Commercial Energy Efficiency Assessment

To obtain a building permit for a new commercial construction or a major renovation, applicants need to provide a compliance evidence that the proposed building design meets the minimum energy efficiency requirements specified in the National Construction Code (NCC). Our commercial energy efficiency assessment service is straight forward and efficient, and is designed to meet the needs of our busy clients. With this service we assess commercial (non-residential) building to conform to Section J of the National Construction Code (NCC). We provide assessments for all types of buildings, across all states of Australia. Buildings such as multi-storey units, schools, shopping centres, retail/office tenancies, warehouses, airports, etc.






What Options are Available to Meet Minimum Energy Efficiency Requirements?

There are two options available: First is reference building verification method and the second option is Elemental Provisional to satisfy all the listed minimum insulation R values for roofs, walls and floors

       Reference Building Verification

For a Class 3, 5, 6, 7, 8 or 9 building, compliance with minimum energy efficiency requirements of NCC is verified when it is determined that the annual energy consumption of the proposed building with its services is not more than the annual energy consumption of a reference building when:

1- The proposed building is modelled with the proposed services; and

2- The proposed building is modelled with the same services as the reference building. Here the reference building means your proposed building that has all minimum insulation and glazing requirements specified in NCC Section J.

The annual energy consumption of the proposed building in (1) can be reduced by the amount of energy obtained from an on-site renewable energy like solar PV, thermal solar or wind power source; or another process as reclaimed energy.

     Deemed To Satisfy (DTS)

The Deemed to Satisfy method in NCC is to demonstrat that a building meets the minimum criteria for energy efficiency. It requires the building design to utilize all the minimum insulation and glazing requirements that are specified in NCC. For instance, for a commercial building in Melbourne, no matter how much energy is lost/gained through the roof surface, the roof insulation must have a minimum R value of 3.2 m2K/W. A "Deemed to Satisfy" Report or DTS Report is essentially a checklist which demonstrates your buildings ability to meet the minimum required energy rating.

The DTS method might be a cheaper option for obtaining energy efficiency compliance certificate, but since the DTS method doesn't provide any measure on how much energy efficient is the building solution and it may end up with over-insulating some parts of the building and may not result to any considerable reduction of building heating and cooling requirements.

Why Choose GeoFlow rating Service

GeoFlow energy rating and energy audit experts have PhD qualifications with experience over a range of different kinds of buildings. We provide our services to many leading architects, developers and builders right across Australia. We are accredited by ABSA and trained and certified to use the latest FirstRate5 Energy Rating software. For 3D modelling and compliance assessment we use and Energy Plus and Open Studio 3D modelling tools developed by US Department of Energy.







For a competitive price assessment and solar passive house design and other sustainable solutions, please check out our services website and contact us.