Types of solar inverter
| Type | How it works | Best for |
|---|---|---|
| String | One wall-mounted unit for all panels | Simple, unshaded roofs on a budget |
| Hybrid | A string inverter that can also run a DC battery | Solar now with a battery now or later |
| Microinverters | A small inverter under each panel | Shade and multi-direction roofs |
| Optimisers | A device on each panel plus a central inverter | Partial shade with central control |
See microinverters vs string inverters for the detail.
Solar inverter brands compared
| Brand | Type | Standard warranty | Battery option |
|---|---|---|---|
| Fronius | String and hybrid | 5 years, extendable | GEN24 Plus with compatible HV battery |
| Sungrow | String and hybrid | 10 years | SH-RS hybrid with SBR battery |
| Enphase | Microinverters | 25 years (IQ8, from Oct 2024) | AC-coupled IQ Battery |
| SolarEdge | Optimisers and inverter | 12 years inverter, 25 years optimisers | Home Hub with Home Battery |
Sizing an inverter
Inverters are usually smaller than the panel array. Clean Energy Council guidelines allow panels up to 133% of inverter capacity, which is why 6.6 kW of panels on a 5 kW inverter is so common. Your network may also limit inverter size and exports on a single-phase connection. See solar export limits.
Check grid support settings
New inverters must meet the Australian standard for grid connection and be set to your network's required settings. Some states also need inverters that can be remotely curtailed in emergencies. See the emergency backstop.
Common questions
It depends on your roof and plans. Fronius and Sungrow are common string and hybrid choices, Enphase leads in microinverters with a 25-year warranty, and SolarEdge suits partly shaded roofs with optimisers.
Only if you want a DC-coupled battery now or soon. Otherwise a string inverter is cheaper, and an AC-coupled battery can be added later.
Usually 5 kW. Clean Energy Council guidelines allow panels up to 133% of inverter capacity, and 5 kW often matches single-phase export limits.
Sources
Warranty terms come from manufacturer documents for Australia. General information comes from Australian Government sources. Last checked October 2026. Prices include GST unless we say otherwise.