How Much Do Solar Panels Cost in Perth? [2025]

With an average of 5.3-5.8 hours of peak solar-worthy sunshine every single day, Perth is one of the best places in the country to install solar panels. It’s no wonder then, that as electricity prices continue to rise, more Perth homeowners are turning to solar energy as a sustainable and cost-effective solution.

But what are the actual costs involved, and how can you maximise your investment? This cost guide covers everything you need to know about solar panel costs in Perth, including: 

• Why choose solar in Perth?

• How much does solar cost in Perth 

• What solar rebates are available in Perth 

• What solar output do I need?

• Environmental and financial benefits of solar panels

• How to future-proof your solar investment

• How to choose the right solar panel installer in Perth 

Why choose solar in Perth? 

Perth is the sunniest capital city in Australia and is the perfect choice for investing in solar. This natural advantage means that well-positioned solar panels can generate significant electricity, reducing reliance on the grid and lowering energy bills. 

To maximise your power output, we recommend orienting your panels to the North as this is where Perth gets the most sun from. Any good solar installer will give you tips like this, so make sure you choose one with plenty of experience to maximise your investment.

How much does solar cost in Perth?

Solar panel costs can vary depending on where you are in Australia - with Perth solar pricing being slightly different to what you can expect in Sydney, Brisbane or Adelaide. 

Like most home improvement jobs around the country, solar panel installation costs in Perth vary depending on a lot of things: system size, equipment quality, solar panel brands, and any unusual installation issues such as steep roofs or tricky access. On average (including any rebates) you can expect to pay the following prices for different solar system sizes:

Solar system size	Average solar system prices	Average daily solar panel output
3kW capacity	$3,990	12-13 kWh daily solar output
5kW capacity	$5,225	20-22 kWh daily solar output
6.6kW capacity	$5,420 - $6,270	28-30.5 kWh daily solar output
10kW capacity	$9,500	40-44 kWh daily solar output

 

What solar rebates are available in Perth?

Good news for Perth homeowners! You could snag up to $2,500+ in rebates for a 6.6kW setup as long as you use Clean Energy Council accredited installers and an approved system. This is thanks to the Small-scale Renewable Energy Scheme and is usually already rolled into the price you’re quoted.

Read more: Solar rebates currently available in Australia

What solar output do I need?

The right solar output for your home depends on your daily electricity usage, when you use power, and your potential future energy needs. A typical Aussie home uses 15–20 kWh per day, meaning a 5–6.6 kW system is usually fine.

However, a lot of people opt for 6.6 kW as the most popular choice since it balances cost, efficiency, and potential future energy demands.

Larger systems (8–10 kW) are a great choice for high-energy users, if you have a battery alongside your panels, or if you’re planning to charge electric vehicles on the regular.

Always ask a professional solar installer for their advice. They should be able to provide you with detailed advice and guidance on the best system for your needs, the payback period (how long it will take for your investment to pay off), and the average amount of electricity your system is likely to generate). 

Environmental and financial benefits of solar panels

By making the most of the sun’s energy, you reduce reliance on fossil fuels, cut carbon emissions, and help combat climate change. A well-sized solar system can slash household CO₂ output by several tonnes each year, the equivalent of planting dozens of trees annually.

Switching to solar isn’t just great for the environment, it’s a big win for your wallet too. Government rebates, feed-in tariffs, and battery grants can significantly reduce the upfront cost, while long-term savings on electricity bills make it a smart investment. Plus, adding solar can increase your property value and make your home more attractive to eco-conscious buyers.

Feed in tariffs

This is the amount you’re paid for any extra solar energy you send back to the grid. Right now, Synergy pays 10c per kWh for power between 3 pm and 9 pm, and 2.25c per kWh for energy sent to the grid at other times. Rates can fluctuate a lot. 

Solar energy savings

Annual solar system savings vary depending on the size of the system, but expect to see savings of around $856 for a 3kW system, all the way $2,852 for a 10kW system.

Payback period

The payback period is the time it takes for your solar system to pay for itself through energy savings. It’s how long before the money you save on electricity bills equals the upfront cost of installing the system.

In Perth, the average payback period is three to five years, but this can vary based on:

• Energy consumption: Homes that use more solar power during the day will see faster returns

• System size: Larger systems generate more power, increasing savings but also costing more upfront

• Electricity prices: Rising power costs can shorten the payback period as solar savings increase

• Government incentives: Rebates and feed-in tariffs can help reduce upfront costs and super charge payback time

Once your system has paid itself off, the electricity it generates is essentially free. Meaning decades of savings if you keep your system well maintained and running well.

How to future-proof your investment

Getting solar panels installed is a great step toward making your home more environmentally friendly and cutting down your electricity bills. But with a few smart choices, you can maximize your investment and ensure your system stays efficient for years to come.

Solar battery storage

Adding a battery allows you to store excess solar power, increasing self-consumption and reducing reliance on the grid. This means bigger savings and backup power during outages. In some cases, you might not need external power at all. The WA government has announced a proposed $5,000 battery grant, making it easier for homeowners to add storage and supercharge their solar savings.

Smart solar inverter

A smart inverter optimises energy management, ensuring your system runs efficiently while adapting to changing grid requirements. These inverters help distribute power more effectively, allowing you to make the most of your solar energy.

System scalability

If you’re planning to extend your home in the future, make sure your inverter can handle additional solar panels. A scalable system means you won’t need costly upgrades later on. Proper planning now ensures your solar setup grows with your energy needs.

Choosing the right solar installer in Perth 

Choosing the right solar installer isn’t just about getting panels on your roof, it’s about making sure your system works efficiently (and saves you cash) for years to come. Here’s what to look for:

• CEC accreditation: Make sure your installer is accredited by the Clean Energy Council (CEC). This guarantees they meet industry standards
• Proven experience: Look for a company with a solid track record, particularly in Perth’s climate. Local experience matters
• Solar panel warranties & Guarantees: Compare product warranties and installation guarantees. A good installer stands by their work
• Customer reviews: Read online reviews and ask for recommendations. A well-reviewed installer is usually a safe bet. If you’re using hipages, you’ll see reviews and ratings on every tradie’s profile 
• After-sales support: Check if the company offers ongoing maintenance and support. Solar panels aren’t set and forget, they need to be cleaned and maintained 

Take your time, do your research, and choose an installer you can trust. It’ll make all the difference in getting the most from your solar investment. To get connected with potential solar panel installers near you, post your job on hipages and get up to 3 quotes fast.