PEF & EPD
A PEF (Product Environmental Footprint) is an EU-developed method with one harmonised set of rules, making product comparisons consistent and reliable across countries and sectors. An EPD (Environmental Product Declaration) is a third-party verified report, but because it’s managed by different programme operators with varying rules, EPDs are not always directly comparable.
In short:
PEF = standardised & comparable
EPD = verified & widely used, but less consistent.