![Close up of glazed façade](/sites/default/files/public/styles/page_header_large/public/2026-03/150478F0005-BOSL.jpg?h=17fd743d&itok=0hEl0hNZ) 03 March 2026 # Low-carbon simulation and optimisation at Reynaers Aluminium In a world where accurate information is key, Reynaers Aluminium can help you make the right educated decisions for your project. By simulating your building’s carbon footprint, you get a clear data-driven view of how we can improve your project's impact. This is how we approach your low-carbon needs. ## Our standard offer **Today, already more than 80% of our aluminium portfolio is low-carbon**. This is thanks to our strong supplier network that we have built over the last few years. The average carbon footprint of our aluminium profiles in 2025 is **3.31 kg CO2e/kg** aluminium (-35% vs. 2019). We plan to further reduce it to 2.81 by 2030 (-46% vs. 2019), which is in line with EU Green Deal legislation. That's good news for your project, and our planet! ![Architect examining aluminum window profile cross-section](/sites/default/files/public/styles/image_max_width/public/2026-03/Reynaers_aluminium_shoot_March_2025-124_0.jpg?itok=cPIJ96JH) #### Our low-carbon standard offer already meets EU Green Deal expectations. ## Project-level simulation and optimisation Some projects require extremely low carbon levels, even lower than official international standards. For those exceptional cases, we offer simulation and optimisation services on demand. We can **simulate the embodied carbon footprint of the aluminium** for your specific project, based on current design and material choices. Our internal estimation tool provides a clear overview of **how our profiles can help reduce your project’s carbon impact**, compared to the European CO2 average. Enjoy full transparency, starting from the very first design. If you want to achieve even lower carbon levels, we can optimise our offer through **targeted aluminium sourcing and configuration**. That way, you can reach even the most ambitious sustainable targets. However, there is a bigger picture. ![woman looking up in front of high-rise building](/sites/default/files/public/styles/story_biography/public/2026-03/Reynaers_aluminium_shoot_March_2025-167.jpg?h=d94088b7&itok=bdB-Uhl9) A different perspective While we do offer the option to simulate and optimise, we believe our standard aluminium offer already provides a highly competitive solution for most applications. Plus, there is more to life than low-carbon figures. If we want to create truly sustainable buildings and homes, we must look at Sustainability... From every angle. ## Frequently Asked Questions ### What is low-carbon aluminium? While "low-carbon" primary aluminium is not formally defined, it encompasses all virgin material with a carbon footprint equal to or lower than 4.38 kgCO2/kg aluminium (billet + extrusion). In practice, low-carbon aluminium is **a mix of recycled aluminium and low-carbon primary aluminium produced with clean energy.** For a full analysis of the topic, you can visit the Aluminium Stewardship Initiative (ASI) website for more details. [ To the ASI website ](https://aluminium-stewardship.org/low-carbon-aluminium "To the ASI website") ### What is carbon accounting? **Carbon accounting** in the building sector is the process of measuring and tracking the greenhouse gas emissions produced during the lifecycle of a building. It helps to understand a project's climate impact by calculating emissions across operations, energy use and supply chains. With this data, building professionals can set reduction targets, report transparently and take action to lower their carbon footprint, which is required by EU Green Deal standards. ### What is the carbon footprint of Reynaers Aluminium profiles? The average carbon footprint of our aluminium profiles in 2025 is **3.31 kg CO2e/kg** aluminium (billet + extrusion), which is a -35% reduction compared to our 2019 baseline. We plan to further reduce it to 2.81 by 2030 (-46% vs. 2019), which is in line with EU Green Deal legislation. Additionally, **more than 80%** of our aluminium supply consists of low-carbon aluminium (European distribution network). 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