How Much Do Solar Panels Cost in Australia? (2026 Guide)
Solar panels are one of the smartest investments an Australian homeowner can make. With generous federal rebates still available and electricity prices continuing to rise, the payback period for a quality solar system is shorter than ever. This guide covers real 2026 pricing for residential solar installations across Australia.
All prices are in AUD and include GST unless otherwise noted.
Solar Panel System Costs (After Rebates)
The federal Small-scale Renewable Energy Scheme (SRES) provides an upfront discount on solar installations through Small-scale Technology Certificates (STCs). The prices below reflect the after-rebate cost — what you actually pay out of pocket.
| System Size | Typical Cost (after STC rebate) | Best For |
|---|---|---|
| 3kW (8–10 panels) | $2,500 – $4,500 | Small household, 1–2 people |
| 5kW (13–15 panels) | $3,800 – $6,500 | Average household, 2–3 people |
| 6.6kW (16–20 panels) | $5,000 – $8,000 | Most popular size, 3–4 people |
| 10kW (25–30 panels) | $7,500 – $12,000 | Large household, EV charging, pool |
| 13kW+ (33+ panels) | $10,000 – $16,000 | Large home, high consumption, future battery |
Tip: The 6.6kW system is the sweet spot for most Australian homes. It maximises the STC rebate (which is capped relative to inverter size — a 6.6kW panel array with a 5kW inverter is the most common and cost-effective configuration).
Battery Storage Costs
Adding a battery allows you to store excess solar energy for use at night. Battery prices have dropped significantly but still represent a major investment.
| Battery Size | Typical Cost (installed) | Storage Capacity |
|---|---|---|
| 5kWh | $5,000 – $8,000 | Covers evening use for a small household |
| 10kWh (e.g., Tesla Powerwall 3) | $10,000 – $15,000 | Covers evening and overnight for average household |
| 13.5kWh | $12,000 – $18,000 | Full overnight coverage for larger household |
Tip: Batteries rarely make financial sense purely on electricity savings alone (the payback is 8–12 years vs 3–5 years for panels alone). They're most valuable for blackout protection, time-of-use tariff optimisation, and households that use most electricity in the evening.
What's Included in the Price
A quality solar installation should include:
- Solar panels (tier 1 recommended: Jinko, Trina, LONGi, Canadian Solar, QCells)
- Inverter (string inverter or microinverters)
- Mounting hardware and racking
- All electrical wiring and switchboard connection
- Meter reconfiguration (if needed)
- STC paperwork and rebate processing
- System monitoring setup
- CEC-accredited installer workmanship warranty (minimum 5 years)
What Affects the Price?
- Panel quality — Budget panels ($0.30–$0.40/W) vs premium panels ($0.50–$0.70/W). Premium panels (REC, SunPower, Maxeon) offer better efficiency, longer warranties, and better performance in shade.
- Inverter choice — String inverters ($1,000–$2,500) vs microinverters ($2,000–$4,500 for a typical system). Microinverters (Enphase) perform better with shading but cost more.
- Roof type — Tile roofs are standard and cheapest to install on. Metal roofs are slightly cheaper. Flat roofs need tilt frames (add $500–$1,500). Slate or asbestos roofs require specialist handling.
- Roof access and height — Single-storey is standard. Two-storey adds $500–$1,000 for scaffolding. Three-storey or difficult access can add $1,000–$3,000.
- Switchboard upgrade — Older switchboards may need upgrading to accommodate solar. This adds $300–$1,500.
- Meter changes — Some electricity retailers require a new smart meter for solar. Cost: $0–$500 depending on your distributor.
Solar Panel Cost by City
| City | 6.6kW System (after rebates) | Annual Savings (est.) | Payback Period |
|---|---|---|---|
| Sydney | $5,200 – $8,500 | $1,400 – $2,200 | 3 – 5 years |
| Melbourne | $5,000 – $8,000 | $1,100 – $1,800 | 3.5 – 5.5 years |
| Brisbane | $4,800 – $7,800 | $1,500 – $2,400 | 2.5 – 4 years |
| Perth | $4,500 – $7,500 | $1,500 – $2,300 | 2.5 – 4 years |
| Adelaide | $4,500 – $7,200 | $1,400 – $2,200 | 3 – 4.5 years |
Brisbane and Perth benefit from higher solar irradiance (more sunshine hours), leading to faster payback periods.
The STC Rebate Explained
The federal STC rebate is the main reason solar is affordable in Australia. Here's how it works:
- When you install solar, your system generates STCs based on its size and location
- The installer buys these STCs from you (or gives you an upfront discount)
- For a 6.6kW system, the STC discount is approximately $2,500–$3,500 in 2026
- The STC scheme reduces by one-fifteenth each year until it ends in 2030
Warning: The STC rebate decreases every January 1st. Installing sooner means a larger rebate. By 2030, the scheme will be fully phased out.
Tips for Choosing a Solar Installer
- Use a CEC-accredited installer. This is mandatory for STC rebates and ensures quality standards.
- Get 3 quotes. Solar pricing varies widely. Compare panel brands, inverter types, and warranty terms, not just the headline price.
- Check the warranty stack. You want: panel performance warranty (25 years), inverter warranty (5–12 years), and installer workmanship warranty (5+ years).
- Avoid door-to-door salespeople. Solar sold door-to-door is typically 30–50% more expensive than getting quotes directly.
- Check reviews. SolarQuotes.com.au and Google Reviews are the most reliable sources for installer reviews in Australia.
Are you a solar installer? RipperQuote lets you voice-describe the job and sends a branded PDF with your prices. Start quoting faster with RipperQuote.
The First Quote Sent Usually Wins the Job.
Stop losing jobs to tradies who quote faster. Start sending in minutes.
Get Started Free