181 Miller Street, North Sydney

3 May 2012 – Case study: WT Sustainability wanted to raise the bar when it aimed for a minimum six star NABERS energy rating under the CitySwitch program when it planned its new offices at 181 Miller Street, North Sydney.

Director of WTS Stephen Hennessy said: “”WTS is in the business of delivering energy and sustainability advice to a range of clients, obviously we need to practice what we preach, but the solutions that we have adopted are not ‘out there’.

“WTS have taken existing technologies and applied them properly, and we would encourage others to set themselves this new target,” Mr Hennessy said.

For the CitySwitch team, it is understood that this was the first commitment to six star rating.

The WTS tenancy is is light and bright thanks to energy efficient E1 lighting and the energy savings are achieved with no loss of amenity, Mr Henssessy said.

“Most people walking into our office would be hard pressed to see how we are achieving such extraordinary energy results. When we explain how our energy use is half that of a five star tenancy they can’t believe it, they just don’t expect super efficient offices to be so welcoming.”

The E1 lighting is used throughout much of the building and was provided by the landlord, Local Government Super, an organisation that has a strong environmental focus., Mr Hennessy said.

The company has added microwave occupancy light level sensing, with very short sensing times.

It  installed a timed power circuit to the work stations such that power to most outlets is cut out of hours thereby eliminating standby loads.

Computers are off the shelf efficient laptops and the screens are large LED ones that make it easy to review documents side by side, so saving on printing costs.

The colour printer is an LED multifunction device that costs no more than comparable 32 page per minute machines, “and yet it uses up to 75 per cent less energy.”

Mr Hennessy said the building owner’s metering provider, Commercial.Energy Services, has installed sub-meters that could be accessed via a web interface

“These are very useful, not only do they give us the assurance that our energy use is on track to deliver a six star result, but they have helped us identify even greater savings.

“WTS has certainly shifted the energy efficiency goalposts, but they have also demonstrated that better energy performance is well within most organisation’s grasp. Let’s see how many CitySwitch signatories rise to the challenge,” he said.

A CitySwitch spokeswoman said “We’re thrilled that signatories like WTS continue to drive up industry standards, showcasing best practice.” She said the program now had several other signatories who have  achieved a six tar rating after the NABERS scale had been expanded to incorporate a 5.5 and six star rating.

Article compiled with the assistance of material supplied by WT Sustainability