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What does a commercial energy audit include?

A commercial energy audit includes utility data analysis, a full site walkthrough, assessment of HVAC, lighting, and building controls, and a ranked list of energy conservation measures with estimated savings, implementation costs, and payback periods.

UpdatedJune 2026
Read time4 min read
CategoryCommercial Energy Audits
Reviewed byGI Engineering
Clear answer

Clear answer, explained.

A commercial energy audit begins with 12–24 months of utility interval data review — establishing the facility's actual consumption baseline across electricity and, where applicable, natural gas. This data is analysed against weather records and operating schedules to identify demand patterns and load drivers before anyone sets foot on site.

The site assessment covers the building envelope, HVAC systems, lighting, building automation and controls, compressed air, and process equipment where relevant. Thermal imaging, equipment logging, and control system review identify inefficiencies that utility data alone does not surface.

The output is a facility-specific baseline model and a ranked list of energy conservation measures (ECMs), each with estimated annual savings, implementation cost, and payback. The report also identifies applicable incentive programs — including NRCan IEM and IESO saveONenergy — and, where applicable, documents the baseline required for solar feasibility analysis.


Key points

What this means in practice.

  • Utility interval data review covering 12–24 months of actual consumption
  • Full site walkthrough covering HVAC, lighting, controls, compressed air, and process equipment
  • Thermal imaging and equipment logging to identify hidden inefficiencies
  • Facility-specific baseline energy model built from actual operating data
  • Ranked list of energy conservation measures (ECMs) with savings, cost, and payback for each
  • Incentive eligibility summary covering NRCan IEM, IESO saveONenergy, and other applicable programs

When this applies

Best-fit environments.

  • Your facility has high electricity costs but no clear picture of where they are coming from
  • You are planning a capital investment in HVAC, lighting, or solar and want to right-size it
  • Your facility needs to qualify for NRCan or IESO saveONenergy incentive programs
  • You are preparing BEPS compliance documentation and need a verified energy baseline

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