Australian Govlink Vol 1 2014 | Page 64

60 INDUSTRIAL LIGHTING AUSTRALIAN STREETS AND PARKS POISED FOR LED INFLUX Australia, along with the rest of the world, will witness large scale conversion of conventional street and public lighting to LED technology, writes Bryan Douglas. According to a report prepared for the Commonwealth Government in 2011, there are approximately 2.28 million street lighting lamps in service in Australia, with around 33 per cent on main roads and 67 per cent on local roads. The annual energy cost of public lighting in Australia exceeds $125 million (and more than $250 million including maintenance). Street lighting is the single largest source of greenhouse gas emissions from local government, typically accounting for 30 to 60 per cent of their greenhouse gas emissions. Against this background Australia, along with the rest of the world, will witness large scale conversion of conventional street and public lighting to LED technology. Because of their longevity, controllability and above all efficiency, LEDs are now an attractive substitute for conventional mercury vapour, high pressure sodium, metal halide and linear and compact fluorescent technologies used in minor roads and other public spaces. However, while there is now suitable LED product on the market for streets and other public places, municipal authorities need to exercise caution when investing in LED technology. Govlink I Issue 1 2014 LED street lighting comes of age: Case studies Case study 1: City of Sydney The City of Sydney is in the process of replacing 6,500 conventional lights with LEDs in central Sydney, Glebe, Darlinghurst, Zetland, Pyrmont, Kings Cross, Newtown and Redfern. More than 2,600 street and park lights have already been installed. The City announced in August 2013 that it had saved almost $300,000 and reduced energy use by more than 25 per cent since March 2012. Public lighting accounts for one-third of the City’s annual electricity bill and a large part of its greenhouse gas emissions. Importantly, more than 90 per cent of people surveyed by the City said they found the new lights appealing and threequarters said the LEDs white light improved visibility. The NSW Government is following the City’s lead by encouraging 41 councils across Sydney, the Central Coast and the Hunter regions to work with Ausgrid to implement similar LED lighting projects.