As of 1 August 2012, the average price per watt of an installed solar system prices sits at about $2.40/watt (after STC rebate) across Australia’s major capital cities (excluding Darwin and Tasmania), based on numbers from the Solar Choice database. Average system prices generally varied between city by less than $1000 for each system size, while median system prices for each city were on average about $300 lower than the averages displayed in the table below, indicating that a larger number of installers offer prices below the average than above.

In a comparison of all packages on offer, regardless of city, the lowest price for a 1.5kW system (besides $0 down ‘solar leasing’ deals) came in at around $1,500 ($1/watt) for a non tier 1, all Chinese package. At the upper end of the market were a mix of all-European, all-Chinese (tier 1 and 2), and European-Chinese systems with prices floating in the low to mid $6,000 range. Systems with prices near the average were either all-Chinese or a Chinese panel/European inverter combo, with a few offering tier 1 Chinese panels.

In a similar, non city-specific comparison, prices for 3kW systems and 5kW systems ranged widely from around $4,000 to $12,500 and $8,000 to $20,000, respectively. At the high end of the spectrum could be found a mix of both all-Chinese and all-European packages, with some of the European packages coming in nearly $1,000+ less than the Chinese ones. None of the more competitively-priced systems included European-made panels, although a small number did feature big Chinese names such as Suntech and Trina, as well as well as European and NZ-made inverters. Mid-market system offerings in the 3-5kW range generally offered good value for money, with most containing European inverters coupled with a broad mix of European, tier 1 & 2 Chinese, and Korean panels.

Although there were no major differences in average price per watt between system sizes, 3kW systems seemed to be offering the best bang for buck at $2.32, vs around $2.45/W for 4kW and 5kW systems. This could be related to the relatively high competition in the market for systems of this size; since the latter half of 2011, Solar Choice has noticed a trend among customers towards a preference for 3kW systems, away from the 1.5kW’s ($2.36/W) that were the staple system size when Australia’s solar industry had just begun to take off and prices were still significantly higher.

STC prices also vary widely by installer, from as low as $21/STC, with only one offering a seafood shop-style ‘market rate’. The average price offered for an STC was $27, while the single price offered by the greatest number of installers was $25.

Solar Choice Solar PV Price Index August 2012 (Click to enlarge)

About this data

The figures in the above chart are a simple average of the prices on offer from Solar Choice network installers in each of Australia’s major capital cities, and do not reflect the average prices at which systems are actually purchased. The number of installers whose system prices have been used varies from city to city; the Perth average is based on figures from 15 active installers, whereas Brisbane prices are based on figures from nearly 50. All averages have been calculated based on installers’ final total price after STCs; the STC price offered varies by installer.

About Solar Choice

On the residential side, Solar Choice provides free and impartial Solar Quote Comparisons for customers throughout Australia, working with a network of over 100 solar PV installers. Solar Choice has assisted over 45,000 Australians in making an informed selection of solar PV system installer.

Solar Choice Commercial manages tenders for a wide range of commercial-scale solar PV projects throughout Australia, including solar farms and utility-scale solar PV plants.

This article also appeared in Climate Spectator.

© 2012 Solar Choice Pty Ltd

James Martin II

James Martin II

James has been involved with Solar Choice since 2010, when he first came on board as a contributor to the Solar Choice blog. Whilst continuing to write for Solar Choice's blog, James also oversees all of Solar Choice's online communications, search engine optimisation & other online development efforts. He is responsible for composing Solar Choice's monthly Solar PV Price Index articles and our Calculator Resource Library.

James holds a Master's degree in Environmental Management from the University of New South Wales. and an undergrad degree in philosophy from Bridgewater State University in his native Massachusetts. He has a keen interest in developments in the renewable energy field, with a focus on distributed solar and energy storage.
James Martin II

{ 2 comments… read them below or add one }

Photomofo August 26, 2012 at 6:54 am

Hi James…

Great info… I’ve been looking for average installed cost data from Australia for a while. How would I remove the benefit of the STC from this data?


admin September 4, 2012 at 6:40 pm

Hi Photomoto,

That would take a bit of calculating–you’d have to look at the locations and determine their STC zone, then multiply the number of STCs by the average STC price and subtract that figure from the average system price for each location. That would give you an idea, anyhow.

We’ll be coming out with an updated version of all this info in the next week or so and will try to incorporate average system prices minus STCs as well. Keep an eye out–follow us on Twitter, perhaps! @Solar_Choice


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