In May 2018, Sydney Lord Mayor Clover Moore wanted new commercial developments to reach a 5.5 NABERS (National Australian Built Environment Rating System) Energy Star Rating in a drive towards zero carbon emissions in Sydney CBD. But, how much of an impact will this make on Sydney's CBD area from a environmental sustainability perspective?
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The 2019 National Construction Code (NCC) is now imminent and if it seems like it’s been a while since the last major release, it has been a long but welcome 3 years since the Australian Building Codes Board shifted to triennial updates.
The proposed changes include a complete rewrite to the way the building fabric is assessed under Section J (Energy Efficiency). The Australian Building Codes Board (ABCB) committee working on this update claim to have “rewritten Section J in its entirety"  which is powerfully showcased through the 30% average increase to the energy efficiency stringency requirements.
So what does this mean to you, as a builder or an architect? How is this going to affect your project and does this mean an increased financial strain on your budget to comply with these new energy efficiency targets? In short it depends what climate zone you are building and to what extent how much renewable energy mix is within your local energy supply. The below table indicates the expected construction cost reduction or increased to comply with the new NCC based on your climate zone refer map below.
Dr Paul Bannister – Reviewer for Energy Efficiency in Commercial Buildings DTS Modelling Report 2018 by Energy Action