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Sonergy delivered a seamless installation experience, with punctual and informative installers who even helped set up the app for easy monitoring. Their responsive support before and after installation makes them highly recommended for anyone considering solar.
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It has been an excellent journey with sonergy, very easy and convenient. Sharik was very helpful throughout the journey.
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In 2026, solar system prices in Australia after the federal STC rebate typically range from $3,500 to $7,000 for 3–5 kW systems, $4,000 to $9,000 for 6–8 kW systems, and $6,000 to $15,000+ for 10 kW+ systems. A 6.6 kW system — Australia's most popular size — costs approximately $7,000–$8,000 fully installed after the STC rebate. The exact price depends on panel and inverter brand, roof type, installation complexity, and your location.
The right solar system size depends on your household electricity consumption. Most Australians use between 15 and 40 kWh per day. A 6.6 kW system suits homes with quarterly bills of $300–$500 and moderate daytime usage. A 3 kW system suits small households using under 15 kWh/day, while a 10 kW+ system is ideal for larger families with EV charging or pool pumps.
Most solar systems in Australia pay for themselves in 4–7 years. For a typical Melbourne household installing a 6.6 kW system at around $6,500 after rebates, annual savings of approximately $1,400 can deliver a payback period of under five years. Payback periods vary by location — Adelaide and Darwin have the fastest payback times, while Melbourne and Hobart are slower due to lower solar irradiation.
There are three main types of solar inverters available in the Australian market. String inverters are the most common and economical option, connecting multiple panels in a series. Microinverters are installed on individual panels for better panel-level performance and monitoring. Hybrid inverters combine solar conversion with battery management, allowing you to add battery storage at installation or later. For most homes planning future battery installation, a hybrid inverter is the most cost-effective long-term choice.
The working life of a solar panel should exceed 25 years, with most quality panels carrying a 25-year performance warranty. Product warranties (covering materials and workmanship) typically run 10–15 years, while performance warranties guarantee a minimum power output — usually around 87% of rated capacity at year 30. Inverters usually have shorter warranties of 5–10 years and may need replacement during the system's lifetime.
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