Total savings of $40,470

per annum were achieved

Grand Mariner Resort

Location: Paradise Waters, Queensland, Australia
Application: 75kW (90HP) Condensed Water Pump (Cooling Tower)
Run time: 24/7/365
Energy Saving: ~65%
Motor/Pump: TECO motor direct coupled with Southern Cross Pump

The Grand Mariner Residential Resort, Gold Coast’s tallest building from 1992-2002, is a 42 storey luxury apartment complex located in idyllic “Paradise Waters”, Queensland.

The building operates 2 x 75kW condensed water pumps which drive the air conditioning system for floors 21-42, occupying more than 200 apartments.

The original energy demand for Pump No. 1 was some 67kW/hr as a continuous load. After the installation and commissioning of FW’s Intelligent Inverter System, this load has been reduced to some 23kW/hr to adequately service the air conditioning requirements, equating to an approximate saving of 65%.


Pump 1 – Original Consumption: 67kW

Per annum: 586,920 kWh

Energy Cost @ 10.5 cents per kWh: $61,626.60

Pump 1 Post FW Installation: 23kW

Per annum: 201,480 kWh

Energy Cost @ 10.5 cents per kWh: $21,155.40

Total Savings per annum: $40, 470.80

The energy savings for Pump 1 will vary slightly depending on demand during hotter and cooler months. Notwithstanding the weather condition, the capital payback (ROI) period on the pump motor controller was achieved some 6 to 7 months after installation. With escalations in energy and water tariffs occurring every 12 months, the total energy and financial savings will increase signifcantly.