The best protection is a clear process. Run through these ten checks before you choose an installer or pay a deposit.
Mistakes 1–3: Starting with the wrong numbers
1. Comparing only the headline system price. Ask what equipment, electrical work, approvals and warranties are included.
2. Accepting generic savings promises. Estimates should reflect your own usage, tariff, roof shading and how much solar you'll use at home.
3. Assuming the biggest system is best. Larger arrays can be great in the right situation, but extra exports and roof limits can change the economics.
Mistakes 4–6: Missing the technical details
4. Ignoring shade and roof condition. Trees, neighbouring buildings, orientation and roof repairs can all change a design.
5. Not checking network and export requirements. Export limits or connection rules can affect what the system is worth.
6. Not asking about the inverter, panels and monitoring. Get the exact models and a clear plan for after-sales support.
Mistakes 7–8: Overlooking people and protection
7. Not checking installer and retailer credentials. Use government and regulator consumer guidance to understand current requirements, accreditations and responsibilities.
8. Assuming every warranty covers everything. Know the difference between product warranties, performance warranties and installation workmanship cover.
Mistakes 9–10: Rushing the financial decision
9. Not checking the final price you'll pay after eligible incentives. Ask for a transparent cost breakdown.
10. Signing because a salesperson says the offer expires today. Take your time to compare proposals and ask your questions in writing.
A calmer way to make a decision
First, understand your household's energy pattern. Second, check that your roof and an indicative design stack up. Third, compare detailed quotes using the same assumptions.
If the numbers don't support solar yet, waiting is a perfectly sensible call.
Explore the numbers for your own home
Generic savings claims can't account for your roof, your electricity plan or your daily habits. EnergyBrain gives you an indicative, personalised solar report so you can compare before committing. No pressure, and no installer calls required.
Frequently asked questions
How many solar quotes should I get?
The Australian Government Solar Consumer Guide recommends comparing options carefully. Where practical, get multiple comparable written quotes.
What should be included in a quote?
Equipment models, system layout, generation assumptions, inclusions and exclusions, final price, warranties and installation responsibilities.
What is the biggest solar mistake?
There's no single answer. Buying before you understand your own roof and energy use is a common reason people end up with a poor fit.
Keep reading
Independent resources
Editorial note (October 2026): Financial examples are explanatory, not quotes or guaranteed savings. Rates, prices, rebates, installation requirements and incentives must be checked again for the date and location of any proposed installation. This article provides general information, not personalised financial advice.