Central Plant Simulation Software
A calibrated digital twin of your central plant. Used first to cut 5–35% of its energy through the BMS you already own, then to answer every question about that plant that used to take a design day and a guess.
Chillers, pumps and cooling towers account for 25–50% of a commercial building’s electricity. Each machine has its own efficiency profile, and every profile depends on what the others are doing. The setpoint that is right for one chiller at one load and one wet-bulb temperature is wrong an hour later.
The plant is governed by thermodynamics, so there is an optimal way to run it. Finding that optimum across millions of combinations is a simulation problem, not a rule-of-thumb problem. That is what the software does, from the data the plant already logs.
How the calibrated digital twin worksControls optimisation is where most engagements start and where the savings come from. The same calibrated models then answer the questions a plant has never been run to answer: what a runtime target costs in energy, which chiller to buy, what a central plant should be sized to, and what the emissions look like over twenty years.
Each option includes the one before it. The Feasibility Study is credited in full against any option purchased within 90 days.
Priced per kilowatt of refrigeration (kWr) of installed plant capacity. Request a price list
Retrofit Analysis, Trade-Off Simulation, Central Plant Design and Lifetime Emissions are scoped from the same calibrated model and quoted per study. Continuous optimisation is available as an annual subscription.
A plant with a basic BMS and no trending can still be optimised. Each stage is a complete engagement: we model the plant from whatever exists today, deploy strategies the BMS can run now, and define exactly what to capture next. Targets are cumulative, for total chilled water plant energy.
No trend data, no documents. One structured survey of the plant room: nameplates, pumps, towers, piping. A like-for-like model matched from thousands of chillers already on the platform.
Still no trending, but the paperwork survives: functional descriptions, O&M manuals, as-builts and OEM part-load data. The model matches your actual machines.
The thermal side is trended: temperatures and flow or chiller load. Enough history to build the cooling load profile and stage against the real load.
Thermal and electrical sides trended for six months or more, chiller power above all. A calibrated twin, an energy baseline, and savings verified rather than estimated.
Earlier stages are simulation-based estimates; only the final stage is independently verified.
All Exergenics work is remote. Implementation of control changes is by your incumbent BMS contractor, outside normal hours, with every existing safety and interlock retained.
Verified reduction against a weather and load adjusted baseline. Further client names available on request.
Read the case studiesRecognition: CIBSE Building Performance Awards 2026, shortlisted, Product or Innovation of the Year, Building Performance Evaluation. CIBSE Building Performance Awards 2025, Best Digital Innovation, Project Delivery. AIRAH Awards 2024, Excellence in Innovation and Excellence in Sustainability.
Up to 35% of chilled water plant energy. Published sites range from 5.3% to 33.4%, each verified to IPMVP Option B against a weather and load adjusted baseline.
No. The work is software only that is programmed natively into the BMS and is air-gapped. Nothing is installed: servers, controllers, sensors and the BMS itself all stay as they are.
Your internal controls technician or incumbent BMS contractor, in the existing BMS, with every safety and interlock retained. Exergenics witnesses remotely and does not write to the BMS.
Yes. Every safety interlock, constraint, minimum and maximum limit, and rate-of-change safety parameter remains in place. Optimised setpoints work inside those limits, never around them.
Using historical telemetry data, strategies can be produced with as little as a few months of data. In an ideal case, twelve months enables Exergenics to confidently produce a strategy that is fully optimised year round. Historic temperature, pressure, energy and flow rate data at 5 or 15 minute intervals from the chillers, pumps and towers is all that is required, though optimised strategies can be produced with even a subset of these data.
That makes it easier. In many cases clients simply provide Exergenics read-only access and we pull the data ourselves, with zero effort required from the site team.
Yes. A plant with a basic BMS and no trending can still be optimised. A site walk alone unlocks dynamic condenser water temperature reset. Earlier stages are simulation-based estimates. For greenfield sites, Exergenics can produce an optimised strategy simply utilising design documentation and projected load profiles.
Setup takes about a month, with the calibrated twin in weeks 6–10 and savings verified at month 12. Average payback is around 18 months, with a 6–24 month range across published sites. With utility incentives it is generally under 12 months.
Yes, depending on the country and region. In the US, many sites qualify for utility programs, and with incentives the payback is often under 12 months. Exergenics handles all the paperwork and M&V submissions.
Yes. Every recommendation comes from one calibrated model of the plant, broken into modules that are each independently useful and independently verified. A site can adopt one, prove it, and decide the next step from its own data. Each phase is verified before the next is deployed. Later phases reuse the model and data already in place, so each one reaches savings faster than the first.
No. Setpoints are published as readable logic in a site-specific functional description. The strategy is yours to keep.
Per kilowatt of refrigeration (kWr) of installed plant capacity. The Feasibility Study is credited in full against any option purchased within 90 days. Request a price list
The twin is proven against the plant’s own data to ASHRAE Guideline 14, or calibration fees are refunded in full.
A desktop forecast from your plant’s own BMS data. Credited in full against any option purchased within 90 days.
Priced per kilowatt of refrigeration (kWr) of installed plant capacity. Request a price list
What you get