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Behavioural interventions yield electricity savings among high-income households in Johannesburg, South Africa

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  • Stephanie P Williams
  • Gladman Thondhlana
  • Harn Wei Kua

Abstract

The societal benefits of addressing wasteful electricity use practices through behavioural interventions are now well-established. Surprisingly, in South Africa, where the economy is highly dependent on fossil fuel (coal) for electricity generation, this subject remains little studied and understood. The residential sector is a major electricity consumer, and high-income households, in particular, use a substantial proportion of total electricity with serious adverse impacts on grid stability and the environment, which can disproportionately affect the poor. Using a field-based experiment, this study examines the impact of behavioural interventions on household electricity savings and the determinants of success among high-income households in Johannesburg, South Africa. Over the intervention period, households exposed to a combination of electricity-saving information, frequent reminders and feedback on monthly electricity-saving performance showed mean electricity savings of about 1.5%, ranging from 2% to 4% of electricity, while households in the control group showed increased electricity consumption by approximately 11%. Out of all the demographic and personal value factors considered, age, achievement and benevolence promoted electricity savings, while household size, number of rooms, baseline electricity consumption and security inhibited savings. The findings empirically validate the impact of behavioural interventions on, and the positive influence of, personal values in promoting participation in electricity-saving actions within households.

Suggested Citation

  • Stephanie P Williams & Gladman Thondhlana & Harn Wei Kua, 2022. "Behavioural interventions yield electricity savings among high-income households in Johannesburg, South Africa," Energy & Environment, , vol. 33(8), pages 1508-1523, December.
    • Handle: RePEc:sae:engenv:v:33:y:2022:i:8:p:1508-1523
    DOI: 10.1177/0958305X211044386
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    3. Tarun M. Khanna & Diana Danilenko & Qianyi Wang & Luke A. Smith & Bhumika T. V. & Aditya Narayan Rai & Jorge Sánchez Canales & Tim Repke & Max Callaghan & Mark Andor & Julian H. Elliott & Jan C. Minx, 2025. "Behavioral, Information, and Monetary Interventions to Reduce Energy Consumption in Households: A Living Systematic Review and Network Meta‐Analysis," Campbell Systematic Reviews, John Wiley & Sons, vol. 21(4), December.

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