A Panel Array That Is Larger Than Your Inverter – Oversizing Your Solar Inverter

A well designed solar system can save you thousands of dollars and significantly increase output by oversizing the panel array compared to the inverter. We call this Supersizing Your Solar Inverter.

Solaray is the solar & storage experts. This means we take the time to find out what you are looking for and offer designs that will not only maximise solar output but also maximise value for money. We want our customers singing from their solar rooftops about just how great their system is.

Solar power is an investment that rewards you with decades of lower power bills, and a well-designed system can mean bigger savings over the long run. Let’s get into the details and find out how you can save thousands off your solar power quote by Supersizing Your Solar.

Option 1. Supersize Your Enphase System

To maximise system efficiency, we want a micro-inverter to reach its maximum output as quickly as possible and then stay there for as long as possible. With the microinverter purring at maximum output, your solar system will be at maximum efficiency, which means more solar power and more bang for your buck.

In terms of performance, an oversized micro inverter will clip the output from the solar panel, but only during the middle of the day and only on the best days of the year. In winter and on days when the weather is not ideal for solar, oversizing the inverter will give you more power across the day with no clipping at all, as illustrated here:


On the days where some clipping does occur, the loss is, for the most part, made up by the fact that you have better panels outputting more power in the morning and during the afternoon.

Smart right?

Option 2. Supersize Your Standard String System

If you are looking for a really quick return on your money, a standard string system can pay for itself in less than 3 years. It might not have all the bells and whistles of an Enphase system, but for the right household, this is still a great option.

A string inverter can be supersized with less than 1% loss in efficiency due to clipping. This means that for customers looking for a 5kW system, you can go ahead and install up to around a 6.5kW string of panels with a 5kW inverter*. Great news! It’s something we now recommend for anyone who is looking to maximise their returns.

Furthermore, the government rebate is based on the size of the panel array, not the inverter. For example, based on the current STC price of $37, a 7kW system comes with a $4,736 rebate whereas a 5kW system comes with a rebate of $3,256.

The larger rebate, for the most part, covers the extra panels, making it a no-brainer for many eligible households. As the mantra goes: “you are paying for a team of solar installers to drive out to your house and install a solar system. Why not get them to throw a few more panels in the back of the van?”

If you have any questions regarding how to Supersize Your Solar, please call us on 1300 525 451. The Solaray team would be happy to help recommend the best option for your home or business that not only maximises power but that also helps you save money. How’s that for a change?

*Houses in Endeavour Energy (western half of Sydney) must have three-phase power for a system larger than 5kW, however, there are ways to get around this using export limitations. Contact us for more information, we can quickly work out what rules apply to your situation.

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