We were commissioned by Citizens Advice to conduct a series of in-depth interviews to explore the experiences and support needs of vulnerable consumers who are behind in their energy bills. The sample represented a range of different types of vulnerability including physical disabilities, long-term health conditions, mental health problems, caring responsibilities, severe financial hardship, as well as the experience of more transient and potentially hidden forms of vulnerability such as the experience of a life shock. We used a number of specific strategies to identify eligible people and overcome the barriers to their participation. We looked at their circumstances broadly to understand their support needs and what could help overcome the barriers to engagement with suppliers and other organisations. The full published report can be found here. We also produced an infographic to provide a visual summary of the research.