Top 30 Construction Projects in Wales 2027
Last updated: November 2026 | Source: Barbour ABI
The Top Construction Projects Wales League Table shows you exactly where the biggest money is moving across the industry right now in an easy-to-use interactive table. All projects are sourced directly from our leading Construction Project Leads Platform.
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Rover Way, Splott – Energy Park & 90MW Data Centre is Top Construction Project in Wales
According to Barbour ABI’s extensive planning data, the top construction project in Wales is the Rover Way, Splott – Energy Park & 90MW Data Centre project with a value of £1.9bn.
- 2nd place – £440m Point of Ayr Terminal CO2 Compression Station Project
- 3rd place – £285m CWL2 St Athan 148MW Data Centre Campus
Key findings: top construction projects in Wales
- Total value: The top 30 Wales construction projects total £4.10bn.
- Utilities lead the table: Utilities has 12 entries worth £2.55bn, or 62% of the total, led by the £1.94bn Rover Way Energy Park and Data Centre.
- Residential: Residential has 8 entries worth £428m, or 10% of the combined value.
- Healthcare: Four Medical & Healthcare projects total £221m, or 5% of the combined value, led by the £121m Llantrisant Health Park.
- Data centres: Two data centre projects total £2.22bn, or 54% of the combined value, and both are in the top three.
- Regional analysis: Wales has 3 of the UK’s top 100 construction projects, worth £2.66bn.
View other top construction project rankings by region and city
Regional Tables: UK | London | South East | South West | East of England | East Midlands | West Midlands | Northern Ireland | North West | Wales | Yorkshire & the Humber | North East | Scotland
City Tables: Birmingham | Liverpool | Manchester | Aberdeen | Cardiff | Nottingham | Glasgow |
Top Construction Projects Wales 2027 League Table
| Position | Project | Main Sector | Region | Start Date | Project Value | Project ID | View Project |
|---|---|---|---|---|---|---|---|
| 1 | Rover Way, Splott - Energy Park & 90MW Data Centre | Utilities | Wales | Apr-27 | £ 1,935,000,000 | 12778496 | View project |
| 2 | Point of Ayr Terminal CO2 Compression Station Project | Power & Utility | Wales | Aug-26 | £ 440,000,000 | 12937777 | View project |
| 3 | CWL2 St Athan 148MW Data Centre Campus | Commercial & Retail | Wales | Apr-27 | £ 285,000,000 | 12727863 | View project |
| 4 | Llantrisant Health Park Phase 1 | Medical & Healthcare | Wales | Apr-26 | £ 121,000,000 | 12864335 | View project |
| 5 | Bronwylfa Road, Rhostyllen - 400MW Energy Storage System | Utilities | Wales | Jan-27 | £ 120,000,000 | 12775179 | View project |
| 6 | Garn Fach - 110MW Wind Farm | Utilities | Wales | Apr-27 | £ 110,000,000 | 12627431 | View project |
| 7 | Harlech Court - 340 Flats, Retail Unit and Restaurant | Residential | Wales | Dec-26 | £ 100,000,000 | 12555015 | View project |
| 8 | Parc Dyffryn Solar Park - 65MW Solar Farm & Battery Storage | Utilities | Wales | Apr-27 | £ 65,000,000 | 12551225 | View project |
| 9 | St Fagans Road, Phase 1 - 307 Houses | Residential | Wales | Apr-26 | £ 62,760,000 | 12839772 | View project |
| 10 | Atlantic Wharf, 1 East Bay Close- 353 Apartments | Residential | Wales | Apr-27 | £ 60,000,000 | 12653793 | View project |
| 11 | Maes Melin - 200MW Battery Energy Storage System | Utilities | Wales | Jan-27 | £ 60,000,000 | 12771478 | View project |
| 12 | Llantrisant Road - Phase 1 & Parcel 2C - 184 Houses | Residential | Wales | May-26 | £ 55,000,000 | 12851711 | View project |
| 13 | Kingsway Bridgend Industrial Estate - Industrial, Storage & Offices | Industrial | Wales | Nov-26 | £ 50,736,000 | 12852130 | View project |
| 14 | Puma Energy Site - 20MW Hydrogen Generation Facility | Utilities | Wales | Jul-26 | £ 50,000,000 | 12730485 | View project |
| 15 | Skyline Swansea, Kilvey Hill - Leisure Park | Leisure | Wales | May-26 | £ 49,000,000 | 12753225 | View project |
| 16 | St Lythans Road - 42MW Parc Worlton Solar Farm | Utilities | Wales | Nov-26 | £ 42,000,000 | 12658214 | View project |
| 17 | Ewenny Road - 201 Houses | Residential | Wales | Oct-26 | £ 41,800,000 | 12761247 | View project |
| 18 | Caerphilly Train Station Redevelopment | Civil Engineering | Wales | Mar-27 | £ 40,320,000 | 12423790 | View project |
| 19 | Phase 4E - 4G Queensway, Llanwern - 238 Houses | Residential | Wales | Nov-26 | £ 37,380,000 | 12838309 | View project |
| 20 | Former County Hall, Croesyceiliog - 107 Houses/36 Apartments | Residential | Wales | Sep-26 | £ 35,600,000 | 12404135 | View project |
| 21 | Llanilltern Village Phase 4&5 - Mixed Development | Residential | Wales | Dec-26 | £ 35,250,000 | 12692508 | View project |
| 22 | Cil-Lonydd Farm, Newbridge - 35MW Solar Panels & Battery Storage | Utilities | Wales | Jan-27 | £ 35,000,000 | 12734688 | View project |
| 23 | Mynydd Fforch Dwm - 35MW Wind Farm | Utilities | Wales | Dec-26 | £ 35,000,000 | 12637123 | View project |
| 24 | Parc Solar Traffwll - 35MW Solar Farm | Utilities | Wales | Jan-27 | £ 35,000,000 | 12627394 | View project |
| 25 | Parkview Health and Wellbeing Hub | Medical & Healthcare | Wales | Sep-26 | £ 34,300,000 | 12670732 | View project |
| 26 | Mynydd Carn Y Cefn - 34MW Wind Farm | Utilities | Wales | Jan-27 | £ 34,000,000 | 12567281 | View project |
| 27 | Royal Alexandra Hospital - North Denbighshire Community Hub | Medical & Healthcare | Wales | Jul-26 | £ 33,000,000 | 12521408 | View project |
| 28 | Royal Alexandra Hospital - Same Day Emergency Care Facility | Medical & Healthcare | Wales | Jul-26 | £ 33,000,000 | 12878736 | View project |
| 29 | Gyfun Gymraeg Bryn Tawe School - Expansion & Remodelling | Education | Wales | Feb-27 | £ 32,000,000 | 12783515 | View project |
| 30 | HyBont Green 6MW Hydrogen Production Facility | Utilities | Wales | Jan-27 | £ 31,000,000 | 12735339 | View project |
| Position | Project | Main Sector | Region | Start Date | Project Value | Project ID | View Project |
|---|---|---|---|---|---|---|---|
| 1 | Rover Way, Splott - Energy Park & 90MW Data Centre | Utilities | Wales | Apr-27 | £ 1,935,000,000 | 12778496 | View project |
| 2 | Point of Ayr Terminal CO2 Compression Station Project | Power & Utility | Wales | Aug-26 | £ 440,000,000 | 12937777 | View project |
| 3 | CWL2 St Athan 148MW Data Centre Campus | Commercial & Retail | Wales | Apr-27 | £ 285,000,000 | 12727863 | View project |
| 4 | Llantrisant Health Park Phase 1 | Medical & Healthcare | Wales | Apr-26 | £ 121,000,000 | 12864335 | View project |
| 5 | Bronwylfa Road, Rhostyllen - 400MW Energy Storage System | Utilities | Wales | Jan-27 | £ 120,000,000 | 12775179 | View project |
| 6 | Garn Fach - 110MW Wind Farm | Utilities | Wales | Apr-27 | £ 110,000,000 | 12627431 | View project |
| 7 | Harlech Court - 340 Flats, Retail Unit and Restaurant | Residential | Wales | Dec-26 | £ 100,000,000 | 12555015 | View project |
| 8 | Parc Dyffryn Solar Park - 65MW Solar Farm & Battery Storage | Utilities | Wales | Apr-27 | £ 65,000,000 | 12551225 | View project |
| 9 | St Fagans Road, Phase 1 - 307 Houses | Residential | Wales | Apr-26 | £ 62,760,000 | 12839772 | View project |
| 10 | Atlantic Wharf, 1 East Bay Close- 353 Apartments | Residential | Wales | Apr-27 | £ 60,000,000 | 12653793 | View project |
| 11 | Maes Melin - 200MW Battery Energy Storage System | Utilities | Wales | Jan-27 | £ 60,000,000 | 12771478 | View project |
| 12 | Llantrisant Road - Phase 1 & Parcel 2C - 184 Houses | Residential | Wales | May-26 | £ 55,000,000 | 12851711 | View project |
| 13 | Kingsway Bridgend Industrial Estate - Industrial, Storage & Offices | Industrial | Wales | Nov-26 | £ 50,736,000 | 12852130 | View project |
| 14 | Puma Energy Site - 20MW Hydrogen Generation Facility | Utilities | Wales | Jul-26 | £ 50,000,000 | 12730485 | View project |
| 15 | Skyline Swansea, Kilvey Hill - Leisure Park | Leisure | Wales | May-26 | £ 49,000,000 | 12753225 | View project |
| 16 | St Lythans Road - 42MW Parc Worlton Solar Farm | Utilities | Wales | Nov-26 | £ 42,000,000 | 12658214 | View project |
| 17 | Ewenny Road - 201 Houses | Residential | Wales | Oct-26 | £ 41,800,000 | 12761247 | View project |
| 18 | Caerphilly Train Station Redevelopment | Civil Engineering | Wales | Mar-27 | £ 40,320,000 | 12423790 | View project |
| 19 | Phase 4E - 4G Queensway, Llanwern - 238 Houses | Residential | Wales | Nov-26 | £ 37,380,000 | 12838309 | View project |
| 20 | Former County Hall, Croesyceiliog - 107 Houses/36 Apartments | Residential | Wales | Sep-26 | £ 35,600,000 | 12404135 | View project |
| 21 | Llanilltern Village Phase 4&5 - Mixed Development | Residential | Wales | Dec-26 | £ 35,250,000 | 12692508 | View project |
| 22 | Cil-Lonydd Farm, Newbridge - 35MW Solar Panels & Battery Storage | Utilities | Wales | Jan-27 | £ 35,000,000 | 12734688 | View project |
| 23 | Mynydd Fforch Dwm - 35MW Wind Farm | Utilities | Wales | Dec-26 | £ 35,000,000 | 12637123 | View project |
| 24 | Parc Solar Traffwll - 35MW Solar Farm | Utilities | Wales | Jan-27 | £ 35,000,000 | 12627394 | View project |
| 25 | Parkview Health and Wellbeing Hub | Medical & Healthcare | Wales | Sep-26 | £ 34,300,000 | 12670732 | View project |
| 26 | Mynydd Carn Y Cefn - 34MW Wind Farm | Utilities | Wales | Jan-27 | £ 34,000,000 | 12567281 | View project |
| 27 | Royal Alexandra Hospital - North Denbighshire Community Hub | Medical & Healthcare | Wales | Jul-26 | £ 33,000,000 | 12521408 | View project |
| 28 | Royal Alexandra Hospital - Same Day Emergency Care Facility | Medical & Healthcare | Wales | Jul-26 | £ 33,000,000 | 12878736 | View project |
| 29 | Gyfun Gymraeg Bryn Tawe School - Expansion & Remodelling | Education | Wales | Feb-27 | £ 32,000,000 | 12783515 | View project |
| 30 | HyBont Green 6MW Hydrogen Production Facility | Utilities | Wales | Jan-27 | £ 31,000,000 | 12735339 | View project |
How to use this league table
Projects are ranked by value by default, but you have several ways to customise your view:
- Number of results: Use the display toggle to show between 10 and all 30 projects at once.
- Search: Use the search bar in the upper right hand corner of the table to search for project names, values, start dates, or positions.
- Project value: Click the value column to switch between highest and lowest.
- Start date: Click the start date column to switch between newest and oldest.
- Alphabetical sorting: Click the project name, sector, or location columns to sort A–Z or Z–A.
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How are these tables ranked?
The top construction project rankings are sourced directly from Barbour ABI’s Construction Project Leads Platform.
The rankings are based on projects by total value with a start date six months back through to six months forward. All construction sectors are eligible to be included.
Please note that we’ve excluded all masterplans from our league tables and instead focus on individual projects.
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Top Construction Projects across the UK
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FAQs
- Rover Way, Splott – Energy Park & 90MW Data Centre: £1.94bn
- Point of Ayr Terminal CO2 Compression Station Project: £440m
- CWL2 St Athan 148MW Data Centre Campus: £285m
- Llantrisant Health Park Phase 1: £121m
- Bronwylfa Road, Rhostyllen – 400MW Energy Storage System: £120m
- Garn Fach – 110MW Wind Farm: £110m
- Harlech Court – 340 Flats, Retail Unit and Restaurant: £100m
- Parc Dyffryn Solar Park – 65MW Solar Farm & Battery Storage: £65m
- St Fagans Road, Phase 1 – 307 Houses: £63m
- Atlantic Wharf, 1 East Bay Close – 353 Apartments: £60m
As of November 2026, the biggest construction project in Wales is the Rover Way, Splott Energy Park & 90MW Data Centre, valued at £1.94bn. It’s also the second-largest project in the UK Top 100.
Our league tables include the top construction projects by total value across all sectors with a start date from six months back to six months forward. Please note that we’ve excluded all masterplans from our league tables and instead focus on individual projects.
All construction project data is sourced directly from our Construction Project Leads Platform.
Subscribers of the platform can access the top construction projects featured in the league table by copying and pasting the Project ID into the platform’s search bar.
Learn more about using our search options on our platform here.
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Energy projects dominate Wales’ major construction projects.
Utilities and Power & Utility together have 13 projects worth £2.99bn, or 73% of the total. The Rover Way Energy Park alone accounts for £1.94bn (47%). The rest is made up of wind farms, solar farms, battery storage and hydrogen schemes, along with the £440m Point of Ayr CO2 Compression Station.
Residential has 8 projects worth £428m (10%), with an average value of around £53m.
Commercial & Retail has 1 project worth £285m (7%), the CWL2 St Athan 148MW Data Centre Campus.
Medical & Healthcare has 4 projects worth £221m (5%), led by the £121m Llantrisant Health Park.
No other sector makes up more than 1% of the total value.
All of Barbour ABI’s league tables are updated on a quarterly basis.
