Should you upgrade your solar system with a single inverter?

If you’re using a single inverter, you may be limited in what panels you can use to keep your system running efficiently and smoothly. When upgrading your solar system, you’re almost always better off using panels identical to those in your existing system.

Can I upgrade my inverter?

If your existing inverter is already working near to its full capacity, for example 3kW-4kW of panels with a 3kW inverter, you have two choices: upgrade to a 5kW inverter and add an additional 2kW-3kW of panels, or your new and existing solar systems will operate side by side.

How do I upgrade my solar power system?

Add solar panels to your existing string inverter (if that’s possible). Add panels with microinverters. Add a second solar power system. Remove (or move) the old system and replace with new. I’ll go through each upgrade option to help you decide the best one for your roof.

Can I upgrade my solar system to a 5kW inverter?

In this scenario, you could upgrade to a 5kW inverter and an additional 2kW-3kW of panels. Your new and existing solar system systems will operate side by side. Typically, residential properties in WA have a maximum total inverter capacity of 5kW so they remain eligible for the Synergy feed-in-tariff.

Can I add new solar panels and new inverter capacity?

However, if you are adding new solar panels and new inverter capacity then you have three options. You can add a new combination of panels and inverters alongside your existing system, if it’s perfectly functional, still under warranty and in good condition.

How much does a solar inverter cost?

Here's an estimated replacement cost for a solar inverter: String inverters are the more affordable option for PV system owners to consider. This type of inverter operates by gathering DC from a sequence of solar panels, known as a 'string'. The solar inverter replacement cost generally ranges from R10,000 to R30,000.