The Horizon-funded crossCert project aims to highlight these differences and investigate what this means for “next generation” EPCs. As new innovations (e.g. metrics, consumer information, alternative methodologies) are being tested for upgrading EPCs, the ability to do this with equal effectiveness for all countries is questionable for such divergence of methods.
This paper reports on a cross-comparison of EPC methodologies to ascertain differences in numerical outputs and subsequent recommendations for buildings. This provides a holistic overview of how EPC approaches differ and where and why this might be important.