Decarbonisation
Decarbonising Our Business
We work closely with our customers, prioritising collaboration to help achieve our shared goal of creating a more sustainable built environment. To have the biggest impact, we encourage early supplier engagement – no matter the project size or complexity. This approach enables us to provide tailored guidance and solutions that add value at every stage of a project. Whether it’s enhancing efficiency, improving performance, or addressing specific project challenges, we strive to deliver outcomes that benefit both our customers and the wider built environment.
Decarbonisation Targets
42%
Roadstone is committed to reducing absolute gross Scope 1 and Scope 2 (Market-Based) emissions by 42% by 2030 from a 2021 absolute base year, an important milestone of our strategy towards achieving our ambition to be net-zero by 2050. This was validated by the Science Based Targets initiative (SBTi) through the CRH Group.
30%
Roadstone are also aligned with CRH’s target to reduce absolute Scope 1, 2 (Market-Based) & 3 GHG emissions across the business by 30% by 2030 from a 2021 base year.
26%, 100% & 27.5%
In order to achieve both overarching targets the individual absolute gross Scope 1, Scope 2 (Market-Based) & Scope 3 reduction targets are 26%, 100% & 27.5%, respectively.
Decarbonisation Measures & Action Plan
Renewable Energy & Low-Carbon Technology
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On-Site Renewable Solar Electricity Generation
Reduce Scope 2 emissions by generating renewable electricity on-site, decreasing reliance on grid electricity and improving energy autonomy across Roadstone facilities.Status: In-Progress
Use of HVO
Reduce Scope 1 emissions by replacing fossil diesel with HVO (a low-carbon, renewable fuel) in Roadstone’s mobile plant, heavy machinery, and transport fleet.Status: Planned
Procurement of Certified Green Electricity
Reduce Scope 2 emissions by transitioning Roadstone’s electricity supply to certified renewable sources, such as wind, solar or hydro, backed by Guarantees of Origin (GoOs) or equivalent certification.Status: In-Progress
Material Circularity & Material Optimisation
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Repurposing & Rethinking of Materials
Implementation of a Circular materials strategy that prioritises internal reuse, external sourcing of recycled inputs and design optimisation to reduce material intensity and waste generation to reduce Scope 3 emissions. Such as the optimisation of Reclaimed Asphalt Plannings (RAP) in asphalt and Recycled Concrete Aggregates in UGM. Collaboration with specifiers and Government bodies to promote the use of Circular material. Status: In-Progress
Lower-Carbon Binders & Bio-Binders
Reduce Scope 3 emissions by integrating lower-carbon binders into Roadstone's products where technically feasible, without compromising performance or compliance and prioritise their use in high-volume application in conjunction with client & project requirements.Status: In-Progress
Mixture Optimisation & R&D
Reduce Scope 3 emissions by optimising concrete and asphalt mix designs using advanced admixtures, performance-enhancing additives and ongoing R&D, enabling lower cement and binder content without compromising quality.Status: In-Progress
Sustainable Procurement & Value Chain Engagement
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Sustainable Procurement of Energy-Efficient Equipment
Reduce Scope 1 emissions by prioritising the procurement of energy-efficient heavy mobile equipment (HME), trucks and other operational machinery during fleet renewal and expansion.Status: Planned
Procurement of Materials with EPDs/Emission Specific Data
Reduce Scope 3 emissions by prioritising the procurement of construction materials that are transparently documented through Environmental Product Declarations (EPDs) or equivalent emissions-specific data, enabling informed decision-making and accurate carbon accounting.Status: Planned
Customer Engagement and Education on Lower-Carbon Products
Reduce emissions across the full value chain by actively engaging customers and clients to raise awareness of the carbon footprint of construction materials and promote the adoption of lower-carbon alternatives such as CEVO concrete, through CPD sessions, data transparency, and collaborative design.Status: In-Progress
Energy Efficiency & Energy Reduction
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Electrification of Equipment & Processes
Reduce Scope 1 and Scope 2 emissions by transitioning selected fossil fuel-powered processes and equipment to electric alternatives, where technically and economically feasible.Status: In-Progress
Warm Mix Asphalt
Reduce Scope 1 emissions by lowering the production temperature of asphalt mixes through the increased use of Warm Mix Asphalt technologies, thereby decreasing fuel consumption during manufacturing.Status: In-Progress
Procurement of Hybrid HME
Reduce Scope 1 emissions by replacing conventional diesel-powered heavy mobile equipment with hybrid alternatives at the end of their operational life, where economically and technically feasible.Status: Planned
Batching Control Optimisation
Reduce Scope 1 and Scope 3 emissions by enhancing batching accuracy thereby minimising overproduction, material waste and unnecessary fuel use.Status: In-Progress
Location Energy Benchmarking
Reduce Scope 1 and Scope 2 emissions by establishing energy intensity benchmarks across Roadstone’s sites and product lines, using ISO 50001 audits and best practice sharing to identify and act on improvement opportunities.Status: In-Progress
Staff Training & Engagement
Reduce Scope 1, Scope 2, and Scope 3 emissions by equipping staff with the knowledge and motivation to adopt energy-efficient behaviours and responsible material use through targeted training and engagement initiatives.Status: In-Progress
CO₂ Performance Ladder
As part of our ongoing decarbonisation strategy and in recognition of our commitment to ambitious CO₂ reduction targets we are actively working towards company-wide certification under the CO₂ Performance Ladder.
The CO₂ Performance Ladder is a practical and effective tool that supports organisations in reducing their carbon emissions. It not only helps structure decarbonisation efforts across operations, projects and the supply chain but also offers a competitive advantage in public tenders based on the level of climate ambition demonstrated.
The CO₂ Performance Ladder is a practical and effective tool that supports organisations in reducing their carbon emissions. It not only helps structure decarbonisation efforts across operations, projects and the supply chain but also offers a competitive advantage in public tenders based on the level of climate ambition demonstrated.
CO₂ Performance Ladder
By achieving certification, we meet the highest standards set by the SKAO, demonstrating leadership in carbon management both within our organisation and across our sector. This includes the following:
We first calculated our CO₂ footprint in 2021, and it is now updated every six months. These updates are shared both internally and externally, offering a consistent and transparent view of our emissions across all energy flows. This insight ensures we remain focused on meeting our reduction targets, helping us track progress and maintain realistic, targeted, and effective action.
We have established measurable CO₂ reduction targets and implemented a range of initiatives to achieve them. These measures are reviewed regularly to ensure they remain effective and aligned with our sustainability strategy.
We are committed to transparency. Our energy & sustainability policies, CO₂ footprint, and progress toward reduction targets are communicated both internally and externally every six months.
As part of our sustainability commitment Roadstone have endorsed the IGBC Building a Zero Carbon Ireland Roadmap.
As part of our sustainability commitment Roadstone have endorsed the IGBC Building a Zero Carbon Ireland Roadmap.
We actively engage in sector-wide initiatives aimed at reducing CO₂ emissions beyond our own operations, contributing to broader climate goals and knowledge sharing.
Roadstone Participation Initiatives
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Sector Initiative Participation
SEAI Large Industry Energy Network (LIEN) & Industry Decarbonisation Partnership (IDP).Roadstone is an active member of SEAI’s Large Industry Energy Network (LIEN) and a participant in the newly launched Industry Decarbonisation Partnership (IDP). These initiatives bring together Ireland’s largest energy users to collaborate on improving energy performance and reducing carbon emissions and in 2022 alone, reported energy savings of 783 GWh, avoiding 177 kt of CO₂ emissions. Roadstone contributes through annual reporting, implementation of SEAI’s Energy Efficient Design (EED) process and a long-term strategy to achieve EXEED certification across all 11 asphalt production sites.
As a founding member of the IDP, Roadstone plays a proactive role in shaping sector-wide decarbonisation efforts, aligning with Ireland’s national climate targets to reduce greenhouse gas emissions by 51% by 2030 and achieve climate neutrality by 2050. This collaboration supports Roadstone’s commitment to continuous improvement and leadership in sustainable construction.
Development Project Participation
Supply Chain Sustainability School Ireland.Roadstone is a Founding Partner of the Supply Chain Sustainability School Ireland, a collaborative initiative aimed at enabling a world-class sustainable built environment through shared knowledge and action. The School provides free access to training and resources for contractors, suppliers, and clients, helping the sector meet national climate targets including the 2030 Climate Action Plan and net zero goals. Roadstone contributes technical expertise, delivers webinars (e.g. on Environmental Product Declarations). This initiative represents a new sector-wide measure to reduce Scope 3 CO₂ emissions by improving sustainability capability across the supply chain. Roadstone plays a leadership role in steering the School’s development and promoting participation, ensuring progress toward measurable impact. The project remains on track to aid the delivery of numerous Category C CO₂ Performance Ladder measures with high relevance and scalability across the Irish construction sector.
Sector Wide CO₂ Reduction Programme Participation
N52 Low Carbon Road Solutions Trial.Roadstone is proud to lead a sector-wide CO₂ reduction programme through its N52 Low CO₂ Road Solutions Trial, delivered in partnership with Transport Infrastructure Ireland (TII) and Meath County Council. This ambitious initiative demonstrates how advanced materials and technologies - including 70% reclaimed asphalt pavement (RAP), warm mix asphalt, bio-binders, HVO fuel and intelligent compaction - can significantly reduce embodied carbon in road construction. The trial achieved over 90% CO₂ savings in binder and base courses, targeting primarily Scope 1 and Scope 3 emissions.
As a technical lead, Roadstone coordinated the design, implementation and validation of the trial, which serves as a benchmark for future public infrastructure projects. The programme supports Ireland’s national climate goals and highlights the potential for scalable, low-carbon solutions across the sector. Continued collaboration with government and industry partners ensures progress towards several Category C CO₂ Performance Ladder measures with long-term impact.
Emissions Inventory & Reduction Progress Report
