | St Lythans Road – 42MW Parc Worlton Solar Farm | Utilities | Vale of Glamorgan | Mar-26 | £ 42,000,000 | 12658214 | View project |
| 15 | Caerphilly Train Station Redevelopment | Civil Engineering | Caerphilly | Jan-26 | £ 40,000,000 | 12423790 | View project |
| 16 | Central Quay, Phase 1 – Office & Retail Units | Commercial & Retail | Cardiff | Jan-26 | £ 40,000,000 | 12356094 | View project |
| 17 | Caerphilly Leisure Centre | Sports | Caerphilly | Jun-25 | £ 38,000,000 | 12644563 | View project |
| 18 | Clydach Vale ALN School | Education | Rhondda | Mar-25 | £ 37,000,000 | 12829283 | View project |
| 19 | Skyline Swansea, Kilvey Hill – Leisure Park | Leisure | Swansea | Feb-26 | £ 37,000,000 | 12753225 | View project |
| 20 | 22 Newport Road, Adamsdown – Student Flats & Commercial Space | Residential | Cardiff | Dec-25 | £ 35,000,000 | 12288192 | View project |
| 21 | Cardiff & Vale College – Barry Waterfront Campus | Education | Cardiff | Aug-25 | £ 35,000,000 | 12723905 | View project |
| 22 | East Aberthaw – 35 MW Solar Farm | Utilities | Vale of Glamorgan | Jan-26 | £ 35,000,000 | 12623875 | View project |
| 23 | Foel Trawsnant 35MW Wind Farm | Utilities | Neath | Feb-26 | £ 35,000,000 | 12101558 | View project |
| 24 | Pembroke Power Station, Pwllcrochan – Hydrogen Production Facility | Utilities | Pembrokeshire | Jan-26 | £ 33,000,000 | 12801587 | View project |
| 25 | Towyn Road, Pensarn – 128 Houses | Residential | Conwy | Apr-25 | £ 33,000,000 | 12207290 | View project |
| 26 | Coed Ely – Plot C4 Industrial Unit | Industrial | Rhondda | Oct-25 | £ 30,937,000 | 12755737 | View project |
| 27 | Brynrhyd Farm – 30MW Solar Farm | Utilities | Swansea | Mar-25 | £ 30,000,000 | 12627388 | View project |
| 28 | Indurent Park, Llanwern – Industrial Warehouses & Offices (Phase 6) | Industrial | Newport | Feb-26 | £ 30,000,000 | 12826066 | View project |
| 29 | Longcross Court – 706 Bedroom Student Accommodation And Commercial Unit | Residential | Cardiff | Dec-25 | £ 30,000,000 | 12793057 | View project |
| 30 | Morlais Tidal Energy Project (240MW) – Anglesey | Utilities | Anglesey | Jan-26 | £ 30,000,000 | 12352426 | View project |
(Source: Barbour ABI, updated October 2025)
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