Joint Position: Criteria for Curtain Walling in the EU Taxonomy Climate Delegated Act

22 Feb 2023

This joint position paper responds to the European Commission’s draft FAQs of 19 December 2022 on the interpretation of the EU Taxonomy Climate Delegated Act, specifically Question 40 concerning the eligibility of curtain walling under Section 3.5. The signatories argue that, in the medium term, the EU Taxonomy criteria should be updated to incorporate an “energy balance” approach for transparent products—such as windows and curtain walling—by replacing the single pan-European maximum U-value with heating and/or cooling energy demand thresholds tailored to different climate zones.

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