Sample Simulation Replay
See price-responsive control in action: a full plant replay at 5-minute resolution against real wholesale prices.
This sample shows a wastewater treatment plant with a price responsive controller managing the setpoint of the effluent reservoir in response to the actual National Electricity Market spot prices shown by the orange trace on the 7-day rolling graph at the top right. The WWTP inflow trace is similarly shown in the blue trace over the same 7-day rolling window highlighting the daily diurnal variation and the response to wet weather in the catchment. Weather conditions are shown in the top left corner, including cloud cover impacting solar PV output. The control scheme makes an operating decision every five minutes: when to pump, when to hold, and how the stored volume is positioned against price.
Use the Speed slider and Pause button inside the simulation. The cost table (bottom-right) compares four scenarios in real time:
- No Control / Retail: pumps run on level control, paying your retail tariff
- No Control / Spot: same fixed operation, paying the 5-minute spot price
- Control / Retail: price-responsive pumping, still on retail time-of-use
- Control / Spot: price-responsive pumping with spot exposure, the biggest saving
What to look for
- Load shifting: when the spot price spikes, the pumps ease back and the reservoir fills; when price drops, pumps run harder and the reservoir draws down.
- No lost performance: reservoir levels stay inside their operating bands because the control scheme enforces the hard constraint against overflows, irrespective of the price-responsive controller.
- The bill tells the story: the gap between No Control and Control is the quantified saving available before any capital is committed.
The same engine that powers this replay is used to design and tune a live scheme: built from your plant’s real constraints, pump curves and operating limits, then run against a defined simulation duration to assess the long-term performance. See how the control scheme works and how a scheme is delivered.