To achieve a climate-neutral electricity system, it is crucial to fully tap into the potential of residential flexibility. However, there is limited knowledge regarding the obstacles preventing households from adjusting their electricity usage in a flexible manner according to the system's requirements. This research project utilizes causal inference techniques to shed light on these barriers and propose strategies to overcome them. We collaborate with various partners and leverage two exclusive datasets for this purpose. Firstly, we analyze data from a large-scale smart charging program for electric vehicles to assess how human behavior impacts the potential for flexibility. Secondly, the project examines the consumption patterns of Flemish households and calculates the causal impact (and elasticity) of implementing the "capacity tariff." Specifically, we estimate the causal impact of the capacity tariff on charging behaviors, with a focus on the strategies adopted by households in response to this new tariff. This research provides an opportunity to generate innovative and fundamental insights into how households engage with their flexible assets and adjust their electricity consumption in reaction to policy changes.