Melanie Vogel | Searcharxiv

arXiv2026

Solar-charge your car: EV charging can be aligned with renewables by providing pro-environmental information on a smartboard

Integrating electric vehicle (EV) charging with renewable energy production is essential for reducing the transport sector's carbon footprint, but effective and scalable strategies to align individual charging behavior with renewable supply remain underexplored. This quasi-experimental field study tests whether real-time prescriptive informational cues can influence EV drivers to charge during periods of high renewable energy availability. A smartboard displaying dynamic "charge green now" and "charge later" signals based on local photovoltaic forecasts and market prices was installed at a semi-residential charging facility in Ghent, Belgium. Hourly charging data (N = 619 days) were analyzed using a difference-in-differences design of lamp states between control-intervention garages at pre-trial and during-trial. Results are consistent with a behavioral effect of the "charge green now" smartboard lamps increasing number of charging operations and the total kWh charged during renewable-rich periods, without financial incentives. Emission modelling estimates that charging at the hours observed during the trial was associated with approximately 20% lower CO2-equivalent emissions compared with baseline charging patterns. These findings suggest that non-financial interventions, i.e., providing salient, real-time prescriptive information, may meaningfully contribute to demand-side flexibility in EV charging. The study offers practical insights for designing non-financial demand response mechanisms and offers a scalable, cost-effective method for reducing greenhouse gas emissions of EVs.

cs.ET↗

arXiv2025

Heating reduction as collective action: Impact on attitudes, behavior and energy consumption in a Polish field experiment

Heating and hot water usage account for nearly 80% of household energy consumption in the European Union. In order to reach the EU New Deal goals, new policies to reduce heat energy consumption are indispensable. However, research targeting reductions concentrates either on technical building interventions without considerations of people's behavior, or psychological interventions with no technical interference. Such interventions can be promising, but their true potential for scaling up can only be realized by testing approaches that integrate behavioral and technical solutions in tandem rather than in isolation. In this research, we study a mix of psychological and technical interventions targeting heating and hot water demand among students in Polish university dormitories. We evaluate effects on building energy consumption, behavioral spillovers and on social beliefs and attitudes in a pre-post quasi-experimental mixed-method field study in three student dormitories. Our findings reveal that the most effective approaches to yield energy savings were a direct, collectively framed request to students to reduce thermostat settings for the environment, and an automated technical adjustment of the heating curve temperature. Conversely, interventions targeting domestic hot water had unintended effects, including increased energy use and negative spillovers, such as higher water consumption. Further, we find that informing students about their active, collective participation had a positive impact on perceived social norms. Our findings highlight the importance of trialing interventions in controlled real-world settings to understand the interplay between technical systems, behaviors, and social impacts to enable scalable, evidence-based policies driving an effective and sustainable energy transition.

cs.ET↗