AI-powered chiller plant optimization delivered a 33.4% efficiency uplift and $243,880 in verified annual energy savings across one of Australia's busiest international airports.
The Challenge
Sydney International Airport serves over 3 million passengers per year, operating HVAC systems that must maintain consistent comfort conditions across terminals, gates, and support facilities regardless of flight schedules, weather events, or occupancy surges.
The airport's central chiller plant was operating under conventional fixed-schedule sequencing, unable to adapt to real-time demand fluctuations. The result was significant over-capacity operation during off-peak periods and sub-optimal plant efficiency across the full load range — translating to avoidable energy costs and carbon emissions at scale.
Airport HVAC plants run continuously across highly variable demand conditions — presenting one of the largest and most complex optimization opportunities in the built environment sector.
Building Profile
| Facility Type | International airport — terminals and support facilities |
| Annual Passengers | 3 million+ |
| Location | Sydney, New South Wales, Australia |
| Implementation Date | March 2023 |
| Deployment Method | Written directly into BMS |
| M&V Protocol | IPMVP-aligned M&V Verified |
| Carbon Credit Value | AUD $165,230 per annum |
The Exergenics Approach
Exergenics deployed its AI Digital Twin platform to model the airport's full HVAC demand profile and deliver continuous optimization — with control logic written directly into the existing BMS, requiring no additional hardware or operational intervention.
Exergenics built a high-resolution AI model capturing the airport's complex demand drivers — flight schedules, terminal occupancy, ambient conditions, and seasonal variation — enabling precise forecasting of cooling load and optimal plant staging sequences.
The optimization engine continuously computes the most efficient chiller combination, condenser water temperature targets, and cooling tower operation — dynamically adapting to real-time occupancy and ambient conditions to minimize energy per unit of cooling delivered.
Optimization algorithms were written directly into the existing BMS in March 2023 — enabling fully autonomous operation without ongoing manual intervention. All savings were subsequently verified through M&V and are generating ongoing carbon credit value.
Verified Results
The Sydney International Airport deployment delivered the highest efficiency uplift in the Exergenics portfolio — with verified savings across energy, carbon, and financial dimensions, plus additional carbon credit value.
| Outcome | Verified Result |
|---|---|
| Efficiency Uplift | 33.4% improvement in chiller plant efficiency |
| Annual Energy Savings | 890,094 kWh per year |
| Carbon Emissions Reduced | 1,377 tCO₂e per annum |
| Annual Cost Savings | $243,880 per annum (energy) |
| Carbon Credit Value | AUD $165,230 per annum |
| Total Annual Value | $243,880 energy + AUD $165,230 carbon credits |
| Implementation Date | March 2023 — written directly into existing BMS |
| Capital Expenditure | $0 — software-only deployment |
Exergenics delivers verified HVAC energy savings for airports, hospitals, commercial towers, and entertainment facilities — with no capital expenditure and no operational disruption.