ISGAN. All Rights Reserved. The ISGAN TCP is part of a network of autonomous collaborative partnerships focused on a wide range of energy technologies known as Technology Collaboration Programmes or TCPs. The TCPs are organised under the auspices of the International Energy Agency (IEA), but the TCPs are functionally and legally autonomous. Views, findings and publications of the ISGAN TCP do not necessarily represent the views or policies of the IEA Secretariat or its individual member countries.