Demonstration of the potential use of off-grid renewable energy in agricultural production in rural Uganda

Abstract

Background As the world's consciousness of the threats posed by the current state of climate change and its related consequences on food security increase, several nations, including Uganda, have modified their long-term plans for the shift to low-carbon economies and provision of affordable off-grid renewable energy (RE) sources especially in rural areas. Methods Through a citizen science initiative, this study examined the adoption of off-grid renewable energy in agricultural production in rural Uganda, with a focus on solar, charcoal briquettes, and biogas technologies. The study employed a cross-sectional study design and combined qualitative and quantitative data collection methods. Data were collected through structured interviews with 1,068 households and 20 key informants. An in-depth review of case studies of RE use in agriculture was also done. Results All respondents embraced at least one RE technology, predominantly solar (92% of respondents), highlighting its widespread adoption. Women exhibited higher adoption rates, particularly in solar and charcoal briquettes usage. The diverse applications of RE in agriculture were evident ranging from solar-powered irrigation, drying of produce, brooding, to biogas digesters for fertilizer production. Benefits associated with RE implementation were multifaceted, including time savings, enhanced health and safety, income generation, and environmental sustainability. Despite these advantages, barriers such as high initial costs and limited awareness persist. Conclusions This study highlights the significant potential of off-grid renewable energy in agricultural production in rural Uganda. Widespread adoption and scale-up of RE technologies requires strong collaborations between government, non-government organisations and private actors to build community awareness, train community resource persons on operation and management, and provide financing for the acquisition of RE technologies.