Comparative study of the efficiency of public supports to investments in energy management in the European Union

This study proposes a detailed overview of public budgets invested by the different member States of the European Union via subsidy systems, loans or tax arrangements in order to support investments in energy efficiency in buildings. The author also studied results published for these public instruments in terms of energy savings, and proposed a comparison which takes the lifetime of these savings into account. The study is based on available official information. Thus, before presenting the obtained results, the author describes how data have been collected and harmonised, presents the comparative analysis and discusses the lifetime measurement issue