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BUILD 2025: Sustainable, energy efficient homes
Braithwaite Building, Googong
Sustainability and energy efficiency are an increasing focus of home building in Australia, and for good reason. Not only is it environmentally responsible to reduce the impact of your home on our planet; it can save a lot of money in energy costs in the long run.
AIM FOR 7 STARS
The minimum standard in the ACT for energy efficiency is now 7 stars. Before you start building, your certifier will need proof that your building will meet the mandatory minimum energy efficiency standard.
TIPS FOR A SUSTAINABLE AND ENERGY EFFICIENT HOME
• Use renewable energy sources (the sun) and solar panels.
• Consider the design and colour of your roof and walls.
• Position your windows and doors to allow for cross-ventilation and incorporate passive design throughout your home.
• Check that the glazing and types of frames on your windows and doors are appropriate for their location and perspective.
• Include space for a rainwater tank (compulsory in the ACT).
• Install quality insulation.
• Consider using recycled materials in the construction of your home.
Maximising energy efficiency
Canberra is blessed to experience four distinct seasons, marked by hot summers and cool winters. These seasonal variations make it essential to design a home that effectively manages temperature fluctuations and minimises energy use. Here are our top tips for building for energy efficiency.
ORIENTATION AND SHADING
Position your house to maximise natural light and minimise solar gain.
INSULATION
Proper insulation in walls, roofs, and floors is critical. High-performance insulation materials, like mineral wool or cellulose, can significantly reduce heat transfer.
NATURAL VENTILATION
Using natural ventilation strategies, such as cross-ventilation, passive stack effect and strategically placed windows can significantly reduce the need for mechanical cooling.
CHOOSE HIGH-PERFORMANCE WINDOWS
Energy-efficient windows with low-emissivity (low-e) coatings and argon gas filling can drastically reduce heat loss and gain.
OPT FOR ENERGY-EFFICIENT APPLIANCES
Choose appliances with high energy efficiency ratings. This includes refrigerators, washing machines, dryers, and even lighting.
SMART THERMOSTATS
Programmable thermostats allow for precise temperature control, reducing energy waste during unoccupied periods.
