Over the past year, MBT has gone from being an acronym few people understood to the most talked about form of municipal waste management in Britain. It is heralded as the solution to local authorities' waste problems, enabling them to meet targets for the diversion of biodegradable municipal waste from landfill. Several plants will be up and running by 2006. But is it really the solution many authorities have been looking for? The answer seems to be dependent on the development of markets for refuse-derived fuel and whether such "fuels" become eligible for renewable obligation certificates.