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In general, there are three kinds of energy audits. People nowadays, however, use a variety of terms to describe the same thing. As a result, to avoid misunderstanding, it is important to first understand what an energy audit is.

What is an energy audit?

An energy audit, according to the ISO 50002 standard, is a systematic examination of energy usage and consumption within a defined energy audit scope to discover, quantify, and report on possibilities for better energy performance.

As a result, an energy audit is also an energy evaluation. This study examines energy flows in a structure, process, or system to minimize energy input while preserving or enhancing human comfort, health, and safety. The depth of the examination determines what type of audit is ideal.

Types of energy audits

  1. Walk-Through Audit (WTA):

This audit, as the name implies, comprises a walk-through examination of a facility to discover maintenance, operational, or inadequate equipment concerns, as well as areas that require additional study. A Walk-Through Audit yields the identification of energy-saving opportunities, a qualitative review of the execution of energy-saving measures, and an estimate of the prospective energy savings. The final audit report is generally accompanied by basic remarks on the viability of a project.

  • Energy Diagnosis:

This audit includes economic calculations as well as the use of metering equipment to determine real energy usage and losses. An Energy Diagnosis produces an energy balance (a breakdown of energy uses) and a set of energy efficiency measures generated from performance or building facilities. The findings also contain financial analysis for each of the identified initiatives in order to categorize and prioritize their implementation.

  • Investment Grade Audit (IGA):

This audit provides a thorough assessment of energy use, including a quantitative examination of implementation with specific investments, operating and maintenance expenses, and an analysis of the investment model. An Investment Grade Audit produces real energy demand and an energy balance. Similarly, the audit recommends a variety of energy-saving initiatives, including the computation of energy savings and the expenditure required to implement them. This audit recommends packaged actions, as well as a funding strategy, as well as strategies for execution and savings verification.

How do I know which energy audit is right for me?

The purpose of the energy audit will determine the type of audit most appropriate for a given person. A Walk-Through Audit is required if you wish to discover possible savings to prioritize future research. An Investment Grade Audit is required if you want to invest a significant amount of money in energy-saving solutions. The Energy Diagnosis is a great option since it provides you with enough information about your facility to begin working on energy efficiency while providing a very high quality-to-price ratio. So, depending on the audit funds available, the cost and potential of the energy management opportunity, and the needed accuracy for the audit information, you may select the most appropriate type of energy audit for your purposes.

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