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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
- 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% Overall Efficiency (estimated) compared to using grid electricity
Benefits
- Energy Efficiency:
- 5 star NABERS and 5 star Green Star
- Backup:
- Provides emergency backup if grid connection fails
- Sustainability:
- Estimated savings of up to 6,000 tonnes of CO2 per annumi
- Sustainability:
- Estimated saving of up to 6,000 tonnes of CO2 per annum.
i CO2 savings estimations are calculated based on information from the Australian Government’s National Greenhouse Accounts Factors (June 2009). Calculation methodology externally reviewed by PAE Holmes.