The Energy for Sustainable Development in the Caribbean (ESD) is the first attempt to develop a regional program to address the inefficient use of energy in buildings in Small Island Developing States (SIDS) in the Caribbean. The project’s objective is to transfer and implement sustainable energy policies, instruments and knowledge in the Caribbean SIDS through the promotion of energy efficiency applications and renewable energy use within the residential and public building sector. The projects will addresses a number of barriers including information, regulatory, capacity building and financial barriers and there is an expectation that some of the information and lessons derived can be extrapolated to the rest of the region. Further, the benefits of the program, particularly those related to knowledge management and capacity building, are expected to be enhanced by the sub-regional approach; simultaneously, the outcomes of the activities related to financing mechanisms and regulatory systems for energy efficiency applications and renewable energy use within the residential and public building sector are also expected to contribute towards the current efforts for regional harmonization of policies for energy, which is in-keeping with the CARICOM Energy Policy (CEP) and the SIDS DOCK. In general, the ESD program constitutes a “judicious mix” of policy and demonstration activities, which are intended to reduce electricity use within the household and public (government) sectors in the program’s territories by 20 per cent from the business as usual (BAU) scenario.