Solar Power Calculator

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How much power will my system generate?

The output of a solar PV system depends on its size. The most common household systems are either 1 kilowatt (kW) or 1.5 kilowatts, although some property owners have installed systems of up to 10 kilowatts. The table below shows the average daily production of some common grid-connected systems throughout Australia.

Average Daily Production

City 1.5kW system 2kW system 3kW system 4kW system 5kW system
Adelaide 6.3 kWh 8.4 kWh 12.6 kWh 16.8 kWh 21.0 kWh
Alice Springs 7.5 kWh 10.0 kWh 15.0 kWh 20.0 kWh 25.0 kWh
Brisbane 6.3 kWh 8.4 kWh 12.6 kWh 16.8 kWh 21.0 kWh
Cairns 6.3 kWh 8.4 kWh 12.6 kWh 16.8 kWh 21.0 kWh
Canberra 6.5 kWh 8.6 kWh 12.9 kWh 17.2 kWh 21.5 kWh
Darwin 6.6 kWh 8.8 kWh 13.2 kWh 17.6 kWh 22.0 kWh
Hobart 5.3 kWh 7.0 kWh 10.5 kWh 14.0 kWh 17.5 kWh
Melbourne 5.4 kWh 7.2 kWh 10.8 kWh 14.4 kWh 18.0 kWh
Perth 6.6 kWh 8.8 kWh 13.2 kWh 17.6 kWh 22.0 kWh
Sydney 5.9 kWh 7.8 kWh 11.7 kWh 15.6 kWh 19.5 kWh

Data Source: PV-GC spreadsheet based on the CEC GC Design Guidelines

A typical Australian house consumes around 18 kilowatt hours per day so a 1-2 kW system displaces an average of 25-40% of your average electricity bill. Solar panels produce more energy in summer than they do in winter.

Source: Clean Energy Council Australia Consumer guide

How much will a 1.5kW system save under the Feed-in Tariff schemes?

City Feed-in Tariff Based on 25% electricity being fed into the grid Based on 50% of electricity being fed into the grid
Daily savings Annual savings Daily savings Annual savings
Melbourne Net export 60c/kWh $1.70 $621 $2.21 $808
Melbourne Net export 25c/kWh $1.23 $448 $1.27 $463
Adelaide Net export 44c/kWh $1.73 $632 $2.08 $759
Adelaide Net export 16c/kWh $1.29 $471 $1.20 $437
Brisbane Net export 44c/kWh $0.30 $108 $0.36 $133
Perth* Net 1:0:3 7c/kWh $1.11 $404 $0.89 $325
Canberra Net 1:1 20c/kWh $1.29 $471 $1.29 $471
Darwin Net 1:1 19c/kWh $1.25 $458 $1.25 $458
Hobart Net 1:1 20c/kWh $1.05 $383 $1.05 $383

*There are no mandated tariff levels in NSW and WA - consumers should speak to electricity retailers about what offers are available for connecting with them.
NB: This information is intended as a guide only and was current as at 7 November 2011. Consumers should speak directly with electricity retailers about their terms and conditions before entering into any contract.

Source: Clean Energy Council Australia Consumer guide