Within the framework of the Energy Strategy 2050, electricity meters used by end consumers are being replaced with smart meters. Recent research suggests that this transition does not automatically lead to energy savings, but that targeted interventions tailored to specific groups can fulfil the promise of reducing consumption. However, experimental studies that test such targeted interventions in the field and allow causal conclusions are lacking. The present project uses the smart meter rollout of the Elec-tricity Utility of the City of Zurich (ewz) as the setting for several field experiments. It examines, first, which interventions incentives and information motivate users to engage with the smart meter platform for the first time and, second, how effective these interventions are in promoting sustainable electricity consumption among different target groups. The insights gained will be applied to the development of new instruments tailored to specific audiences. This interim report summarises the work conducted since March 2024. These activities include, first, Work Package 1 identification of effective onboarding interventions, second, Work Package 2 targeted interventions to promote energy savings, third, a short report on segmentation and, fourth, a compre-hensive review of the legal framework. The results of Work Package 1 show that the main motives for using the platform lie in its entertainment value, its usefulness for saving electricity for example the ability to monitor electricity consumption more closely and the interest in data related to electricity usage. Households that display energy efficient behaviour are more likely to use the platform repeatedly than those that do not. The intention to use the platform cannot be predicted by sociodemographic factors, willingness to innovate or data protection concerns. Onboarding flyers focusing on the entertainment aspect, the potential to save costs or the communication of a social norm associated with using the platform have no effect on either the intention to use the platform or actual usage. It is recommended to validate these findings in another field exper-iment. In particular, additional onboarding interventions that address the relevant motives should be tested. The research team is currently focusing on interventions to promote energy savings as part of Work Package 2.