Home Cost Australia

Solar Panel Installation Cost

By Home Cost Australia Editorial TeamUpdated 20 September 2026

Solar panel installation cost scales mainly with system size (kW), plus your roof type, access and any electrical work. Rather than publish an unverified per-kW price, this guide gives you a framework: size the system to your use, then get itemised quotes.

A sizing-first framework

The most useful first step is sizing. Use the solar system size calculator with your daily use, target offset and your own peak-sun-hours to find a system size in kW. Installation quotes are then priced around that size.

What changes the quote

  • System size (kW) — the biggest driver.
  • Panel and inverter tier.
  • Roof type, pitch, storeys and access.
  • Switchboard or metering upgrades.
  • Small-scale certificate value at the time of install.

Where to find observed pricing

For actual installed pricing by state and system size, the SolarQuotes Price Explorer summarises a large set of real Australian installations. We link it in our sources rather than reproducing its database, and we will add our own attributed summary figures and methodology here before featuring this page prominently.

Next steps

Size the system, decide whether to add a battery now or later (see battery cost), and compare itemised quotes for the same system size.

Sources

  1. Solar & battery Price Explorer
    SolarQuotes · 2026 · Last checked 20 September 2026