The fast pace of economic development, competitiveness, and innovativeness in industrial production, force to take actions that minimize expenditures. This is often done at the expense of product quality, but it is a highly risky idea, that can lead to loss customers. Consequently, it seems reasonable to look for other ways of saving, which will not directly affect the quality of product. It is possible to do, if a sustainable energy management which is concentrate with optimization (minimization) consumption of energy resources is introduced in the plant. It is realized by regular measurements of energy consumption, obligatory energy audits, raw materials planning and development strategy. This policy is in line with European trend to reduce energy consumption by increasing the energy efficiency of industrial processes. Nowadays, the reduction of energy intensity in the industry is not only dictated by the desire to minimize outlays and the same maximize profits, but it is obligatory activity. The paper discusses important problems of energy economy in industrial plants and shows the benefits of efficient energy use. Also included standards and regulations, that are in operation in Poland. The article points to the benefits and opportunities resulting from application of the energy management system and proposes some methods of improving energy efficiency in industrial plant.