Solar System Prices: State by State Comparison
High uptake of solar power can offer greater competitive pricing due to a mature market. Less state-specific support but eligible for
Accordingly, the uptake of commercial solar power has increased significantly in Australia in the last several years. As per the table, the average cost of a 100kW solar power system as of August 2024 is $87,920 including GST and the STC upfront rebate.
As per the table, the average cost of a 100kW solar power system as of August 2024 is $87,920 including GST and the STC upfront rebate. The graph below – from our Commercial Solar PV Price Index – shows average price trends for 100kW solar systems since Solar Choice started keeping track in May 2014.
It would actually be cheaper to channel the surplus power back to the grid or invest that money in a bigger solar system. With inverters for commercial solar systems, you want to ensure that they are almost the same size (in watts) as your solar system. So, your 100kW solar system should have a 100,000W solar inverter.
Here's how you can calculate your savings with a 100kW solar system. Assuming that you're living in Sydney where electricity costs 32c/kWh, with a monthly solar power output of 10,800kWh. If you consume 70% of your generated power, you'll be consuming 7,560kWh. In savings, this translates to around $2,419.20.
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