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| Image: Thomas Hafeneth |
Referred to the Environment and Communications References Committee back in May 2017, the inquiry looked into climate change’s current and future impacts on the built environment, taking into account all projected climate scenarios.
Topics investigated included sea level rise, extreme heat, storms, flood, cyclones, coastal inundation, impacts on utility provision, impacts on transport infrastructure, and impacts on housing, hospitals, schools and public recreation facilities.
The report, which had submissions from a plethora of peak bodies, industry groups, scientists and academics, had been delayed three times before being released on Monday night.
Coalition fails to make any recommendations at all
But on release, more than a year after being referred, the report contained no recommendations from the committee, which was chaired by Greens Senator Janet Rice and also included three Labor senators, and a Liberal and National senator. Instead, each party provided a separate list of recommendations at the end of the report – or, in the case of the Coalition members, no recommendations at all.
Industry largely on the same page, but parties play politics
The report details the hundreds of billions of dollars worth of assets at risk from climate change, and the losses already experienced from extreme weather events. There wasn’t much we haven’t heard before: extreme weather events such as heatwaves, droughts and floods are already being super-charged by climate change; we’re not building to withstand potential climate events; land use planning hasn’t caught up with the realities of climate change and insurance costs are expected to rise dramatically.
There should have been a number of areas where consensus was achieved – for example, auditing infrastructure or construction standards to see if they can stand up to future conditions.
A number of submitters called for a national audit on the cost of climate change impacts on Australian infrastructure. Investor Group on Climate Change chief executive Emma Herd said a “whole-of-economy approach” to auditing was needed so that cost-benefit analyses could be made regarding mitigation efforts. The Climate Council’s Professor Lesley Hughes and the Australian Sustainable Built Environment Council agreed.
Kirsty Kelly, on behalf of ASBEC, said an audit wouldn’t even necessarily need to test individual assets, rather construction standards could be reviewed to consider “whether those standards are based on the frequency and intensity of weather events that we are seeing now”.
We’re still building in the wrong areas
Others called for better access to data. Local government associations and insurance companies noted that land use planning and zoning requirements were not reflecting the risks of climate change. In other words, we’re still building on areas likely to be flooded or at high risk of bushfire.
On housing the inquiry received evidence that “Australian buildings are generally not well suited to the existing climate, let alone a future further affected by climate change”. For example, Sustainability Victoria found an average NatHERS rating of 1.81 for homes constructed before 2005.
If the grid failed due to excessive use of airconditioning, those in poor quality houses were at great risk of heat stress and even death. If homes were upgraded to 5.4 stars, deaths from a 2009-type heatwave could be reduced from 374 additional deaths to 37.
A large number of submitters argued that minimum standards needed to be raised, and that NatHERS needed to be updated to better account for heat stress.
“Where the building code currently sits, the six-star minimum standard for NatHERS is not sufficient in its ability to address heatwaves in particular,” City of Melbourne’s Gavin Ashley said.
“It’s based on year-round energy use and splits that between your cooling and heating requirements. That doesn’t give a great indication of how your building is going to perform in a heatwave.”
ASBEC and the GBCA both called for a pathway to net zero emissions in buildings by 2050.
Greens and Labor find common ground
Senator Janet Rice said it was “disappointing” that the panel members could not “arrive at consensus conclusions on issues of such importance”.
In a speech to parliament Ms Rice said she had put forward a suite of recommendations she felt “were based very strongly on the evidence that was produced before us”, but which were not supported by the committee.
Instead each party delivered their own set of recommendations, or otherwise in the case of the Coalition.
“The government senators had no recommendations,” Ms Rice said.
“Their additional comments merely note a range of things that the government is already doing. They were not engaging with the serious nature of the evidence that was put before us in this important committee.”
It should be noted, however, that the Greens and Labor senators reached consensus on most issues, though Ms Rice called Labor’s recommendations a “watered down version” of the Greens’.
There was one recommendation only the Greens put forward, which was the establishment of an independent statutory authority to provide information on climate change. And both parties had different views on mechanisms required to transform the electricity sector.
But there was, largely, solidarity on the other 31 recommendations. These included:
- development of minimum building standards to address heat stress risks
- mandatory disclosure of residential energy efficiency be legislated at sale or rent
- that governments consider setting a date for minimum performance standards for all properties
- federal government committing to a net zero target (2040 for Greens and 2050 for Labor)
- funding of the preparation of a National Climate Change Risk Assessment that includes assessments of extreme risks and worst-case scenarios for Australia’s built environment
- funding Infrastructure Australia to lead a national audit of at-risk infrastructure
- ongoing funding to support the National Climate Change Adaptation Research Facility and bodies like CSIRO
- identifying options for ensuring that robust post-project reviews of infrastructure projects are conducted
- outlining a transition to net zero emissions transport sector
- that water system and sewer design factor in climate projections
- amending the National Electricity Objective to include decarbonisation of the electricity sector
- the development of a national climate change and health strategy
Links
- Senate Report: Current and future impacts of climate change on housing, buildings and infrastructure
- REST super fund faces legal action for silence on climate change
- Suburb “Cool Scores” key to solving Sydney’s heatwave woes
- Climate risks should be a priority for boards of directors
- On why it’s time to give up our massive risk taking appetite
- Australian heatwave deaths could rise by 500 per cent
- Property sustainability conversation turns to carbon positive
- Will the NEG change the net zero game?
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