Clear answer, explained.
The payback on any given ECM depends on three factors: the size of the saving (kWh and demand reduction), the cost to implement, and the applicable incentive funding that reduces net implementation cost. The audit quantifies all three for each identified measure, giving facility managers and CFOs the data to prioritise implementation by financial return.
Controls and BAS optimisation measures — reprogramming scheduling, recalibrating sensors, correcting setpoint drift — typically require minimal capital and deliver immediate savings. These often pay back within months. LED lighting retrofits deliver larger absolute savings but require capital for fixtures and installation; IESO saveONenergy incentives reduce net cost and improve payback. HVAC measures involving equipment replacement are the most capital-intensive and carry longer payback periods, though aging equipment with high maintenance costs may make earlier replacement financially compelling.
For a distribution facility audit in Ontario, five ECMs delivered $107,320 in annual savings. Individual measure paybacks ranged from under one year for controls measures to three to five years for HVAC upgrades. The audit presents each measure's payback individually — allowing the client to implement the fastest-returning measures first and sequence capital-intensive measures around budget cycles and incentive program timelines.
What this means in practice.
- Controls and BAS optimisation measures often pay back in under one year — minimal capital, immediate savings
- LED lighting retrofits typically pay back in one to three years with saveONenergy incentives applied
- HVAC equipment upgrades and replacements range from three to eight years depending on equipment condition and incentive funding
- Each ECM is presented with its own payback calculation in the audit report
- Fastest-returning measures can be implemented first — sequencing by ROI is standard practice
- On a completed distribution facility audit, five ECMs delivered $107,320 in annual savings at varied payback periods
Best-fit environments.
- You have received an audit report and want to understand how to prioritise implementation by financial return
- You are a CFO evaluating which conservation measures to approve in the current capital budget cycle
- You want to understand which ECM types typically deliver the fastest payback before commissioning an audit
- You are sequencing a multi-year efficiency program and need to plan around budget cycles and incentive program timelines
