Net zero, sustainability and resilience

Development of this dataset will explore other ways to measure related elements of the efficient city such as waste and recycling, as well as social cohesion and continue to track issues related to urban heat island.

Metropolitan and strategic centres

Centres vary in size and role depending on their activity mix, scale and location. The Six City Region Plan includes a four-level hierarchy of centres – metropolitan, regional city, strategic and local centres. 

Metropolitan centres provide a concentration of knowledge jobs and a wide range of goods and services. The metropolitan centres of Greater Sydney comprise the Harbour CBD (which includes North Sydney CBD), Greater Parramatta and the Western City metropolitan cluster of Liverpool, Greater Penrith, Campbelltown–Macarthur and the planned Badgerys Creek Aerotropolis. The metropolitan centres for the Six City region also include Newcastle, Wollongong, Liverpool, Campbelltown-Macarthur, Gosford and Macquarie Park. 

Strategic centres provide intensity of activity. These include retail, commercial, office and community facilities, cultural venues and events. They are all are serviced by utilities, public transport, education and health infrastructure.

Megatonnes of emissions

Megatonnes (Mt) of scope 1 greenhouse gas emissions (CO2-e) by city 2019

In 2019, Scope 1 greenhouse gas emissions for the Six Cities Region were 65 Megatonnes (Mt) CO2-e. CO2-e or carbon dioxide equivalent, is the standard unit for measuring greenhouse gas emissions. The unit expresses the impact of each different greenhouse gas in terms of the amount of CO2 that would create the same amount of atmospheric warming.

Megatonnes (Mt) of residential greenhouse gas emissions (CO2-e) by sector 2019

Greenhouse gas emissions (CO2-e) from Transport and Electricity Generation represented the highest sector of emissions across the Six Cities Region in 2019. Emissions were from transport were highest in the Western Harbour City followed by the Central River City and the Western Parkland City.

Compared with other Cities, emissions associated with energy generation were much higher in the Lower Hunter and Greater Newcastle City and the Central Coast City. Emissions associated with waste consumption were higher in the Western Parkland City and the Lower Hunter and Greater Newcastle City when compared with other cities.

Number of days with temperatures over 35oC since 1994

Over the 2020-21 summer, Penrith in the Western Parkland City experienced 15 hot days over 35 degrees. During the same period, Parramatta in the Central River City had eight hot days and Williamtown in Lower Hunter and Greater Newcastle City had seven hot days. In comparison, Bellambi in the Illawarra-Shoalhaven City, Observatory Hill in the Eastern Harbour City, and Gosford in the Central Coast City experienced only two to four hot days.