EnergyNeutralHome.pdf

A coefficient of 4 means that for every 1kw of

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(A coefficient of 4 means that, for every 1kW of electricity used, 4kW of heating or cooling are extracted from external air, water or earth. The higher the number, the more efficient the appliance.) Unlike gas systems that emit greenhouse gases regardless of their efficiency, electricity systems can be offset by on-site renewable generation. Select smaller energy efficient appliances with low stand-by power use and avoid unnecessary purchases. (see Appliances ; Home automation ) Reduce water use (it takes energy to treat and pump water to a home) and reduce hot water demand by installing water efficient showerheads, taking shorter showers and using cold water for washing clothes. (see Reducing water demand ) Thermal efficiency Improve the energy efficiency of the home when building, renovating, renting or buying by: ensuring effective orientation and layout to maximise solar-passive strategies (see Design for climate ; Passive solar heating ; Passive cooling ) adding or increasing insulation levels and using well-designed, climate-appropriate, insulation solutions e.g. a combination of bulk and reflective foil (see Insulation ) sizing and orientating windows to minimise summer heat gains and maximise winter solar gains (see Glazing ) using appropriate glazing and window styles for climate (e.g. low U-value; high solar heat gain coefficient in cold climates and low in warmer climates) (see Glazing ) using materials in ways that enhance passive solar heating and cooling (see Thermal mass ) reducing unnecessary heat loss and heat gain with draught-seals and weather-strips on doors and windows, and setting thermostats appropriately (see Sealing your home ) installing curtains and pelmets, external blinds and shading to reduce the need for additional heating and cooling (see Shading ). Renewable energy generation Install on-site (or community level) renewable energy generation such as: grid connected roof top (or frame mounted) PV for individual households larger PV arrays and wind turbines on viable sites for community level installations. Use grid electricity from accredited GreenPower providers, which encourages construction of cost effective, large scale renewable energy generation such as wind, solar thermal and biomass. GreenPower can be a simple, cost effective way for householders (particularly tenants) to reduce or eliminate their carbon footprint. GreenPower is less permanent than on-site generation because it can be discontinued at any time and does not give localised control and accountability for carbon emissions, which can deliver additional efficiencies. Anecdotal evidence indicates that occupants of homes with on-site renewable energy generation are more likely to use energy more efficiently due to increased awareness and monitoring of consumption.
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