What is an Energy Audit?

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The term energy audit appears to refer to two distinct things: An energy audit is the process of having a professional energy auditor assess your building for energy savings opportunities. The term energy audit also is used to refer to the result of the energy assessment process, the energy audit report. We will try to keep these terms separate by referring to the report as an “energy audit report.”An energy audit report is a carefully thought out plan, which, if followed, will lead you to reduced energy costs. Every building is different, and each contains different opportunities which can reduce energy usage. This is why every different building requires its own unique energy audit.

During the energy audit, an energy auditor will visit your site and interview your facility manager, inspect your lighting, air conditioning, heating and ventilation equipment, controls, refrigeration, air compressors, water consuming equipment, and anything else that is using energy. Depending on the type of the audit, the auditor may take measurements of temperatures, pressures, light levels, power draw, and other things.

An energy audit report typically contains a description of the building’s existing energy consuming equipment, an energy balance and most importantly, a presentation of feasible energy conservation measures (ECMs). Each of these measures are developed so that the energy audit report includes:

  • a description of the existing conditions
  • a description of the proposed ECM
  • expected annual savings associated with the ECM
  • expected cost to implement the ECM
  • simple payback and/or other financial measures, such as return on investment or life cycle savings

Some of the ECMs identified in the audit will take decades to pay for themselves, while others will start paying for themselves within months. Once you have the audit in hand, you can make good decisions as to where to invest your energy efficiency money.

Some of the sections of an ASHRAE Level 2 energy audit are presented below:

Facility Summary: A description of the building and its energy consuming equipment

Facility Summary: A description of the building and its energy consuming equipment

Facility Summary: A description of the building and its energy consuming equipment

Energy Balance:  A breakout of facility energy usage into end uses.

Energy Balance: A breakout of facility energy usage into end uses.

Energy Balance: A breakout of facility energy usage into end uses.

Written Descriptions of Each Energy Conservation Measure Example Page 1

Written Descriptions of Each Energy Conservation Measure Example Page 1

Written Descriptions of Each Energy Conservation Measure Page 2

Written Descriptions of Each Energy Conservation Measure Example Page 2

We investigate and quantify energy savings potential in:

  • Lighting systems
  • HVAC Systems and Controls
  • Compressed Air Systems
  • Renewable Energy Applications
  • Electric Motors and Drives
  • Process Systems
  • Steam Systems
  • Heat Recovery
  • Building Envelope Upgrades
  • Switching Utility Providers or Utility Rates