This report is the product of a mapping of resource efficiency in regulation and an analysis of generic approaches to implement resource efficiency in BAT conclusions. Market based as well asrule based type regulation was screened for examples of approaches of regulating resource efficiency. The identified examples are briefly described. Examples of resource efficiency in other regulation and the contributions from interest groups and organisations were used to identify generic approaches for resource efficiency regulation which has been exemplified in 18 inspirational examples of BAT conclusions. Cross-media aspects, barriers and alternatives were considered for each of the generic approaches. Based on these the feasibility of the different exemplified BAT conclusions were divided into three categories: most feasible, depending on the industry and least feasible.