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Ventilation on Demand
EastLink's innovative ventilation on demand system has reduced tunnel power usage by nearly 70%, saving 9,000 tonnes of GHG emissions annually. Audible noise from the ventilation stacks has halved.
The new system won EastLink the ITS Australia National Industry Award 2018, and was a factor in GRESB awarding EastLink the top 5-star sustainability rating in 2019.
![](/img/asset/YXNzZXRzL2xlZ2FjeS9uZXdzL1Bvd2VyX3VzYWdlX2NoYXJ0LmpwZw==/Power_usage_chart.jpg?p=2xl&s=5403a0baf46e4203d4e7c6ca14888715)
The power usage chart for the EastLink tunnels shows the nearly 70% reduction in power usage that was achieved when the ventilation on demand system was fully activated in mid March 2018:
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The ITS Australia National Industry Award 2018 with the EastLink tunnels behind:
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