Inverters guide
How solar inverters work
The inverter is the part of a solar system that makes the electricity usable in your home. It's also the component most likely to need attention during a system's life, so it's worth understanding.
What an inverter does
Solar panels produce direct current (DC). Your home and the grid run on alternating current (AC). The inverter converts one to the other and synchronises your system with the grid.
Modern inverters also monitor the system, report generation to an app, and follow grid-connection rules — for example, reducing output if the network limits how much you can export.
The main types
String inverter
One central inverter for the whole array, usually mounted on a wall near the switchboard. Common and straightforward for simple, unshaded roofs.
Learn moreMicroinverters
A small inverter behind each panel, so each panel works independently. Useful where shading or several roof orientations would hold back a string system.
Learn moreString inverter with optimisers
A central inverter with electronics on each panel that manage panel output. A middle path between the two above.
Hybrid inverter
Manages solar and a battery together. Worth considering if you plan to add a battery now or later.
Learn more
What to check in a quote
- The exact inverter brand and model — not just its size
- That the model is on the Clean Energy Council's approved inverter list (needed for the federal incentive)
- Inverter warranty length, and who handles claims in Australia
- Whether the inverter can work with a battery later, and what that would involve
- Whether monitoring is included and how you'll see your system's output
- How the installer will handle any export limit set by your network
Sources
Facts on this page were checked on 26 September 2026. Rules and programs change, so confirm details with your installer.
Frequently asked questions
How big should my inverter be?
Inverters are usually sized close to the panel capacity. Installers sometimes pair slightly more panel capacity with a smaller inverter, which is common and allowed within limits. Ask each installer to explain their sizing.
Do I need a new inverter to add a battery?
Not always. Some batteries include their own inverter and connect alongside your existing system. Others need a hybrid inverter. It depends on your current equipment.
Compare what installers recommend
Up to 3 participating installers will explain which inverter suits your roof.
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