Women preparing meals for more than 1,000 students at Tiyani Secondary School in South Africa’s Limpopo province no longer rely only on firewood. Instead, much of the cooking is powered by biogas generated from cattle dung collected from Tiyani village. This community-led project could reduce pressure on forests while cutting greenhouse gas emissions, experts say. The pilot project was established in 2022 with support from the University of Venda. Every weekday, four community volunteers from Tiyani use an ox-drawn cart to collect cattle dung from nearby households. The manure is then mixed with water and fed into a biogas converter digester, an airtight, oxygen-free container where microbes convert it into methane-rich biogas. The gas is then piped directly to the school kitchen, where it powers the cooking of breakfast and lunch for the school’s 1,054 learners. When there isn’t enough cow dung, the school still supplements with firewood. “We never imagined that something we regarded as waste could become a source of energy,” Fosta Chavalala, the community project manager of the biogas project, told Mongabay in an interview. “In future, we hope to expand the project” to rely more on gas than firewood. In a March 2025 article published in the industry magazine ReSource, David Tinarwo, head of the Biogas Research team at the University of Venda, said the project was designed to reduce dependence on firewood while making productive use of livestock waste. “The demand for firewood was placing pressure on local trees, and the way trees were being…This article was originally published on Mongabay

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