Australia’s shift toward climate-smart living is already delivering significant financial benefits to households, with energy-efficient home upgrades saving an estimated $3 billion annually, according to industry data.
On average, households are reducing their energy costs by about $1,500 each year through measures such as rooftop solar, battery storage, improved insulation, heat pumps, and passive design features.
These savings could increase further as more households integrate electric vehicles into their energy systems, potentially cutting petrol expenses by an additional $1,000 to $1,500 annually, depending on driving habits.
Together, these changes are reshaping how Australians manage both household costs and environmental impact.
The growing momentum behind these upgrades will be on display during Sustainable House Day on 17 May 2026, when hundreds of homes across the country will open to the public.
The event invites visitors to explore practical solutions firsthand, from retrofits and renovations to fully electrified homes, offering a real-world look at how climate-conscious design can be implemented at different budgets and scales.
Organised by not-for-profit group Renew, Sustainable House Day has become Australia’s largest community-driven event focused on climate-smart living.
This year’s program will highlight homeowners who have taken steps to improve energy efficiency, reduce emissions, and enhance resilience to extreme weather, including heatwaves, storms, and power outages.
Australia’s housing stock presents a major opportunity for improvement.
Most homes were built before modern energy standards were introduced, making retrofitting a critical pathway to lowering emissions and improving comfort.
Residential buildings account for roughly 24 per cent of national electricity consumption and more than 10 per cent of total carbon emissions, while Australians spend close to 90 per cent of their time indoors.
Helen Oakey, chief executive of Renew, said Australian households are driving one of the fastest clean energy transitions globally by adopting technologies that reduce costs while improving safety and comfort.
She noted that seeing practical solutions in real homes encourages others to take action, with small changes collectively making a meaningful impact.
Research indicates that households are more likely to adopt solar and energy efficiency measures after seeing their neighbours do so, reinforcing the role of community influence in accelerating change.
In 2025, more than 240 homes participated in the initiative nationwide, with over 150 open for in-person visits.
Some 70 per cent of attendees reported making changes to their own homes within six months, highlighting the effectiveness of hands-on learning.
This year’s themes focus on reducing energy bills, improving resilience to climate risks, making retrofits more accessible, and strengthening community-led action.
