Behavioural science interventions advancing energy efficiency have mostly focused on consumer behaviour, with comparatively little work examining the important role that industrial consumers play in advancing the energy transition. Using the D.R.I.V.E.® framework, the project identified, analysed and consolidated the relevant literature and potential of behavioural science informed approaches to help SMEs become more energy efficient. Starting from a comprehensive review of the academic and global best practice literature and an extensive qualitative research with Swiss SMEs, the key motivators and barriers to greater SME energy efficiency in Switzerland were identified. Based on these insights a catalogue of suitable behavioural science interventions and guidance on successful field trials was developed. The final report includes a description of each intervention's goals, expected technical requirements and effects, framework conditions, and concrete implementation recommendations for field trials in Switzerland and beyond.