It is a macroeconomic measure of the energy efficiency within the economic system of a country. It is calculated as energy units per gross domestic units (GDP). Its reduction means a better environmental performance because it measures the tendency of an economy to consume principally renewable resources (keeping constant the level of pollution). This indicator does not provide a measure of the pressure on the environment coming from intermediate and final energetic uses, nor does it give any information on the type of energy consumed or about the combustible used for its production. The unit of measure of the energy intensity, widely used by research institutes, is the TEP (tons of oil equivalent) per million euros

Editor: Claudio DICEMBRINO