Category: Solar Tips | Perth Solar Force
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Why Autumn Is a Good Time to Install Solar

rooftop solar


After what is now being considered Perth’s hottest summer on record [1], Autumn is officially here in Western Australia and with that finally brings the promise of some cooler days. But there are still plenty of sunny days left to come! Many people, unfortunately, overlook Autumn as a good time to install solar panels, but it’s actually one of the best times of the year to do so. Here’s why:


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What Makes a Good Solar Company In Perth?


solar panels perth


Solar power is a fast-growing industry in Australia. According to the Australian Government’s Department of Industry, Science, Energy and Resources, Australia has the highest uptake of solar globally, with around 30 per cent of homes now having rooftop solar panels. As of 9 November 2021, over 3 million rooftop solar PV systems had been installed across the nation.

Are you considering installing solar panels on your residential or commercial property? It’s important that you use a reputable solar company in Perth. Below are some qualities to keep a lookout for:

  • Does the company have sufficient industry experience?  – A good solar panel company must have gathered a lot of experience in the Western Australian solar industry and must be familiar with and comply with all relevant standards and regulations.
  • Does the company provide detailed and professional quotations? – A reputable solar panel company should provide you with a detailed quotation that includes the specifications of your solar panel system (including the brand of solar panels, the number and model of panels), the expected generation of your system and warranty conditions.
  • Is the company Clean Energy Council (CEC) Accredited? – The CEC is the peak body for the clean energy industry in Australia. CEC Accredited installers are certified and trained to ensure that your solar panel system meets industry best practice standards and all relevant Australian Standards.
  • Do the company have many positive reviews on their Google Business Profile? – This one speaks for itself! Always read reviews of the Perth solar company left by previous customers to find out if they are indeed a credible company.
  • Do they provide high-quality products? – Quality solar panel products from well-known solar brands will be safer, more efficient and should last much longer than cheap alternatives from dodgy companies.
  • Do they install their solar panels safely? – You should only ever go with a solar panel company that takes the necessary precautions each and every time to reduce health and safety risks for its clients and staff.
  • And do they provide a high level of support once your solar panel system has been installed? – A good solar panel company will always be happy to answer any questions or concerns that you have about your solar panel system once it has been installed. They should also provide a dedicated solar inspection and repairs service.


Reasons to Choose Perth Solar Force

Perth Solar Force is proud to be a leader in the Western Australian solar industry. We are locally owned and operated and currently employ more than 80 full-time workers – each one of which have been personally selected for their unique set of skills and experience.

Our team have successfully installed more than 10,000 solar panels systems (+200,000 solar panels) since our formation, and we are currently installing at a rate of over 250 solar systems each month.


solar companies perth


We are a CEC approved retailer, CEC associate member and CEC accredited installer. This means that our customers can rest assured that they are purchasing a quality product from a reputable company that guarantees the backing of their solar panel system for at least five years. Our solar installations adhere to strict Australian safety regulations, and we take pride in our high level of quality and service with each job.

We have a no-pressure sales approach and our company representatives always use a consultative approach to fully understand our client’s needs and energy objectives.

We have heaps of positive reviews from real-life customers on SolarQuotes, Facebook and our Google Business Profile. Want to learn more about us or our process? Click here or give the friendly team at Perth Solar Force a call today!


East West Facing Solar Panels On A Single Inverter Input Can Work Well

Most Australian solar installations use string inverters where solar panels are connected in series with an electrical cable. Each group of panels in series is called a string. Each string is connected into a separate input on the inverter.

In the configuration above, each string can have a different numbers of panels and each string can face different directions. You could even have a different type of panel for each string. This is because each inverter input is connected to a separate Maximum Power Point Tracker (MPPT). The MPPTs optimise each input separately.

Sometimes multiple strings are connected in parallel, into one inverter input. To do this each string must have the same number of panels and they must be identical brands and models.

Generally speaking all the panels in the configuration above need to be facing the same direction, or the MPPT struggles to optimise the array efficiently.
If an east/west split of solar panels is desired, where some panels are facing east and some facing west, then normally those panels would be placed on separate strings and a two-input inverter would be used.

I Didn’t Believe It Myself At First

When I was told it was possible to put both east and west-facing panels on the same inverter input without a serious decline in performance, I was very sceptical. I was all, “Nah! That’ll never work!

When the sun isn’t directly overhead the two sets of panels will receive different amounts of light and, since they’re on the same input, the mismatch will cripple the MPPT’s optimisation and pull down the performance of the others. It’s not a good combination. Putting east and west-facing panels on a single input is like putting chalk and cheese together in a sandwich and hoping the contrast of flavours will result in a taste sensation.”
But I looked it up and it turned out to actually be correct, but only under the right circumstances.

Dietmar Is The Dude With The Dirt On Single String Shenanigans

When it comes to getting the low down on east/west splitting on a single inverter input, Dietmar Staudacher is the man to turn to. Or at least I assume he is a man. Very few women are called Dietmar. But I’m sure those women who are called that are quite impressive.

Dietmar wrote, Ost/West-Ausgerichtete PV-Anlagen Mit Nur Einem MPP-Tracker, and you can read a PDF of that paper in its original German here. Fortunately, I am extremely talented at reading German… after it has been translated into English. And you can read a translated PDF by clicking on its English title, Efficient East-West Orientated PV Systems With One MPP Tracker.

Now note that Deitmar’s paper was published 7 years ago, which is like 7 years in solar years. There have been a lot of developments since then. But his basic conclusions are still sound.