Perth WA Best Solar PV system deals

Find the best solar power deals in Perth, WA

by James Martin II on February 20, 2012

in Solar and Renewable Energy Policy,State Government solar feed-in tariffs,WA

Perth is WA’s biggest city, and a great place to install a solar power system. With electricity rates rising, solar installation prices falling, and significant potential up-front financial subsidies through the federal government, now is a great time to find deals on solar power systems in Perth.

Why is Perth a good place for solar power?

Financial benefits of the Perth sunshine

When you own a solar system in Perth, more sunshine means more savings, so it’s useful to know what to expect. Perth receives an annual average of around 4 hours of sunshine per day. This means that, with a 1.5kW solar PV array, a home will generate 6kWh per day on average throughout the year. A 3kW system will produce around 12kWh per day, and a 5kW system will produce around 20kWh per day.

Household electricity consumption and PV system generation

Household demand varies by the size of family and the appliances used and how frequently, but as a ‘base case’, the average 3-person home uses 20kWh per day, averaged over the course of a year. This means that with a 5kW solar system, the home’s energy consumption is just about covered by the system’s output provided that the system owners time can time their electricity consumption to match solar PV system power generation.

For residential customers: Currently, residents of Perth and surrounds are offered about 8c/kWh for excess solar power that they export to the grid–far less than the retail electricity rate. This means that the best strategy for Perth residents is to ‘self-consume’ as much of the power that the system generates as possible, while the sun in shining. By doing so, they will avoid incurring charges with their electricity retailer, and save money on their power bills. This, of course, will work best for those who are home during the day, or for businesses that operate during daylight hours.

For educational organisations & not-for-profit customers: Synergy offers generous feed-in tariff rates for not-for-profit, schools, and community organisations. This makes going solar a great investment. Read more: Solar Buybacks for not-for-profits, schools, and community organisations in and around Perth, WA.

Up-front Federal Government Solar Rebates for Perth

Under the federal government’s Renewable Energy Target scheme, households and businesses installing systems up to 100kW are awarded a greater or smaller number of small-scale technology certificates (STCs) depending on their location, the size of the system that they install, and the market price for STCs at the time of installation. These STCs contribute to the up-front cost of installing a solar PV system, ordinarily giving a discount of anywhere from 55-70c per watt for a system in or around Perth, WA.  (Read more about current solar system prices.)

How installing a solar system helps you cut your electricity bill in Perth

Depending on the electricity usage of the household, a solar generator could save Perth residents a significant amount of money on their power bills. It is important to keep in mind, however, that electricity consumption time management is the key to getting the most financial benefit of solar power. Since the Feed-in Tariff is only 7c/kWh, Perth residents get will want to avoid exporting to the grid as much as possible; solar electricity consumed at home is in effect worth as much as the the rates that they pay for electricity from the grid.

How can I find the best deal on solar power in Perth?

Solar Choice, as Australia’s free Solar Energy Brokering and advice service, connects solar PV customers with installers who service their area. We provide comprehensive quote comparisons of solar power installations throughout the country–including in Perth. With a bird’s eye view of the solar power market, Solar Choice is uniquely poised to identify the best deals on offer and facilitate our customers to find the solar system that best suits their needs and budget. Request a Solar Quote Comparison today by filling out the form to the right of this page, or call us on 1300 78 72 73.

Calculate indicative solar power system ROI & payback periods for Perth, WA

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© 2012 Solar Choice Pty Ltd 

(Top image via Wikipedia)

James Martin II

James has been working as analyst and online development manager for Solar Choice since 2011 and has contributed hundreds of articles to the Solar Choice website during this time.

He holds a master's degree in Environmental Management from UNSW, and a bachelor's degree in Philosophy from Bridgewater State University in his native Massachusetts.

He currently works remotely for Solar Choice from New York City.

{ 4 comments… read them below or add one }

Ken Stranger June 1, 2012 at 7:19 pm

I am curerntly researching the advantages of Solar in the current scheme of rebates etc and (please correct me if I am wrong) the following statement in the text of your web site I would find hard to believe because you would have to be cosuming all the power during the core sun hours of the day – most households I would expect have highest consumption outside the hours of the solar generated power. So to say a 5Kw system “just about covers the daily consumption” I would suggest is misleading.

Quote” Household demand varies by the size of family and the appliances used and how frequently, but as a ‘base case’, the average 3-person home uses 20kWh per day, averaged over the course of a year. This means that with a 5kW solar system, the home’s energy consumption is just about covered by the system’s output”


admin July 26, 2012 at 8:12 pm

Hi Ken,

Yes, you’re right that that information could be misinterpreted, so I’ve changed the wording. If there is a Feed-in Tariff (which there no longer is in WA), it could be possible to offset your entire bill with a solar PV system. However, in the absence of such a scheme, it is necessary to instead ensure that all the solar power is being consumed as it is being produced–otherwise you are ‘wasting’ the power by letting it go into the grid for 8c/kWh. The system does still, however, afford significant benefit to those looking to reduce their electricity bills.


Tom Slaiter February 6, 2013 at 11:18 pm

Do you have any other calculators? Will the one for Perth work anywhere else?!

Great post, thanks a lot :-)


Solar Choice February 19, 2013 at 11:16 am

Hi Tom,

The Perth calculator will essentially work for the whole of Australia, the Perth specific data is the system price which comes from your Solar Quote Comparison. If you put in all your details you will get a price for systems in your area, you may also need to change the average sunlight hours for your state or area.

We have specific calculators for different states and system sizes which you can check out by searching ‘ROI’ on our website.

Hope this helps


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