This document summarizes a case study on bioenergy value chains in Tandai Village, Tanzania conducted by Anja Fasse of the Institute for Environmental Economics and World Trade. The study analyzed the wood and potential jatropha value chains through household surveys, development of a village social accounting matrix, and mathematical planning models. Key findings included that collecting jatropha required similar labor as firewood but provided more income, and scenario analyses optimizing for factors like household utility, profit, and labor use. The overall goal was to identify strategies for smallholders to benefit from bioenergy production while addressing food security and environmental issues.