Energy Audit is a vital link in the entire management chain. The energy manager, while proposing various courses of action and evaluating their consequences, requires a detailed information base to work from energy audit attempts to balance the total energy inputs with its use and serves to identify all the energy streams in the system and quantifies energy usages according to its discrete function.
An Energy audit is an effective tool in defining and pursuing comprehensive energy management programs. It has a positive approach aiming at continuous improvement in energy utilization in contrast to financial audit which stresses to maintain regularity. Energy audits provide answers to the question – what to do, where to start, at what cost and for what benefits?
Energy audit helps in energy cost optimization, pollution control, safety aspects and suggests the methods to improve the operating and maintenance practices of the system. It is instrumental in coping with the situation of variation in energy cost availability, reliability of energy supply, decision on appropriate energy mix, decision on using improved energy conservation equipment, instrumentations and technology.
It has been established that energy saving of the order of 15 to 30% is possible by optimising use of energy by better housekeeping, low cost retrofitting measures and use of energy efficient equipment at the time of replacements. Indian industry consumes more energy as compared to its counter parts in the developed countries.
The energy audit provides the vital information base for overall energy conservation program covering essentially energy utilization analysis and evaluation of energy conservation measures.
It aims at:
Assessing present pattern of energy consumption in different cost centers of operations
Relating energy inputs and production output
Identifying potential areas of thermal and electrical energy economy.
Highlighting wastage in major areas
Fixing of energy saving potential targets for individual cost centers
Implementation of measures of energy conservation and realization of savings.
The overall objectives of the Energy Audit are accomplished by:
1. Identifying areas of improvement and formulation of energy conservation measures requiring no investment or marginal investment through system improvements and optimization of operations.
2. Identifying areas requiring major investment by incorporation of modern energy efficient equipment and up-gradation of existing equipment.