Sustainability

Barangaroo aims to be sustainable today and for future generations. Its commitment is to be carbon neutral and water positive, to create zero waste emissions and contribute to community well-being.

Barangaroo is one of the most exciting urban renewal projects in the world today. When completed, Barangaroo aims be the first precinct globally to be carbon neutral. Every decision made by the Barangaroo Delivery Authority, on behalf of the NSW Government, has sustainability top of mind. The Authority and its development partners work with sustainability leaders from around the world to help Barangaroo reach its goals.

In 2009, before construction of the precinct had begun, the NSW Government committed Barangaroo to the Climate Positive Development Program. Established under the Clinton Climate Initiative, the program later became part of C40 Cities, a network of mega-cities working to address climate changes. Barangaroo is one of only 19 projects around the world chosen to be part of the C40 Cities network.

Being climate positive under the C40 program has four key requirements:

  1. Reducing and then offsetting all the energy used on the site
  2. Recycling and exporting more water than the drinking water that is imported
  3. Responsible waste management, diversion from landfill and zero waste emissions
  4. Delivering community wellbeing.

To become Australia’s first large-scale carbon neutral precinct, Barangaroo includes centralised infrastructure such as Sydney Harbour water cooling, embedded electricity networks, recycled water treatment plants and on-site renewable energy generation.

To facilitate the outcomes identified in the C40 commitment, the Authority has included robust contractual mechanisms in all Project Development Agreements. The Authority is working collaboratively with developers to ensure sustainability targets are implemented and achieved, both during construction and throughout operations over all 99-year building leases.

What makes sustainability at Barangaroo special?

Development agreements ensure the entire precinct remains in public ownership, with the buildings and infrastructure on 99-year leaseholds.

An Estate Levy in every lease and other governance arrangements ensure long-term sustainability, with cascading obligations in place from the NSW Government through to development partners, building owners, tenants and sub-tenants.

To maximise on-site efficiencies large-scale centralised infrastructure is required. The Authority has partnered with developers to establish Sydney Harbour water cooling, embedded electricity networks, recycled water treatment plants and on-site renewable energy generation.

External agencies, contractors and organisations at Barangaroo are required to manage their activities with a view to achieving these sustainability goals. Typically, this will include:

  • Every building has contracted annual targets for operational greenhouse gas emissions
  • Reducing construction waste going into landfill by 97%, by sorting and separating waste and recycling or reusing
  • Planting 100% native plants in Barangaroo Reserve
  • Using recycled water for flushing toilets through to irrigation and fire sprinklers
  • Ensuring retailers and suppliers avoid packaging, reduce waste and offer healthy food choices from locally and sustainably produced food
  • Providing and promoting access to and facilities for walking, cycling and passive and active recreation through design for active living and healthy lifestyles.

100% native plants

More than 75,000 native trees and shrubs have been planted at Barangaroo Reserve

1. Carbon neutral

All buildings at Barangaroo, regardless of how large or small, contribute to carbon neutrality through annual greenhouse gas reporting and financial contribution towards off-site renewable energy and carbon offsets.

The energy used in the public domain and for waste water recycling is offset by the solar energy which is generated on site. The solar power station is spread across the rooftops of the various buildings.

International Towers Sydney, the three commercial towers at Barangaroo, have achieved the highest level of green building certification from the Green Building Council of Australia.

The towers are oriented to reduce heat gain on the western façade and they include vertical shading panels aligned to the sun’s path. The panels provide shading and reduce cooling needs.

Cost effective and energy efficient air conditioning is delivered to all the buildings in the southern precinct through a District Cooling Plant, which also uses Sydney Harbour water for heat rejection.  This saves on energy consumption by operating one centralised cooling system rather than separate systems for each building. The system also avoids the use of drinking water drawn from Sydney's dams to reject heat from the buildings. The sea water passes through a series of screens, filters and strainers to protect and filter out marine life, is pumped through electric chillers where it absorbs waste heat, and then returned to the harbour.

The towers include vertical shading panels aligned to the sun’s path.

The panels provide shading and reduce cooling needs.

2 .Water positive

Barangaroo is a ‘water wise’ precinct. When completed, the whole precinct will be capable of exporting more recycled water than it uses.

The use of water efficient appliances, using captured rainwater and treated water for toilet flushing, irrigation, wash down and fire suppression are major features of the entire Barangaroo development.

In the southern commercial and retail district waste water is treated and recycled water produced from a central plant. The wastewater recycling system is capable of processing one million litres of wastewater each day.

Beneath Barangaroo Reserve is the Cutaway cultural space and two levels of car park. And beneath all of this is a leading-edge integrated water re-use system. It provides for the capture, treatment, storage and reuse of seepage and storm water for the irrigation of the Reserve.

The two tanks beneath the re-created headland - an enormous 1,200m3 rainwater tank and 180m3 seepage tank - are up to 17 metres below sea level.

3. Zero waste emissions

Barangaroo aspires to deliver zero net greenhouse gas emissions generated through the transport and treatment of waste from the precinct. At Barangaroo, all food, office, commercial and industrial waste is treated and managed using methods that are climate neutral.

By using innovative waste minimisation, collection and recycling processes, more than 80% of operational waste from residential and commercial buildings is diverted from landfill. The waste contractor that services these properties is committed to the Climate Positive Waste Principles to ensure there are zero net emissions created.

4. Community well-being

Barangaroo is a 'city within a city'. It is a place for people to work, live, socialise or connect with Sydney’s Aboriginal and maritime history as well as contemporary Aboriginal culture.

It is opening in stages and by mid-2017 there were already 16,000 people working in Barangaroo’s office towers. When the entire project is complete, Barangaroo will accommodate 23,000 office workers and some 3,000 residents as well as shoppers, diners and visitors.

More than 50% of Barangaroo will be dedicated public space - and this does not include its roads, laneways and footpaths.

A key feature of Barangaroo is its connectedness to the rest of Sydney’s central business district via the new Barangaroo Wharf, Wynyard Walk tunnel and two new pedestrian bridges over Hickson Road.

Barangaroo will also feature on the new Chatswood to Bankstown Metro line, with the station at Nawi Cove expected to open in 2024.

It is anticipated that most people coming to Barangaroo will use public transport, walk or cycle.

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