Modelling options for module C and D: Experiences from 50 EPD for wood-based products in Norway

Abstract

Introducing the EN 15804 standard as a core PCR for building products included several specifications for LCA end-of-life and benefits beyond the life cycle. There are however several issues that the LCA practitioner need to interpret during the modelling and generic data needs to be adjusted for being representative and in accordance to EN 15804.The modelling of module C and D has been developed in three different stages during making 50 EPDs over several years. First the model was mainly based on generic data from ELCD database. The second was a statistics-based mix of different treatment options, where the substation of other energy sources in module D was a representative mix of district heating mix, electricity, coal in cement production, wood chips in wood industry and ELCD for exported waste. The third represented a 100 % scenario for energy recovery in municipal waste incineration and substituting statistical mix of electricity and district heating. The objective of the study is to present the experiences from developing and implementing the module C and D in the 50 EPD that where verified at EPD-Norway and discuss in relation to requirements in standards and usability in a building context.