This report examines the evidence for direct rebound effects that is available from studies that use econometric techniques to analyse secondary data. The focus throughout is on consumer energy services, since this is where the bulk of the evidence lies. The evidence relevant to direct rebound effects for producers is discussed separately in Technical Reports 3, 4 and 5. This report clarifies the theoretical and methodological issues associated with such estimates, highlights the strengths and limitations of different approaches and summarises the available evidence for direct rebound effects for consumer energy services, paying particular attention to personal automotive transportation. |