Workers assessing factory equipment

Existing Building Commissioning program

Improve your chilled water system to cut costs.

Save on Energy incentives can help you reduce your air conditioning bills and maintenance costs.

If your organization’s air conditioning costs are sky-high, an inefficient chilled water system may be to blame. Luckily, there are several options that can help you reduce your electricity bills immediately and cut down on maintenance and replacement costs over time.

The Existing Building Commissioning program for chilled water systems provides funding so you can:

  • Hire an expert to analyze the chilled water system and make recommendations for improving energy efficiency
  • Buy and install metering equipment
  • Implement recommended upgrades


How it works

There are four phases and incentives available under the Existing Building Commissioning program.

Scoping study phase

A qualified commissioning agent – or industry expert – is hired to create a Scoping Study Commissioning Report. This report provides a snapshot of your chilled water system and its performance.

The commissioning agent is hired on a contractual basis only and is not an employee.

The commissioning agent you choose must have either:

  • A commissioning certificate from the Association of Energy Engineers, the American Society of Heating, Refrigerating and Air-Conditioning Engineers, or the Building Commissioning Association; or
  • Experience as a project manager of a chilled water system commissioning project to meet either LEED or Canadian Standards Association Z318 (Commissioning of Health Care Facilities) standards, or under the IESO’s Chilled Water Plant Ongoing Commissioning Pilot. Please note that the agent must provide two letters of reference to the owner or lessee of the chilled water system.

The Scoping Study Commissioning Report will:

  • Describe your chilled water system in full and note the estimated cooling loads, electricity consumption and operating hours.
  • Propose and detail several energy efficiency measures for saving electricity while operating your chilled water system.
  • Show the estimated electricity consumption and demand savings that each measure would produce in the first year.
  • Identify the existing metering points and additional metering required for the investigation phase, and include a plan for measuring the actual electricity consumption savings and demand reduction anticipated in the next commissioning phase.

Investigation phase

A data acquisition system is installed and/or enhanced with metering points to log data from the chilled water system. The commissioning agent analyzes the results and produces an Investigation Phase Commissioning Report.

Recommended energy efficiency measures for reducing electricity consumption and peak demand of the chilled water system are included, as is a project Measurement & Verification Plan.

Implementation phase

On completion of the investigation phase, the participant commits to implementing all measures with a payback period of less than two years. Measures with a payback period of more than two years may be eligible for further incentives on implementation. The commissioning agent monitors and analyzes the results, which form the basis of the agent’s Implementation Phase Commissioning Report.

Hand-off/completion phase

A Hand-Off/Completion Phase Commissioning Report is produced by the commissioning agent. It describes the training and documentation provided to the chilled water system operators, and also includes an analysis of the yearly energy consumption and savings for your chilled water system.

Find your local program provider

Enter your postal code below to find who to contact to apply for the Existing Building Commissioning program.

Note that some postal code areas are served by more than one hydro company.