New AECOM office is a 5-star NABERS

The Perth office of technical services consultancy AECOM, located in the General Post Office building in the CBD, has been ranked as one of the nation's most energy efficient workplaces.

The office sources 25 per cent of its power from renewable energy and uses a range of sustainability solutions including automated lighting controls, energy efficient appliances and high efficiency air conditioning.

The National Australian Built Environment Rating System (NABERS) gave the office it's highest possible 5-star rating for excellence in energy efficiency.

AECOM building engineering associate director Graham Ager said the rating was an important achievement considering the office's location in the century-old GPO building.

"After a major re-fit in 2008 to boost sustainability, our office now significantly exceeds the requirements for a NABERS 5-star rating, making it one of Australia's most energy efficient tenancies and a best practice example of energy use in heritage-listed buildings," Mr Agar said.

The NABERS rating comes after the office became the first in Western Australia to receive a 5 Star Green Star rating for its interior from the Green Building Council of Australia in 2010.

"NABERS and Green Star are very different and achieving both of these certifications shows that our building is exceptional in terms of energy consumption and office environment," Mr Agar said.