Solar panels are a symbol of the energy transition, but not every panel contributes equally to reducing CO₂ emissions. The materials a panel is made of, the way it is manufactured and what happens to it at the end of its life all determine the actual climate benefits. PFAS-free panels are playing an increasingly prominent role in this, not only for environmental reasons, but also as a concrete strategy for reducing CO₂ emissions at project level. For project developers, property managers and major installers who are serious about achieving their sustainability targets, the distinction between conventional and PFAS-free modules is therefore more than just a technical detail.
This article explains, step by step, how the presence of PFAS in traditional solar panels affects the carbon footprint, what role material composition plays in reducing the carbon footprint, and why circular and lightweight solar panels such as the Solarge SOLO make a fundamentally different contribution to the energy transition.
PFAS, the collective term for per- and polyfluoroalkyl substances, are used in traditional solar panels as part of protective coatings and backsheets. These substances are extremely persistent in the environment and hardly degrade at all, which has earned them the nickname “forever chemicals”. However, in addition to the direct environmental damage, the use of PFAS also has indirect consequences for a panel’s carbon footprint.
The production of PFAS-containing components is energy-intensive and involves chemical processes that generate significant emissions. Furthermore, PFAS make it virtually impossible to recycle panels responsibly at the end of their life. Panels that cannot be recycled end up in incinerators or on landfill sites, resulting in the loss of the material’s value and the release of additional emissions. This means that the carbon footprint of a traditional panel is not limited to the production phase, but continues long after installation.
For organisations that report on the basis of ESG criteria or use life-cycle assessments, this is a key point. The true carbon footprint of solar panels can only be fully understood if the end-of-life phase is also included in the calculation.
Choosing different materials is the most direct way to structurally reduce a solar panel’s carbon footprint. Whereas traditional glass modules are made of glass, aluminium and PFAS-containing components, Solarge’s sustainable solar panels are constructed from thermoplastic polymers. This difference in materials has far-reaching implications for emissions throughout the entire life cycle.
Aluminium and glass are raw materials whose extraction and processing require a great deal of energy. Thermoplastic polymers offer an alternative that requires considerably less energy in automated production. Solarge has thus developed a production process with CO₂ emissions up to 80% lower than those of conventional production methods. This is not a marginal improvement, but a fundamental rethinking of how a solar panel is manufactured.
Furthermore, the panels are completely free of PFAS, which means that no persistent chemicals are introduced into the supply chain. This is not only relevant for the environment, but also in light of the increasing regulation surrounding PFAS in the European Union. Project partners who opt for PFAS-free solar panels now are staying ahead of stricter requirements and avoiding future risks relating to compliance and liability.
A panel that is fully recyclable at the end of its life offers a twofold benefit in terms of CO₂ emissions: the materials remain within the supply chain, and the need for new raw material extraction is reduced. This principle lies at the heart of the circular approach that Solarge adopts with its SOLO modules.
The thermoplastic polymers from which the panels are made can be recovered and reused after use. This stands in stark contrast to traditional glass modules, where the combination of glass, silicon and PFAS-containing backsheets complicates the separation process or even makes it impossible. In practice, the vast majority of end-of-life conventional panels are not recycled to a high standard.
Circular solar panels close the material cycle and prevent the need to extract CO₂-intensive raw materials again. For projects with a long time horizon, such as large rooftop installations on logistics centres or industrial buildings, this is a factor that makes a measurable contribution to the total CO2 reduction over the project’s lifetime. Furthermore, every Solarge panel has its own C_passport®, which ensures that material flows are fully traceable. This not only enables transparent sustainability reporting, but also makes it verifiable.
The carbon footprint of a solar panel project is not determined solely by the production of the modules themselves. Installation and transport also contribute to the total emissions, and it is precisely in this area that lightweight solar panels offer a tangible advantage.
Solarge SOLO panels are 50% lighter than traditional glass modules. At project level, this means that less transport capacity is required per kilowatt installed, and that the installation itself is completed more quickly. Fewer vehicle movements and shorter installation times directly translate into lower emissions on the construction site. Furthermore, lighter panels can be installed on roofs that would be unable to bear the load of conventional modules, making projects possible that would otherwise not get off the ground.
The 50%’s faster installation process also has implications for the deployment of staff and equipment. Fewer hours spent on the scaffolding mean lower energy consumption by hoisting equipment, lower fuel consumption by service vehicles and a smaller operational footprint per project. For installers working on large-scale commercial roofs, these factors add up to a noticeable difference in total project emissions.
Where a panel is manufactured is at least as important as how it is manufactured. Most conventional solar panels are manufactured in Asia and then transported by ship to Europe. That supply chain adds a significant carbon footprint to each panel, even before it is installed on a roof.
Solarge manufactures its panels entirely in the Netherlands, at a modern 7,000 m² production facility in Weert. As a result, transport distances to European project sites are minimal, which further reduces the carbon footprint of each panel. Furthermore, local production makes the supply chain more transparent and less vulnerable to disruptions, a factor that is becoming increasingly important to major project partners.
European production also offers strategic independence. Project developers and property managers who opt for locally manufactured, PFAS-free panels make their projects less dependent on international trade flows and the associated risks. In a market where security of supply and demonstrable sustainability are increasingly becoming decisive criteria, the origin of a panel is no longer a minor consideration, but an integral part of the project strategy. Organisations that are already using the Solarge SOLO as part of their commercial rooftop installations are thereby positioning themselves not only for the current market, but also for the stricter requirements that will inevitably follow in the coming years.
This content was generated with the help of AI and it may contain mistakes
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