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Promotional campaign duration and word of mouth in solar panel adoption

Author

Listed:
  • Bryan Bollinger

    (NYU - New York University [New York] - NYU - NYU System)

  • Kenneth Gillingham

    (Yale University [New Haven], NBER - The National Bureau of Economic Research)

  • Stefan Lamp

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - Comue de Toulouse - Communauté d'universités et établissements de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

  • Tsvetan Tsvetanov

    (University of Kansas [Kansas City])

Abstract

Intensive marketing campaigns can be used to increase awareness, consideration, purchase, and word of mouth (WOM) of prosocial products. With expanded interest and belief in how social norms and spillovers might be leveraged to combat climate change, it is critical to understand how campaigns designed to leverage such peer effects can be best designed. In this paper, we study the role of campaign duration in solar photovoltaic adoption using a large-scale field experiment in which we randomly assign communities to campaigns with shorter durations, increasing the marketing intensity to maintain the same total resources per campaign. We find that the longer campaigns generate more WOM and lead to more adoption postcampaign despite a comparable number of installations during the campaigns. The shorter campaigns led to 22.6 fewer installations per town in the two years after the campaigns concluded, leading to a cost per acquisition of $4,367 versus $2,029 in the longer campaigns, the latter being lower than installers' self-reported acquisition costs and the former being substantially higher.

Suggested Citation

  • Bryan Bollinger & Kenneth Gillingham & Stefan Lamp & Tsvetan Tsvetanov, 2024. "Promotional campaign duration and word of mouth in solar panel adoption," Post-Print hal-04867252, HAL.
    • Handle: RePEc:hal:journl:hal-04867252
    DOI: 10.1287/mksc.2022.0243
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