Performance Solutions


A Performance Solutions (formerly 'Alternative Solution') is an alternative assessment method to the straight BCA Deemed-to-Satisfy (DTS) Elemental Provisions method. It provides for buildings that are unique, for example using new technologies, non-standard construction, extensive glazing, etc, to be assessed as a whole building, rather than individual components as per the DTS approach. This ability to compare energy efficiency at the building level means there is much greater flexibility and a wider choice of design options available.

Performance solutions may be applied to Class 1-9 (Residential & Commercial) buildings and may include:
  • Verification using a reference building modelling
  • On-site renewable power generation
  • Other unique test/verifications
Contact us today to see how your project may benefit from the above solutions. GreenForm is accredited in the latest residential and commercial building simulation software programs to accurately model any project no matter how simple or complex. We are also CEC accredited for on-site PV solar system design. See below for more detail on Performance Solutions.
Performance Solution – Verification using a Reference Building
For buildings not complying with the DTS provisions of the BCA, one of the alternative methods of compliance is via a Verification Using a Reference Building assessment. This alternative verification method compares a DTS compliant “reference” building, against the design “proposed” building. The two buildings are modelled and simulated in computer software to determine the total energy consumption over a full year. When the “proposed” building outperforms the "reference" building (i.e uses less energy), it is deemed to comply with the BCA.

There are many benefits to Verification assessments. This is mainly derived from the ability to consider the building as a whole, instead of individual components in isolation. This provides much greater design flexibility and the ability to trade performance between different building elements. This in turn results in building specifications that can provide savings in construction costs and maintaining the proposed design.

Specialist thermal software is required for verification assessments. NatHERS software cannot be used under the NCC BCA for this purpose. GreenForm utilises specialist software for this verification method to provide genuine compliance assessments.
Performance Solution – On-Site Renewable Power Generation
Does your project have a large energy consumption or requiring offsets/compensation of energy use? If so an on-site power generation performance solution may be a suitable option. Or maybe you would like to reduce your running costs into the future?

On-site power generation may considered in compliance assessments under the BCA, so long as the source is from a renewable class of power generation- ie solar, wind, hydro, etc.

GreenForm is accredited with the CEC as a PV solar system designer and is able to design and specify solar power generation systems for buildings for compliance or lowering energy bills. The necessary reports can also be provided where documentation is required to form part of a BCA compliance assessment.
If on-site renewable power generation is an option for your project contact us today to find out more.
BCA DTS Section J Elemental Provisions
BCA Deemed-to-Satisfy Elemental Provisions Vol 2