More than half of greenhouse gas emissions are generated within urban centres. Also, 80 % of the population lives and works in cities, where 80 % of the energy is consumed. Given that local authorities are the nearest public administration body, they should be a model for citizens by making rational use of energy and adopting sustainable consumption patterns.Therefore, the Municipality of Igoumenitsa will draw up an Action Plan for Sustainable Energy in order to improve energy efficiency and promote the installation of Renewable Energy Sources within the Municipality. The Action Plan will include a detailed energy inventory of consumption, which will help the Municipality to select, prioritise and implement measures in various axes both in the public and private sectors. These measures will be described in the Action Plan, together with an assessment of costs and environmental benefits after their implementation.