Case Study: Commercial / Retail
101 Miller Street, Sydney

Cogent Energy has designed and installed a state of the art cogeneration plant at 101 Miller Street, North Sydney. This building is the largest commercial building in North Sydney and comprises premium office space and retail shops. This is the largest cogeneration plant in a commercial tower in Australia.

Building Owner:

Mirvac and Eureka Funds Management

Location:

North Sydney

Building Description:

Commercial complex – premium offices & retail plaza

Building Size:

40,000 sqm Commercial, 10,000 sqm retail

Plant Operational Date:

In operation since 1 November 2008

Cogeneration Configuration

The 101 Miller Street cogeneration plant comprises of 2 x 1,166 kW MTU Series 4000 cogeneration engines that are connected in parallel to the grid. Each engine is coupled to a 750 kW Thermax exhaust absorption chiller. The absorption chillers are fully integrated into the building’s chilled and condenser water systems.

The plant is set up to operate either in grid parallel import or island mode and operates automatically during the peak and shoulder demand periods or during grid outages as emergency backup.

Plant Capacities

Peak Electrical:

2,332 kW at 0.8 power factor

Peak Cooling:

1,500 kW

Energy Efficiency:

70% Thermal Efficiency (estimated)

Benefits

Reliability:

Highly reliable cogen solution with grid parallel import

Energy Efficiency:

5 star NABERS and 5 star Green Star

Backup:

Emergency Backup provided

Sustainability:

Estimated saving of up to 6,000 tonnes of CO2 per annum.