Your questions, answered
One question per page, answered in 60 words first and the detail after. Built from the questions Australians actually ask, kept current as prices and rebates change.
- How much does a 10kW solar system cost in Australia?A 10 kW solar system costs A$7,500 to A$13,000 installed in Australia as of August 2026, after the federal STC rebate. The range reflects panel tier, inverter brand and roof complexity. Adding a battery typically doubles the total.Read More
- Is it still worth getting solar in Australia in 2026?Yes, but the economics have shifted from exporting to self-consumption. With feed-in tariffs near zero and grid prices high, a well-sized solar system pays back in 3-5 years; solar plus a rebated battery typically pays back in 5-8 years.Read More
- How many solar panels do I need for my home?Most Australian homes install 15-22 panels (6.6-10 kW using 440-475 W panels). Divide your daily electricity usage in kWh by 4 to estimate the kilowatts of solar you need, then add capacity for a battery or EV if planned.Read More
- Is the Tesla Powerwall 2 discontinued?Yes. Tesla stopped selling the Powerwall 2 in Australia after the Powerwall 3 launched in 2024. Existing units remain supported under their 10-year warranties, and the Powerwall 3 is the only new Powerwall sold here in 2026.Read More
- How long do solar batteries last?Modern LFP home batteries last 10-15 years of daily cycling. Warranties guarantee 60-70% of original capacity after 10 years or a set energy throughput, whichever comes first. Chemistry, heat exposure and cycling depth determine which limit you hit.Read More
- What is a virtual power plant (VPP) and should I join one?A VPP is a network of home batteries coordinated by an operator that trades their stored energy on the electricity market, paying you credits or upfront incentives. Joining typically earns A$100-400 a year, in exchange for ceding some control of your battery.Read More
- Single phase vs three phase: what does it mean for solar?Single-phase homes have one live wire from the grid; three-phase homes have three, tripling supply capacity. For solar it decides your inverter type and export limit: many networks cap single-phase exports at 5 kW but allow 15 kW on three-phase.Read More
- Do solar batteries pay for themselves in Australia?In 2026, usually yes. With the federal rebate cutting roughly 30% off hardware, feed-in tariffs near zero and evening rates of 30-45 c/kWh, a correctly sized battery pays back in 5-8 years against a 10-year warranty, faster with a VPP or wholesale tariff.Read More