This Practice Note outlines key energy regulation issues in Great Britain Energy Services Companies (ESCos) projects, community energy projects and captive offtake (often referred to as ‘private wire’) projects. It focuses on Combined Heat and Power (CHP) projects and therefore is of particular relevance to biomass or waste to energy projects using incineration, anaerobic digestion, or advanced gasification. It covers in particular the key issues seen for these types of CHP projects in respect of CHP and Power purchase agreements (PPAs), CHP and supply licensing and distribution licensing, and licence exemptions for CHP private wire projects and those connected to the distribution network.