The paper aims at the presentation of a methodology for energy planning in urban historical centres, using the historical centre of Coimbra, an old Portuguese city, for illustrating purposes, The paper starts with a general perspective of the problems associated with planning activities in historical centres, It describes a methodological approach and general procedures used in the formulation of a mid-term energy plan and presents its main prospective items - identification of objectives and recommended measures, and evaluation of measures＇ impacts. It also draws a picture of the standard steps to be given and procedures to be adopted in similar plans. It then presents the formulation of the mid-term energy plan for the historical centre of Coimbra, Difficulties found and anticipated are listed and directions for circumventing them and for future methodology improvements are also presented,