The launching of the Energy Institute (EI) by the founding members of the IP and InstE is discussed. There are 16 established EI Branches have been developed in consultation with the original Branch committees and their members. The Energy Institute has developed a new structure for Group Membership, with three distinct grades of membership which includes Group Member, Technical Group Member and Energy Institute Partner. A new grade of individual membership has been developed to allow individuals a fast-track route into membership without going through the full application process.