Public policies shape how citizens consume energy, use land, and adopt new technologies. The SPACETIME project studies how environmental and spatial policies interact with market forces and individual behaviour. It develops empirical models that combine micro data on choices with general-equilibrium mechanisms to understand how policy affects welfare, emissions, and land use across regions. The research focuses on three main domains. First, the electrification of transport and its link to electricity markets, analysing how electric-vehicle (EV) charging affects power prices, generation costs, and emissions. Second, the functioning of land-protection policies in Europe, assessing whether they effectively preserve vegetation and biodiversity. Third, the role of information in consumer and firm decisions, developing new econometric tools to recover preferences when agents hold different private information. Together, these studies quantify how environmental policies propagate through markets and space, providing scientific foundations for EU strategies on climate neutrality, biodiversity conservation, and sustainable mobility.