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Sydney CBD and South East Light Rail

This project by Transport for NSW (TfNSW) has achieved a leading v1.2 As Built IS Rating.


The CBD and South-East Light Rail (CSELR) has been delivered by the ALTRAC Light Rail Partnership (ALR) consisting of ACCIONA Infrastructure Australia Pty Ltd (Acciona) and Alstom Transport Australia Pty Limited (Alstom), on behalf of Transport for NSW. The CSELR project consists of: 

i. the design, construction, manufacture, testing and commissioning of:  
  1. a new light rail system to service the Sydney CBD and south east Sydney running from Circular Quay to Central Station via George Street, and on to Kingsford and Randwick via Surry Hills and Moore Park. The CSELR includes Light Rail Vehicles (LRVs), CSELR Stops, terminus facilities, interchanges and facilities for the maintenance and stabling of LRVs;
  2. public domain works, including a pedestrian zone in George Street from Hunter Street to Bathurst Street; and
  3. adjustments to existing public roads, existing Utility Services and private properties that are affected by the construction of the CSELR.
ii. the testing and commissioning of the CSELR.

The CSELR is an innovation driven and sustainability focused project that aims to alleviate road congestion, create open space and promote a more sustainable commute. The inherent sustainability benefits of the project are realised through the diversion of less sustainable or efficient travel (including buses and cars) to light rail, as well as facilitating increased cycling, walking and other public transport use within the project corridor. The CSELR is a fully operational 12km light rail network for Sydney that includes 19 stops and extends from Circular Quay to Moore Park via Central and on to Randwick and Kingsford.

The CBD and South East Light Rail is an innovation driven and sustainability focused project that alleviates road congestion, creates open space and promotes a more sustainable commute.


Rating Highlights

The project achieved full points in the innovation category with 4 Australian first innovations. These included the installation of a geothermal air-conditioning system, a regenerative braking system, an aesthetic power supply system in the CBD and the Citadis Permanent magnetic motors.
High Cross Park substation has been designed and built as an underground substation and includes an innovative underground geothermal air conditioning system to minimise potential impacts to significant trees, cultural and heritage items and maintains the park as a recreational area for the community. During operation, this system saves 15MWH of energy per annum which is the equivalent of saving 12.6 tonnes of carbon each year when compared to a conventional system. Geothermal air conditioning has the added benefit of continuously recycling water with a total lifetime reduction of 13,596kL.
A regenerative braking system called HESOP (Harmonic and Energy Saving Optimiser) has been installed to provide energy savings during operation of the light rail. Implementation of HESOP has also enabled a reduction of the number of substations required along the alignment and negates the need for braking resistors. This system works by recovering the energy produced during breaking and re-using this on project equipment such as auxiliaries, lighting, ventilation or even sold back to electricity producers. Greater than 99% of energy can be recovered by the HESOP system.
SLR was the first in Australia to design an Aesthetic Power Supply (APS) system, a ground level power supply system which provides catenary free (pole and wire free) tramway operation. APS was installed throughout the northern part of the CBD to wirelessly supply power to the trams. This technology preserves unobstructed views of the city's historic landmarks including the Sydney Town Hall and Queen Victoria Building and creates a more aesthetic public domain, promoting tourism and the economic growth of the city.
The Citadis Permanent magnetic motors have a high power to weight ratio, delivering up to a 15% energy saving with lower maintenance requirements and delivering a quieter vehicle.
During construction the project achieved >95% recycling of inert waste and 100% reuse of spoil. Significant opportunities for spoil reuse were identified during construction including resurfacing of the Moore Park playing fields and as backfill for the Olivia Gardens site. In addition, the project was commended for its attractive urban design, commitment to sustainable procurement, crime prevention measures and heritage management and interpretation across the project.



For more information about this project, please visit the TfNSW website.