Simultaneously, climate change demands that Australia rethinks the way it builds and designs infrastructure and housing to deal with increased heat, less rain, and new energy sources.
The Low-Carbon Living CRC spent almost eight years, starting in 2012, and finishing in 2019, solving both problems simultaneously. It has helped the nation meet its international emissions reduction targets, driving new policies, building methods, and materials.
Importantly, it has driven innovation in the sector through a creative approach to problem solving.
The figures are astounding: an independent audit of the CRC’s work sees a $1.1bn economic benefit to Australia by 2021, a benefit/cost ratio of more than 9:1 from a total investment of $116m. With a founding goal of $684m in economic benefits, it has smashed its expectations.
The Low Carbon Living CRC achieved this through pilot projects on net-zero emissions housing, databases of the carbon footprint of individual building materials, and resources for home owners on the benefits of renovation vs. demolition. Broadly, the CRC’s researched focused on three key areas: integrated building systems, low-carbon precincts, and engaged communities.
Its research reverberated internationally, with a global network of partnerships, including the KTH Royal Institute of Technology, Sweden; Tongji University, China; and Concordia University, Canada.
The CRC also developed the United Nations Environment Programme (UNEP) Guidelines for Sustainable Cities and Communities and Greening Universities Toolkit, and is also the only Australian member of the Global Building and Construction Alliance.
Scientia Professor Deo Prasad AO, the CEO of the CRCLCL has highlighted the levels of measured success of this CRC including the levels of evidence created to underpin policies and design and planning within the built environment. The success of this CRC has led to a much higher level of industry engagement on innovation in the built environment.
To reduce carbon, you need a baseline measurement. The preparation and design stages are the phases with the greatest potential to influence sustainability, circularity and carbon emissions.
This is why the Low-Carbon Living CRC created the Integrated Carbon Metrics database, giving developers the carbon footprint of individual building materials.
From there, the CRC developed its Embodied Carbon Explorer, and Precinct Carbon Assessment tools to help designers, manufacturers, planners and developers calculate embodied carbon emissions during the planning stage.
Its evidence-based policy proposals call for a shift in the building codes to would unlock energy/power bill savings for homeowners, and ensure better long-term return on investment for developers.
Reaching net-zero
Australia, as a signatory to the Paris Agreement in 2015, is obligated to reach net-zero on emissions by the second half of the century. This means that the total amount of carbon being released into the atmosphere (through energy generation, fossil fuels, agriculture, land clearing, etc) has to be balanced out with carbon being removed from the atmosphere. According to the CRC, the construction, operation and maintenance of Australian buildings accounts for 25% of Australia’s emissions.
Net-zero homes and buildings, which do not add to Australia’s total carbon emissions, are a legal, mathematic, and economic necessity if we are to meet our goals. The Council of Australian Governments (COAG) Energy Council has a plan in place for that crucial 25% of emissions: Trajectory for Low Energy Buildings, a national plan created with the findings of the CRC.
Net-zero homes are already a reality. Relying on research from the CRC, SJD Homes built Australia’s first net-zero energy home, which uses a combination of insulation, double glazed windows, solar panels, LED lighting, draught proofing, and an optimised physical orientation to keep the house cool in summer but warm in winter.
For consumers, there is the dual benefit of lower power bills and increased comfort throughout the year. It is a clear-cut example of innovation in practice, a novel idea put into practice that the market is willing to pay for.
Importantly, it is a demonstration of what is possible with the technology of today, not some future idealisation.
“There’s really no reason for future residential developments not to be zero-energy homes. More work is required to educate the public, the industry and governments to make this business as usual, not the current approach,” Dr Josh Byrne, Low-Carbon Living CRC.
The Low Carbon Concrete program has also delivered new building materials which Australia can manufacture and export globally,
including produced a patent for a geopolymer concrete with 50% less emissions than its traditional counterpart. It is now being used in a world-first geopolymer trial on a Sydney road, following trials with Sydney Water and NSW Ports.
It is helping businesses navigate a low-carbon focused economy, with research papers like Preparing your Business
for the Zero-Carbon Circular Economy providing planning pathways for materials suppliers, trades and contractors; transport companies and architects, engineers and other design firms.
Of course, replacing all of Australia’s buildings would result in a massive carbon emissions spike, which is why the CRC has resources to help homeowners and tradespeople to retrofit to existing stock.
Building the future
The doors of the CRC have now shut, but its work has laid the foundations upon which Australia’s low-carbon housing future will be built. Business, communities, and researchers will reap the benefits in the years to come, alongside individuals living in low-carbon housing. By all measures, the CRC has had an incredible impact, saving money, power, and the planet.