Offices with NABERS ratings have on average reduced energy use by 29 per cent over eight years.

19 May 2014 — The long-term benefits of the National Australian Built Environment Rating System have been revealed for the first time, with those participating in the scheme for eight years seeing a 29 per cent reduction in energy use on average.

The results, presented at the First Joint NABERS and Commercial Building Disclosure Assessor conference earlier this month, showed that energy use in the average office building reduced by seven per cent after just two ratings, and that average savings climbed to 20 per cent by the fifth rating and up to 29 per cent by the eighth rating.

“These numbers represent the average improvement of hundreds of Australian office buildings over more than a decade,” an Office of Environment and Heritage spokesperson said.

The proportion of offices achieving high NABERS Energy ratings of 5 stars or more also increased to 19 per cent in 2013, from only six per cent in 2010, while buildings with ratings lower than 4 stars decreased to 31 per cent in 2013, down from 61 per cent in 2010.

The conference, which was attended by 130 assessors, and NABERS and Commercial Building Disclosure staff, also saw the release of the new NABERS stakeholder consultation policy, as well as a sneak preview of the preliminary outcomes of the NABERS Indoor Environment review.

The conference provided the opportunity for assessors to:

  • hear from both the NABERS and CBD teams about program updates, statistics and collaboration between the teams
  • discuss technical issues in an open forum
  • hear about market trends from key speakers from the construction and sustainability industries
  • benefit from professional development sessions lead by experts in the field of building sustainability
  • share their feedback about how service delivery could be enhanced