The Significance of Energy Compliance in Construction

With the growing emphasis on environmental responsibility, it is becoming increasingly important for builders to comply with energy efficiency regulations and codes. In this article, we will explore the importance of energy compliance in construction and highlight the emerging legislation and codes in Victoria, Queensland, and New South Wales that are reshaping the industry.

Energy compliance in construction is vital for reducing the industry’s environmental footprint. By adopting energy-efficient practices, builders can contribute to a more sustainable future, reducing greenhouse gas emissions, conserving resources, and minimizing the impact on the environment.

Energy-efficient buildings help occupants save on operational costs by reducing energy consumption. Builders who prioritize energy compliance can offer clients long-term cost savings through lower utility bills, increased property value, and improved overall building performance.

Energy-compliant buildings prioritize the health and comfort of occupants. Improved insulation, ventilation, and other energy-efficient measures create healthier indoor environments, reducing the risk of mold, condensation, and poor air quality, thereby enhancing occupant well-being.

NCC/BCA Residential Buildings – 1 October 2023

The new liveable house, energy efficiency and condensation mitigation requirements commence on 1 October 2023.

In summary, the changes will include:

1. A new minimum level of thermal performance equivalent to “7 stars” NatHERS thermal performance, to improve the thermal comfort of homes year-round.
2. A new annual energy use budget that provides a flexible approach to encouraging the selection of more efficient equipment.
   *from ABCB

In NSW much of the planned changes to the code are already dealt with in BASIX. The trend is the code and BASIX are converging.

NCC/BCA Commercial Buildings

On the commercial building side, the changes to the code include:

• New Performance Requirements now require certain buildings to have features which facilitate the future installation of on-site renewables and electric vehicle charging (B1P1(2)) and J1P4 of Volume One).
• The NABERS Energy Verification Method is expanded to Class 2 common areas, Class 3 buildings and Class 6 shopping centres (J1V1 of Volume One (2019: JV1)).
• New DTS Provisions to facilitate the future installation of electric vehicle charging equipment in carparks associated with Class 2, 3, 5, 6, 7b, 8 or 9 buildings (J9D4 of Volume One).
• New DTS Provisions to facilitate the future installation of solar photovoltaics and battery storage (B1D3(a) and J9D5 of Volume One). This excludes houses.
  *from ABCB

For those of us using the code on a daily basis the big change is that the numbering system for every clause is changing. The new system is more rational but when you are used to the current clause numbering system any change is a challenge!

NSW – A New Policy – State Environmental Planning Policy (Sustainable Buildings) 2022

As part of NSW governments target to reduce greenhouse gas emissions by 50 per cent by 2030 (compared to 2005 levels) and net zero emissions by 2050, the NSW state government has introduced this new SEPP. In turn, the new SEPP aim is to minimise the consumption of energy and potable water, reduce greenhouse gas emissions from energy use, monitor the embodied emissions of building materials, and deliver buildings that are comfortable in summer and winter.

The SEPP will include new requirements for both residential and non-residential buildings assessed under a Development Application. It will also incorporate the current SEPP (Building Sustainability Index: BASIX) 2004, therefore the current BASIX SEPP will be repealed.

New sustainability provisions for non-residential buildings will also arrive. However, the extent of these requirements will depend upon the scale and type of development proposed. To align with the Policy, accompanying the new SEPP will bring about amendments to associated Environmental Planning and Assessment (EP&A) Regulations.

Residential Component (BASIX)

Updating the BASIX standards are geared to further improve the thermal performance of homes. Key changes to existing BASIX standards for new residential buildings are an increase of the thermal performance standard from an average of 5.5-6 stars to 7 stars NatHERS rating, and an increase of between 7-11% in greenhouse gas reduction, however this standard varies depending on location and type of residential development proposed.

The BASIX standards are consistent and complementary to those in the proposed National Construction Code (NCC) 2022, so don’t forget to check in with the NSW variation in the NCC for relevant provisions relating to BASIX buildings – BASIX does not completely replace the BCA in NSW, as so often is the misguided perception! The BASIX online tool will be updated and there will be the introduction of a materials index to measure embodied emissions of construction materials.

Energy compliance has become a significant factor in the construction industry, promoting sustainability, cost savings, and occupant well-being. Builders in Victoria, Queensland, and New South Wales must remain aware of the evolving legislation and codes governing energy efficiency to ensure compliance. By embracing energy-conscious practices and staying informed about any regulatory changes, builders can contribute to a greener future and offer clients environmentally responsible construction solutions while securing their own professional success.