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Mirvac building net-zero energy housing estate

Alex Chance

House with No Bills project scaled up to 49 townhouse community in Melbourne

Mirvac is building Australia’s first net-zero energy (NZE) housing estate in Melbourne’s Altona North, expanding on its House with No Bills project, which saw a family live rent free in a prototype NZE house for 18 months.

The 49 townhouses will generate all of their power needs, through a combination of 3.8-5 kW rooftop solar arrays, 10 kWh home battery storage, electric vehicle chargers, real-time smart home energy monitors, upgraded wall and roof insulation, and double-glazed windows. 
The townhouses will also be equipped with energy efficient electric appliances, heating, cooling, lighting and hot water systems.

According to Mirvac, this will allow the homes to achieve a seven-star energy rating.

The estate, called The Fabric, is partly funded by the Australian Renewable Energy Agency (ARENA) last week contributed just under $800,000 to the project, which is costed at $2m.

Testing in The Fabric will gauge the public’s acceptance of net zero-energy homes and provide 24-months of de-identified energy data to ARENA to review the impact of the homes in operation.

“By incorporating energy efficiency, renewable energy and smart heating and cooling when designing and building new homes, Mirvac’s trial will hopefully encourage a step change in the housing industry and inform buyers of the benefits of NZE homes,” said ARENA CEO Darren Miller.

Following the announcement, the Low Carbon Living CRC today released 75 recommendations for governments to achieve NZE by 2050.

Buildings account for over 50% of Australia’s electricity use and a quarter of its carbon emissions.

“Energy efficiency has been the forgotten part of energy policy for the past decade as governments have debated energy supply,” said Ken Morrison, CEO of Property Council which co-developed the report.

“With the right policy frameworks in place, we can minimise the costs of a transition to net zero emissions and create economic opportunities across all parts of industry, from sole traders and homeowners to large businesses.”

“NZE at The Fabric will offer environmental and economic benefits. Lower energy consumption enables families to spend less money on their utility bills; it’s also the most responsible and sustainable choice for future generations,” said Mirvac’s Victorian General Manager of Residential, Elysa Anderson.

In July, research by the Low Carbon Living CRC showed that NZE homes are achievable and affordable, but that the market is slow to adopt energy efficient measures.

“There’s really no reason for future residential developments not to be zero-energy homes, but more work is required to educate the public, the industry and governments to make this business as usual, not the current approach,” said environmental scientist and CRC leader, Dr Josh Byrne.

Construction on The Fabric is expected to begin in late 2020
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