Interest in the anaerobic digestion of organic wastes continues to grow and most countries in Europe have ambitious targets to encourage the uptake of this technology. Anaerobic digestion can make a valuable contribution to the diversion of organic wastes from landfill with the generation of renewable energy in the form of heat and power. Where the digestate is returned to agricultural land it helps to complete the nutrient cycles for nitrogen and phosphorus as well as adding valuable organic material to the soil. All of these in turn contribute to a country’s GHG reductions. As a result Interest is encouraged by a number of government funded initiatives typically based on the amount of renewable electricity and renewable heat generated. Often these incentives are fixed and guaranteed for twenty years or more, thus providing an element of security for the financial model of what is a capital intensive technology. However in order to claim these incentives, the technology must still perform to expectations and this requires that attention is paid both to its design and its continuous operation. In order to return the predicted methane yields from the digester feedstock, the digester must be designed appropriately with attention paid to its heating, feeding and mixing. In addition successful operation requires and understanding of the complex microbial and biochemical interactions involving phase changes from solid to liquid to gas. It is the aim of this successful course to provide delegates with a complete understanding of the digestion process. It provides an introduction to the process biochemistry and uses to this give delegates a full understanding of the process engineering requirements of full-scale digesters and how these are delivered in practice. It discusses digester operation in details and examines how different feedstocks influence both the digester design and its future operation. Finally the options available for managing recycling the digestate are considered with a detailed consideration of the typical costs and opportunities associated with digestate handling.