Energy efficiency evaluation method of low and medium voltage distribution systems to industrial consumers

Nowadays, financial constraints are those that dictate the behavior in the national economy. Thus, optimizing energy costs and increasing energy efficiency in industrial installations can be a trigger for increasing the economic performance of the industrial unit. This paper presents a minimalist but sufficient and pertinent approach for power analysis in low and medium voltage distribution installations belonging to the industrial consumers, summarizing the observations from real energy audits carried out on more than one hundred industrial enterprises in Romania during last years. The paper synthesizes the main elements required for power analysis of and proposes relevant indicators to be evaluated for a correct assessment of the energy performance measures as decision base for stakeholders to support the investment for energy efficiency projects of the industrial unit. Improving energy efficiency is not only the reason for economic growth of industrial consumers, but on macroeconomic level it is a priority of national energy policy due to its contribution to achieving power security, sustainable development and competitiveness of industry, saving primary energy resources and reducing gas emissions with greenhouse effect.