IN Brief:
- Keltbray Group, Curtins, and COWI UK have joined Innovate UK’s low-carbon concrete AMC.
- The initiative is designed to create demand for next-generation concrete once technical and commercial criteria are met.
- The signatory base has reached 13 organisations, with further infrastructure and construction clients in discussion.
Innovate UK has added Keltbray Group, Curtins, and COWI UK to its Advance Market Commitment for next-generation low-carbon concrete.
The three organisations take the initiative to 13 signatories, broadening its reach across contracting, engineering design, and infrastructure consultancy. The announcement was made during Concrete Transition Capital’s London Climate Action Week event focused on AI and data for good.
The Advance Market Commitment has been developed by Innovate UK in partnership with Carbon Limiting Technologies and backed by the Department for Energy Security and Net Zero. It is designed to accelerate commercialisation of innovative low-carbon concrete by creating a demand signal from buyers and specifiers.
Under the model, signatories commit to purchasing qualifying products once they meet agreed technical and commercial criteria. The existing group includes AtkinsRéalis, Buro Happold, Derwent London, Heathrow, JN Bentley, Mott MacDonald, Ramboll, Scottish Water, BAM UK & Ireland, and WSP.
The initiative has already reached more than 20% of its target volume within its first six months. Further infrastructure developers, water companies, data-centre builders, Tier 1 contractors, and engineering consultancies are understood to be in discussion.
Concrete remains one of construction’s hardest materials to decarbonise at scale. Cement production carries a high carbon burden, while structural performance, durability, standards, insurance, availability, and conservative procurement practices can all slow the adoption of new mixes and binders.
The AMC approach tackles a familiar market blockage. Product innovators need confidence that buyers will purchase at scale before investing in production, while clients often wait for proven products before committing to new specifications. A collective demand signal gives manufacturers, investors, and project teams more confidence that a market will exist if products meet the agreed thresholds.
Pilot projects remain useful, but they are not enough to change mainstream construction practice. Infrastructure, housing, commercial, and water-sector clients need repeatable supply, tested performance, certification, insurability, design guidance, and procurement routes before lower-carbon concrete can be used consistently across live schemes.
The involvement of contractors and consultants broadens the initiative beyond client procurement. Designers influence specification at concept and detailed design stages, while contractors influence delivery methods, supply-chain selection, programme risk, and site quality control. Clients set the commercial environment, but adoption depends on the full project chain accepting the material.
Insurance remains a sensitive barrier. Structural materials carry long service lives, and confidence in novel binders, alternative cementitious materials, and new mix designs must be strong enough to satisfy insurers, designers, warranty providers, asset owners, and contractors. Independent expert review within the AMC is intended to give signatories confidence that aligned products will meet their requirements.
The programme also connects with the growing use of digital tools in material specification. Environmental product declarations, material passports, embodied carbon models, and design-stage comparison platforms are becoming more common as clients ask teams to make carbon decisions earlier. The rise of embodied carbon design platforms points to a market in which low-carbon material choices increasingly need auditable data behind them.
For contractors, practical adoption will depend on regional availability, batch consistency, pumpability, curing profile, strength gain, durability, weather performance, and compatibility with programme requirements. A concrete mix that performs well in principle will struggle if it introduces delay, supply uncertainty, or additional site risk.
Cost will remain part of the calculation. Early lower-carbon products may carry a premium before manufacturing capacity scales, although aggregated demand can help suppliers justify investment and reduce unit costs over time. Clients will need to weigh capital cost, carbon targets, project risk, compliance, and whole-life performance when deciding where new mixes can be introduced.
The addition of Keltbray, Curtins, and COWI UK gives the commitment stronger links into delivery, structural design, and infrastructure planning. Concrete is embedded across foundations, frames, bridges, tunnels, water assets, highways, basements, and energy infrastructure. Lowering its carbon impact will require aligned demand across those applications, not isolated innovation at the edge of the market.
