NorthConnex is committed to sustainable and responsible operations. One of our sustainability initiatives include the use of 5,500 LED lights to reduce energy consumption and our carbon footprint.

ISCA Sustainability Rating and Environmental Awards

‘Leading’ Infrastructure Sustainability Design rating

In October 2016, NorthConnex was officially awarded a ‘Leading’ Infrastructure Sustainability (IS) Design rating by ISCA. NorthConnex was the first road project to receive the highest rating.

Environmental Excellence from (IECA) Australasia

In 2018, the NorthConnex project received a Highly Commended Award for Environmental Excellence from the International Erosion Control Association (IECA) Australasia for its work in relocating a section of Cockle Creek.

Environmental Best Practice

The project received a Gold International Green Apple Award for Environmental Best Practice from the Green Organisation in November 2018. This international award recognised the dedication and hard work invested to ensure the protection of Cockle Creek, as well as broader environmental and sustainability achievements.

Over one hectare of vegetation saved

Through redesign and changes to the construction footprint, the project has successfully saved more than one hectare of threatened vegetation, including 742 individual Epacris on the Hills M2 Motorway.

LED Lights

NorthConnex will use more than 5,500 LED lights in place of traditional high-pressure sodium (HPS) or fluorescent lighting technology to reduce electricity consumption by 18 per cent annually. This innovation equates to an overall reduction in carbon emissions of approximately 350 tonnes during the first year of operation alone.

Variable Speed Drive Fans

The installation of variable speed drive (VSD) fans allows the speed of the fans to be adjusted based on the number of cars travelling through the tunnel. Using VSD fans instead of direct online fans representing a total energy savings of 44 per cent.

Air Quality Improvement

The NorthConnex project will reduce the total amount of vehicle emissions discharged into the atmosphere by providing a free-flowing motorway alternative to Pennant Hills Road. Improvements in air quality will be achieved by:

  • Avoiding stop-start traffic congestion. Heavy vehicles will emit up to 80 per cent less carbon monoxide, 70 per cent less oxides of nitrogen and 70 per cent less particulate matter.
  • Reducing overall travel times along the motorway.
  • Managing and dispersing vehicle emissions through an effective ventilation system that does not re-circulate air from one tunnel to another.
  • Specific ventilation modes developed to manage breakdown, congested and emergency situations.
  • Designing the road with flat gradients to help reduce vehicle emissions.
  • Increasing the height of the tunnel to prevent incidents blocking the tunnel.