Solar Panel Installation Cost Guide Australia — 2025 Prices
How much do solar panels cost in Australia? System sizes, government rebates, payback periods and how to find a CEC-accredited installer.
Average Solar Panel Costs in Australia
Solar panel system costs in Australia have fallen dramatically over the past decade. After the federal Small-scale Renewable Energy Scheme (SRES) rebate, a quality 6.6kW system (the most popular size) typically costs $4,500–$8,000 installed. Larger systems with battery storage can cost $15,000–$25,000.
| Job / Item | Low | Average | High |
|---|---|---|---|
| 3kW system (rebate applied) | $2,500 | $3,800 | $5,500 |
| 6.6kW system (rebate applied) | $4,500 | $6,500 | $9,000 |
| 10kW system (rebate applied) | $7,000 | $9,500 | $13,000 |
| 13.3kW system (rebate applied) | $9,000 | $12,500 | $17,000 |
| Battery storage (10kWh) | $8,000 | $11,000 | $16,000 |
| EV charger add-on | $800 | $1,500 | $2,500 |
How the Solar Rebate Works in Australia
The federal Small-scale Renewable Energy Scheme (SRES) provides STCs (Small-scale Technology Certificates) for eligible solar installations. These certificates are typically assigned to the installer in exchange for an upfront discount on your system price. The rebate amount depends on your location, system size and the current STC value. Most quality installers include the rebate in their quoted price.
What is the Payback Period for Solar in Australia?
With current electricity prices and solar feed-in tariffs, most Australians achieve payback in 3–6 years on a 6.6kW system. After payback, the system effectively provides free electricity for its 25+ year lifespan.
- Average household saving: $1,000–$2,000/year on electricity bills
- Payback period (6.6kW, no battery): 3–5 years
- Payback period (6.6kW + 10kWh battery): 6–10 years
- System lifespan: 25–30 years (panels), 10–15 years (inverter)
- Expected lifetime saving (25 years): $20,000–$40,000 per system