ABSTRACT
The collection of data is time-consuming, expensive, and requires a level of infrastructural organization that is missing in most developing countries. The Tanzania Urban Energy Project was undertaken to gather data about the use of energy in urban areas in Tanzania. The backward-linkage methodology makes no provision for estimating total supplies provided to or from a particular area, except as calculated from woodfuel use data from the woodfuel paths emanating from household users. Using the backwards-linkage methodology, suppliers of woodfuel are weighted by the percentage of the time they are used as the supplier of choice for the buyer being interviewed. A sub-sample of end users was chosen from the sample of woodfuel users surveyed in the project's household survey done in the summer of 1990. A series of surveys examining the structure, functioning and magnitude of the woodfuel market network were undertaken in the fall of 1990.
