The SES BioSynEnergy system combines the SES BioEnergy & SynEnergy front-end to cleanly convert the biomass into renewable electrical energy while converting any synthetics to clean electrical energy. The use of pyrolysis to reduce both the biomass and synthetic materials to a clean gas ensures that any pollution is minimal and that dioxins and furans are not produced. This results in an in-vessel MBT system that is energy self-sufficient and exports a significant amount of renewable & clean electrical power. The conversion of biomass and synthetics to energy, eliminates the need for external power and greatly increases landfill diversion which can be as high as 95%, dependent upon the waste stream. The MBT front-end ensures that recyclable materials can be cleanly recovered. The SES BioSynEnergy System is particulary suitable for areas of good soil quality where landfill and electrical energy are at a premium.