Thinking About Solar in Perth? Don’t Make These Costly Mistakes

Going Solar Could Save You Money, But Are You Making the Right Choice?

With electricity bills putting pressure on household budgets, more Perth homeowners are considering solar panels as a way to reduce their reliance on grid electricity and enjoy long-term energy savings. Perth’s sunny climate also makes rooftop solar an attractive option for households looking to make better use of natural energy.

But here’s something worth thinking about: choosing solar panels is not just about finding the cheapest quote or installing the biggest system available. It’s about getting the right system for your home, electricity usage and budget.

A poorly planned installation, an unreliable provider or overlooked government incentives could affect the value you get from your investment.

Before you start comparing solar panel installation quotes in Perth, take a look at these seven common mistakes. Avoiding them could help you make a smarter decision and get more from your solar investment.

1. Choosing the Cheapest Solar Quote Without Comparing What’s Included

A low-priced solar package can look attractive, especially when you want to reduce your upfront expenses. However, two quotes offering similar system capacities may include very different products, installation services and warranties.

For example, one Perth homeowner might receive a cheaper quote that excludes switchboard upgrades or additional cabling, while another quote includes these requirements in its total price. The cheaper option may eventually cost more.

How to avoid it:

• Request at least three itemised quotes.
• Compare panel and inverter brands and models.
• Ask whether installation, cabling and electrical upgrades are included.
• Check product and workmanship warranties.
• Confirm whether the advertised price includes applicable discounts.

The important thing is to compare the complete installation cost rather than simply choosing the lowest number.

2. Underestimating Installation and Ongoing Maintenance Costs

Many homeowners focus on the initial solar panel price but overlook expenses that may arise during installation or throughout the system’s life.

Your roof condition, switchboard, meter requirements and cable arrangements can affect installation costs. In Perth, older properties may need additional electrical work before a solar system can be connected.

Solar panels generally require limited maintenance, but that doesn’t mean you should ignore them. Dust, bird droppings, debris and unexpected equipment issues can affect performance.

How to avoid it:

Ask your installer to inspect your roof and electrical setup before finalising the quote. Request a breakdown of possible additional costs and understand what maintenance and after-installation support are included.

A little planning before installation can help prevent unexpected expenses later.

3. Trusting a Solar Provider Without Checking Their Credentials

Perth has plenty of solar companies competing for homeowners’ attention. While more competition gives customers greater choice, it also means you need to do your homework before signing a contract.

A professional-looking website or an attractive discount doesn’t automatically guarantee quality installation or reliable after-sales service.

Imagine a homeowner chooses a provider based on a promotional offer. Later, they discover that the salesperson and installation contractor are different businesses, making it difficult to understand who is responsible for resolving an installation issue.

How to avoid it:

Before choosing a solar installer in Perth:

• Check the installer’s accreditation through Solar Accreditation Australia (SAA).
• Confirm that the electrical work is handled by appropriately licensed electricians.
• Check independent customer reviews and business history.
• Ask who will actually install your solar panels.
• Get warranty conditions and after-sales support details in writing.

The Australian Government also recommends checking installer accreditation and retailer credentials before purchasing a solar system.

4. Overlooking Government Solar Rebates and Incentives

Why pay more upfront if you qualify for government assistance?

One common mistake Perth homeowners make is accepting a solar installation quote without understanding which rebates or incentives may apply.

Australia’s Small-scale Renewable Energy Scheme (SRES) provides eligible rooftop solar installations with Small-scale Technology Certificates (STCs). These are generally assigned to an approved agent or retailer in exchange for an upfront discount on the system price.

There is also the Federal Cheaper Home Batteries Program and the WA Residential Battery Scheme for eligible battery installations.

For example, eligible Synergy customers may access a WA battery rebate of up to $1,300, while eligible Horizon Power customers may qualify for up to $3,800. These are battery incentives, not general cash rebates for solar panels alone.

How to avoid it:

• Ask whether your quote includes the STC discount.
• Check your eligibility for federal and WA battery incentives.
• Confirm whether your installer is an approved vendor where required.
• Check current scheme conditions before signing a contract.

Remember, incentives can change, so always verify the latest eligibility requirements through official government sources.

5. Installing a System That Doesn’t Match Your Household’s Energy Usage

Bigger doesn’t always mean better when it comes to solar panels.

Some homeowners assume that installing the largest available system will automatically deliver the highest savings. However, the right system depends on when you use electricity, how much energy your household consumes and how much suitable roof space is available.

Consider a Perth family that uses most of its electricity in the evening. A large solar system may generate plenty of electricity during the day, but without a suitable battery, much of that excess energy may be exported to the grid rather than used at home.

How to avoid it:

Review your recent electricity bills and discuss your daily consumption with your installer. Consider future requirements, such as air conditioning, an electric vehicle or additional household members.

Choose a system designed around your actual energy needs, not simply the biggest package on offer.

6. Ignoring Roof Direction, Shade and Perth’s Weather Conditions

Perth receives plenty of sunshine, but that doesn’t mean every rooftop is equally suitable for solar panels.

Nearby trees, neighbouring buildings, roof orientation and available installation space can influence how much electricity your system generates. Even partial shading can affect performance, depending on the system design.

For example, a homeowner might purchase an attractive solar package without checking whether a large tree shades part of the roof during important sunlight hours.

How to avoid it:

Ask for a proper roof assessment before installation. Discuss panel placement, shading, roof condition and expected seasonal electricity generation.

A good solar design should consider Perth’s hot summers and changing daylight conditions throughout the year rather than relying on a standard package.

7. Expecting High Payments for Excess Solar Electricity

Here’s something many first-time solar buyers overlook: exporting electricity to the grid doesn’t necessarily earn you as much as you expect.

Western Australia’s Distributed Energy Buyback Scheme (DEBS) provides eligible customers with payments for electricity exported to the grid. However, export rates depend on the applicable retailer and time of export.

The important point is that the buyback rate is generally lower than the residential electricity tariff. Therefore, using your own solar electricity can often offer better value than exporting all your excess generation.

How to avoid it:

Check your electricity retailer’s current DEBS rates and understand how they affect your bill. Consider running appliances such as washing machines and dishwashers during daylight hours when your panels are generating electricity.

A battery may also help you use more of your daytime solar generation in the evening, but compare its additional cost against your expected savings before purchasing one.

Before You Install Solar Panels in Perth: Don’t Skip These Checks

Along with the seven mistakes above, remember that some properties may require additional approvals. For example, heritage-listed properties may need local council approval, while strata properties may require permission from the strata company.

Check these requirements before arranging installation to avoid unnecessary delays or expenses.

Conclusion: Make Your Solar Investment Count

Installing solar panels in Perth can be a smart move for homeowners looking to manage electricity expenses, use renewable energy and improve their home’s energy efficiency. However, the benefits depend on making the right decisions before installation.

Don’t let an attractive discount, an oversized system or an incomplete quote influence your decision. Compare providers, understand available incentives, check your roof and choose a system that suits your household’s energy consumption.

At Solar 365, we understand that every Perth property has different energy requirements. Whether you’re exploring a residential solar system or comparing installation options, getting the right advice is an important first step.

Ready to explore your options? Visit our Solar Panels Perth page to learn more about residential solar solutions and find an option that suits your home and budget.

Make an informed choice today, so you can enjoy greater value from your solar investment tomorrow.