Getting solar quotes can feel confusing, especially when every installer promises the best deal. Yet, not all quotes are equal. Understanding how solar quotes work — and what to check before you sign — can save you thousands and help you choose a system that performs for decades.
Here’s everything you need to know before you buy.
What Is a Solar Quote?
A solar quote is a detailed proposal that outlines equipment, price, rebates, and expected performance for your solar system. Most quotes include:
- System size (in kilowatts)
- Panel and inverter brands
- Installation costs and warranties
- Government rebate deduction (STCs)
- Estimated daily and yearly savings
Although every installer provides a quote, the quality of the information — and the transparency — can vary widely.
How Solar Quotes Are Calculated
Solar quotes in Australia combine several key factors:
- System size (kW): Larger systems generate more power but cost more upfront.
- Equipment brand: Premium panels like SunPower or REC cost more but last longer.
- Installer pricing: Labour, travel, and roof complexity affect the final cost.
- Government rebates: The national STC rebate reduces upfront costs by thousands.
You can calculate your rebate using the official STC calculator here:
https://www.rec-registry.gov.au/rec-registry/app/calculators/sgu-stc-calculator
Once rebates are applied, a 6.6 kW system in 2025 typically costs between $5,000 and $7,000, depending on your state.
To check real costs by state, see:
Solar Cost in Australia 2025
Why You Should Compare Multiple Quotes
It’s tempting to accept the first quote that sounds good, but comparing at least three options can reveal big differences in:
- Price (variations of $1,000–$2,000 are common)
- Equipment quality
- Warranty coverage
- Customer reviews and reliability
By comparing, you avoid overpaying and can identify which installer offers real value — not just a flashy deal.
You can easily compare verified quotes here:
Get Free Solar Quotes from Solar Proof
What to Check in Your Solar Quote
Before you commit, review every quote carefully. Make sure it includes:
1. Panel Brand and Model
Not all panels are created equal. Premium options like Qcells, REC, or SunPower offer higher efficiency and longer warranties than generic brands.
2. Inverter Brand
The inverter is your system’s heart. Brands such as Fronius, SMA, and Enphase are proven to perform well in Australian conditions.
3. System Size and Estimated Output
A 6.6 kW system should generate around 24 kWh per day on average. If your quote promises much more, double-check the assumptions.
4. Rebate and Total Cost
Ensure the quote lists your STC rebate and the final price after deduction. Unclear pricing is a red flag.
5. Installer Accreditation
Always confirm your installer is CEC-accredited (Clean Energy Council). Without this, your rebate may be invalid.
6. Warranties
Look for:
- 25-year panel performance warranty
- 10- to 15-year product warranty on panels and inverters
- 5-year minimum workmanship warranty
7. Payment Terms
Avoid large upfront deposits. Reputable companies request payment only after installation or completion milestones.
Common Solar Quote Mistakes to Avoid
Even savvy homeowners make errors when reviewing quotes. Watch out for:
- Unbranded panels sold as “Tier 1” without proof
- Low-ball pricing that excludes electrical upgrades or meter changes
- Missing warranty details or vague service agreements
- High-pressure sales tactics with “today only” deals
Taking a few minutes to verify details now prevents expensive regrets later.
Pro Tips for Comparing Solar Quotes
- Ask for itemised pricing for panels, inverters, and labour.
- Check efficiency ratings — anything below 19% may not be ideal.
- Request performance estimates based on your actual roof orientation.
- Use your address in quote forms to ensure accurate sunlight data.
- Search for reviews of each installer on Google and SolarQuotes.
Additionally, using a trusted comparison platform like Solar Proof ensures only verified, CEC-approved installers compete for your job — not pushy sales agents.
Ready to Find the Right Solar Deal?
Now that you know how solar quotes work, you can make smarter choices and avoid hidden pitfalls. Whether you’re comparing prices, checking rebate values, or choosing between brands, an informed decision leads to better long-term savings.
Start by using the official calculator to estimate your rebate:
https://www.rec-registry.gov.au/rec-registry/app/calculators/sgu-stc-calculator
Then, compare trusted installer quotes side by side:
Get Free Solar Quotes from Solar Proof
With Solar Proof, it’s simple, fast, and transparent — so you can find the best solar deal for your home or business in 2025.
And if you’d like to understand solar pricing by state before requesting quotes:
Solar Cost in Australia 2025 Guide