Emotions aren't always valued in society, but they are a crucial aspect of human behaviour and decision-making. Although, it is well-known that humans derive a sense of warm-glow from helping others, it is unclear whether this extends to more abstract and depersonalized issues such as ensuring a sustainable future for life on earth. In a national panel study, I find that people indeed anticipate that acting green will make them feel good, but this primarily extends to easier low-cost changes.