System Performance
During daylight hours, your system will be generating electricity at varying rates
depending on the amount of sunshine. The more sunlight falling on the solar array the
more electricity is generated; variable factors such as cloud cover, seasonal solar angle
variations, shading or soiling of the solar array will have an effect on the electricity output.
Note that you do not need to change your energy usage lifestyle to correspond with your
solar system. Your energy consumption will be supplied by both solar and the grid.
The table below shows expected system performance using a 1kilowatt (1kW) PV array
facing true north at a tilt angle equal to the latitude angle, without shading.
1kW nominal PV array facing True North at a tilt angle equal to Latitude, with no shading.
4
If you already have a Smart meter installed, this may need to be reprogrammed to be able
to measure both your electricity imported and electricity exported. If you have an old
electro - mechanical meter (with the spinning disk), this will need to be replaced with a bi-
directional meter able to record the electricity you both import and export.
Your electricity retailer will read your meter quarterly and bill you for your electricity
consumption. Credit will be paid for electricity exported to the grid at the rate you have
negotiated with your electricity retailer. This is known as a
feed-in tariff.
Please note it is your responsibility to contact your electricity retailer to arrange for a feed-
in tariff contract.
Location
Best Month
kWh per day
Worst Month
kWh per day
Annual Average
kWh per day
Brisbane
4.61
3.34
4.04
Canberra
5.32
2.76
4.22
Darwin
5.11
3.54
4.47
Hobart
4.60
2.14
3.54
Sydney
4.83
2.82
3.94
Melbourne
4.59
2.22
3.58
Adelaide
5.72
2.51
4.25
Alice Springs
5.19
4.21
4.81
Perth
5.40
2.93
4.40
Cairns
4.44
3.18
3.86
System performance has been determined in accordance with AS/NZ 5033 guidelines
An average system efficiency has been used - includes PV array, wiring and inverter losses
