Solar PV System

Can You Add Solar Panels To An Existing System?

Yes, you can add solar panels to your existing solar energy system, depending on the capacity and configuration of your current setup.

To help you in this process, we are sharing some of the facts that you must keep in mind while upgrading your solar system.

Depending on why you are adding solar panels, your considerations will be different. Let’s take a look at each of them.

1. Inverter Capacity

The inverter is required to convert the DC power generated by the solar panels into AC power.

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Replacing the inverter depends on the number of panels you install in your solar system.

If your current inverter does not have enough capacity to handle additional panels, you have two options: you can either upgrade the existing inverter to a larger one or add a separate inverter to handle the new panels.

2. Mounting Space

Evaluate whether you have enough space on your roof or property to accommodate the additional solar panels. Ensure that there are no shading issues that could reduce the efficiency of the new panels.

3. Add Solar Panels to the Existing System

If you have additional roof space with good sun exposure, it is relatively easy to fit more solar panels on a new section of the system.

These additional panels can usually be attached to the existing string, giving your solar panel greater capacity without major modifications to your current system.

You can also avail of solar rebates for the additional panels you are going to install depending on eligibility criteria.

If you are expanding your system significantly, some regulations may impose limitations or require additional approval for additional panels, so you should talk to the best solar company in Australia about any additional permits you may need before continuing. Also, check if it will get you rebates for solar panels.

4. Panel Efficiency

When upgrading your solar system, it is always best to use panels that are identical to your existing system.

If your current system’s panels are no longer available, solar panels of similar capacity are your best option so that your current panel’s efficiency is not compromised.

6. Panel Compatibility

Ensure that the new solar panels you plan to add are compatible with your existing system in terms of voltage and technology (e.g., monocrystalline or polycrystalline). Mixing incompatible panels can lead to suboptimal performance or damage to the system.

7. Monitoring and Regulation

Adding more panels might require adjustments to the system’s monitoring and regulatory components to ensure proper functioning and compliance with local regulations.

8. Professional Installation

Adding solar panels to an existing system is not a DIY project. It’s essential to hire a qualified solar installer to assess your system, determine the compatibility of the new panels, and ensure safe and proper installation.


Finally, once you are well-informed about adding solar panels to the existing system. It is important to choose the best solar company in Australia to help you upgrade your solar panels. Importantly, solar power installation in Sydney should only be done by certified professionals. Always choose the one that is reputable and will surely meet your expectations.

Get a free quote from Isolux to install solar panels to an existing system.

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