The energy use budget or target energy value is calculated based on the total floor area of the apartment or house and its location.

Unlike the older standards, the new GEMS standard is location-dependent and the rating system depends on the climate zone the building is located in and separates the ratings for hot, cold or mixed climate zones.

water heaters can be eligible to generate Small-scale Technology Certificates (STCs) under Australia’s Renewable Energy Target.

Among these methods, NatHERS energy rating methods prove to be more accurate, connected with the energy demand of the house, more detailed and more inclusive

Installing photovoltaics helps residential buildings achieve the score required to achieve compliance with the new Whole of Home standard.

Apart from buildings located in NSW, all other residential dwellings and apartments are considered to adopt the new Whole of Home standard introduced by NCC 2022.

No. NSW government has a different scheme for residential building performance and energy use that is BASIX.

The minimum rating for a Class 1 building is 60, and for a Class 2 and Class 4 part of the building is 50.

Yes. Class 2 apartment buildings require a Whole of Home rating of 50.

The latest NatHERS Technical Note sets the information for default appliances to use. The minimum information you need is the type and energy source of water heating and cooking appliances.

There are no strict requirements for space heating and cooling appliances. However, the more efficient the air conditioning system, the lesser the energy value of the building.

There are no strict requirements for a water heating appliance. However, the more efficient the water heating system, the lesser the energy value of the building.

A Whole of Home rating of 50 means that the proposed building has the same performance as a similar-sized reference building.

Whole of Home rating scales from 0 to 100 and beyond. A rating of 100 suggests that the proposed building consumes the same amount of energy as it produces.

Cost of carbon is a cost that is associated with offsetting the negative impact of greenhouse gas emissions that are produced by the building’s appliances.

This target energy value is equal to 70% of the energy value of a house of a similar size

Energy value is the cost of all appliance end-uses (i.e. electricity and gas consumption) and offsets by photovoltaics and batteries.

The Whole of Home is the new approach introduced in NCC 2022 for residential buildings that aim to reduce energy use and societal costs of energy use.