The aim of the project Nýting gagna fyrir grunnviðmið kolefnisspors vegna losunar frá verkstöðum is to provide updated average values ​​for phases A4 and A5.

During the certification process for  buildings, data on emissions from construction is collected. This data is mostly used for compliance and documentation, but has so far not  been used to improve the accuracy of baseline criteria.

The Icelandic average values ​​given for phases A4 and A5 are 19.79 kgCO₂-ig/m² and 42.5 kgCO₂-ig/m². These values ​​are based on Icelandic life-cycle assessments that were available in 2022, but not many were available. 

Vegvísir að vistvænni mannvirkjagerð states that the aim is to reduce emissions from A4 and A5 by 70% by 2030. Updated average values ​​for emissions from construction sites contribute to achieving these goals – both in the context of Iceland’s commitments and within  individual projects. More accurate data makes decision-making more purposeful and makes it easier to clarify where the greatest reduction in emissions is possible. Such work can also be an incentive to improve accuracy in other phases of life cycle assessment.