Agroforestry-Bioenergy System for Africa's Energy, Food, Health

This research proposes a novel integrated agroforestry-bioenergy system designed to address critical challenges in rural sub-Saharan Africa, where most people lack access to electricity and rely on traditional, inefficient, and polluting cooking solutions that negatively impact human health and the environment. The system combines sustainable biomass production in sequential agroforestry systems with biomass-based cleaner cooking solutions and small-scale combined heat and power plants for rural electricity production. The proposed approach demonstrates that on-farm biomass production can cover household fuelwood demands for cooking while generating a surplus of woody biomass for electricity production via gasification. The integrated system leverages agroforestry as a land use approach in which trees are grown and managed on the same land used for agricultural crops and/or livestock, either simultaneously or in temporal sequence. This integration provides multiple co-benefits beyond energy production, including enhanced agricultural productivity and food security through improved crop and livestock yields, enhanced soil health through biochar soil amendments, improved cooking conditions and health outcomes, enhanced soil fertility, climate change mitigation, gender equality promotion, and rural poverty reduction. The system addresses multiple sustainable development goals simultaneously by providing affordable, reliable, sustainable, and modern energy for rural communities while contributing to food security and ecosystem health. Agroforestry systems can provide sustainable biomass for energy production while improving soil moisture levels and reducing soil erosion, holding great promise for restoring degraded lands. The research demonstrates that such systems have considerable potential for carbon sequestration and can substantially boost agricultural yields compared to non-integrated approaches. The integrated design ensures that energy security, food security, and environmental sustainability are achieved together rather than as competing objectives, making it particularly suitable for resource-constrained rural communities.