How Much Do Solar Panels Cost in Perth in 2025?

With energy prices continuing to rise and sustainability becoming a top priority, more Perth homeowners and businesses are turning to solar energy. If you're considering making the switch, you're likely wondering:

How much do solar panels cost in Perth in 2025?

In this article, we’ll break down the current costs, what influences pricing, and how to get the best value when investing in a solar power system in Perth.

Average Cost of Solar Panels in Perth (2025)

As of 2025, the average cost to install solar panels in Perth ranges from:

  • $3,000 – $4,500 for a 3kW system

  • $4,500 – $6,500 for a 6.6kW system (most popular for homes)

  • $7,000 – $10,000 for a 10kW system

  • $12,000+ for larger systems or those including battery storage

These prices include government rebates and are based on standard installations with Tier 1 solar panels and a quality inverter.

What Affects Solar Panel Pricing in Perth?

Several factors can influence the final cost of your solar installation:

System Size

The larger the system (in kilowatts), the more it costs upfront — but it also delivers more energy and savings over time.

Panel and Inverter Brands

Top-tier brands like Q Cells, REC, Fronius, or SolarEdge cost more, but offer better performance and longer warranties.

Roof Type & Accessibility

Difficult roof angles, two-story homes, or tile roofing may require additional labour or mounting hardware.

Battery Storage

Adding a solar battery (like Tesla Powerwall or Sungrow) increases cost significantly but offers energy independence and blackout protection.

Installer Reputation & Support

CEC-accredited installers may charge more, but they offer better workmanship, warranty support, and after-sales service — which can save you money long-term.


How Much Can You Save with Solar in Perth?

With Perth’s high solar exposure (over 3,000 sunlight hours a year), even a modest 6.6kW system can reduce your electricity bill by up to 70%.

Here’s a rough savings estimate for a residential household:

System SizeAverage Daily OutputAnnual Bill Savings
3kW11–13 kWh$800 – $1,200
6.6kW25–28 kWh$1,500 – $2,500
10kW35–42 kWh$2,800 – $3,500+

Savings depend on your usage, time of day, and whether you include battery storage.


Is Solar Worth It in Perth in 2025?

Absolutely. With high electricity prices, abundant sunshine, and still-available rebates, solar panels continue to offer strong financial and environmental returns.

Whether you're a homeowner looking to cut energy bills or a business aiming to go green, installing a solar system in Perth in 2025 is a smart move.

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