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    • >> Energy Rating Services >> Energy efficient passive solar high performance 10-star challenge


    Energy efficient passive solar high performance 10-star challenge for keen designers and households

    EERs are expressed in Stars, ranging from 0 stars for very poor performance, through

    • 4 stars - the minimum BCA requirement from 2003,
    • 5 stars - the minimum BCA requirement from 2006,
    • 6 stars - the minimum BCA requirement from 2010, up to
    • 10 stars for a home that needs no heating or cooling except for some de-humidification in torrid weather.

    Clients seeking high performance will be guided by expert advice and parametric simulation of alternative designs and constructions to approach the "perfected" design outcome.


    Indicative heating and cooling costs of high and low performing homes

    These tables are based on electricity and natural gas prices current for Canberra from 1 July 2019 as published by ActewAGL.

    For details of the other assumptions used to create these tables for the Canberra climate see MBA publication "5 Factors for Green Living" here.

    The concept embodied in this table was first published in "Ethical Investment" Ross Knowles (Ed.), Choice Books, Sydney, 1997, "Investing in the Small Scale", chapter Investing in your own home by Trevor Lee, pages 97-105.

    * Input your preferred house size (75 to 500 m²) for tables below
    Home Energy Rating Stars (EER)
    Heater
    Cooler
    Stars
    (EER)
    Star123456789
    1$5,368$3,708$2,623$1,923$1,456$1,109$809$518$239
    2$4,906$3,389$2,398$1,758$1,331$1,014$739$473$219
    3$4,519$3,122$2,208$1,619$1,226$934$681$436$201
    4$4,189$2,894$2,047$1,501$1,136$866$631$404$187
    5$3,904$2,697$1,908$1,399$1,059$807$588$376$174
    6$3,656$2,526$1,787$1,310$992$756$551$353$163
    Annual Energy Costs for a 200 m² single storey home

    DuctsFoilR0.6R1.0R1.5R3.0
    High Energy
    House    		Cooling$528$211$136$104$45
    Heating$4,121$1,078$696$532$225
    Low Energy
    House    		Cooling$207$83$53$41$18
    Heating$2,617$685$442$338$143
    Indicative Annual Energy Costs for a 200 m² single storey home with ducts in the ceiling

    High performance ductwork is uncommon but it is commercially available and worth the investment. Contact Energy Partners for options in your area.