The Office of Technology Assessment is currently preparing an assessment of energy from biological processes. In the course of this study we have carried out an extensive analysis of alcohol fuels from agricultural products. This technical memorandum presents these findings in response to congressional interest in synthetic fuels. The purpose of the memorandum is to illuminate the technical and non-technical issues surrounding the development of gasohol. It discusses the resource base, production technologies, and economics of gasohol, and its use as a transportation fuel. The report also contains a discussion of the environmental problems and benefits of producing and using gasohol, and the social and institutional issues about using agricultural products for energy. While the memorandum does not present an analysis of policy issues, it does provide estimates of how much gasohol can be used at what cost, and the long-term prospects for ethanol production. All are important to the current congressional debate over development of a gasohol policy.