Open Access

Lynn Wagner, Melanie Speck (geb. Lukas)

• Climate crisis requires fast and effective changes. Since efficiency and consistency strategies haven´t been successful enough, sufficiency should be accelerated to meet the 1.5° goal and simultaneously contribute to a fair consumption space. In this case, everyone has a GHG budget of 2.5 tons per year, a limit currently being significantly surpassed. It is to be investigated how household carbon footprints can be altered through gamification and which potential barriers such as resources (time, money), value orientations, or lock-in effects can be identified. Mixed methods are used within a case study in Germany (n=25 private households). First, we use life cycle assessment to quantify the household carbon footprint (including housing, nutrition, mobility, leisure, consumption). Second, we do semi-structured interviews. Third, we use gamification to activate the sample to test sustainable options that focus on sufficiency for 4 weeks. Preliminary results show that sustainable options can be short-time implemented, especially in nutrition, while in other areas (mobility, housing) infrastructural changes are necessary. In conclusion, the approach leads to relevant GHG savings at the micro-level (private households). In addition, these results can be used to drive changes at the meso-level ("local politics and economy"), thus increasing the leverage effect for sustainable lifestyles.