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    Social comparison and energy conservation in a collective action context: A field experiment
    This field experiment quantifies the impact of social norm information on the demand for indoor temperature. Based on high-frequency data from indoor temperature monitors, we provide participating households with a comparison of average temperature in their apartments relative to that measured in a control group. For more than 90 percent of participants, financial benefits of energy savings are only indirect, as building-level heating costs are shared across apartments in proportion to their volume. Despite the associated collective action problem, we estimate that the intervention induces a -0.28 C reduction in average indoor temperature. This suggests that direct monetary incentives is not a pre-requisite for social comparison feedback to induce energy savings.