A Greener Future for the Building Industry

Elevating Standards: The Move to 7-Star Energy Ratings

The cornerstone of these changes is the elevation of the energy rating requirement for new builds to 7 stars. Previously, a 6-star rating was the benchmark, but with Victoria and the ACT leading the charge in November last year, other states are now following suit. The energy rating system is designed to evaluate the energy efficiency of a building, where higher ratings signify superior performance.

Why the Shift?

The building sector stands as one of the largest contributors to greenhouse gas (GHG) emissions in Australia, accounting for close to 20% of the nation's emissions footprint. Globally, the figure is even more staggering, with the industry responsible for 37% of worldwide emissions. The transition to a 7-star energy rating is a direct response to this environmental challenge, aiming to reduce both operational emissions and the embodied carbon associated with construction.

Impact on Consumers

For homeowners and tenants, these changes translate into tangible benefits. Enhanced home comfort, lower cooling and heating costs, and increased long-term value are just the tip of the iceberg. However, it's important to note that these improvements come with an upfront cost. The mandated construction changes, including upgraded insulation, glazing, extended use of solar systems, enhanced ventilation, and energy-efficient appliances, will inevitably lead to an increase in building prices.

What will some of these changes look like and how can they be utilised?  

- Passive solar design: Utilizing building orientation, natural light and local weather patterns is one of the simplest ways to minimise energy use

- Glazing Upgrades: Significantly aids in managing the home’s heating and cooling needs

- Insulation Upgrades: Reduces reliance on artificial heating and cooling systems  

- Upgrades to Solar: Updated solar infrastructure to reduce reliance on other forms of energy

- Ceiling Fans: A more energy efficient alternative to air conditioning  

- Colour Choices: Selecting external wall and window sill paint shades that help regulate home temperatures

- Lighting Solutions: Opting for fewer ceiling lights with IC4 rated downlights  

Challenges for the future

While the introduction of a 7-star energy rating system poses challenges, including higher initial costs for energy-efficient materials and systems, the long-term benefits cannot be overstated. Reduced energy bills and a smaller environmental footprint make this shift a wise investment for the future.

Innovation in sustainable building practices and technology will be crucial for the success of this initiative. By examining current projects, it's clear that thoughtful, forward-thinking design can benefit both the environment and the occupants of these greener homes. As we embrace these changes, the building industry in Australia has the ability to make transformative everlasting change to society.  

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