Up to $7,000 in solar and battery rebates. One Why Solar Approved installer. One expert call before you sign.

A quality 6.6 kW solar system costs $5,000 to $9,000 after federal STC rebates. Prices vary by state, panel brand, and installer. Premium systems with micro-inverters or panels from Tier 1 manufacturers like Jinko, Trina, or LONGi sit at the higher end. Make sure your installer is SAA-accredited and has a strong track record.

The federal Small-scale Technology Certificate (STC) rebate provides $1,480 to $2,010 off a 6.6 kW system depending on your zone. The Cheaper Home Batteries program offers around $2,584 off a 10 kWh battery (tiered rates apply since 1 May 2026; the first 14 kWh receives 100% of the STC factor, then 60%, then 15%). Some states offer additional rebates: the ACT has interest-free loans and SA runs the REPS VPP scheme. STC values decrease each year, so acting sooner locks in a larger discount.

A battery is worth it if your electricity rate is above 30 c/kWh, your feed-in tariff is below 8 c/kWh, and you use most of your power in the evening. A 10 kWh battery typically costs $10,000 to $14,000 before rebates and can save $1,000 to $1,800 per year by shifting solar energy to peak hours. Payback is usually 6 to 9 years, and most batteries carry a 10-year warranty.

Most Australian households see payback within 3 to 5 years for a standard 6.6 kW system. The exact timeframe depends on your electricity usage, feed-in tariff rate, self-consumption ratio, and system cost. Homes that use more power during the day pay off faster. Adding a battery extends payback slightly but increases long-term savings.

Feed-in tariffs in 2026 range from 3 c to 12 c per kWh depending on your state and retailer. Queensland and NSW typically offer 5 c to 8 c, Victoria 4.5 c to 7 c, and South Australia 5 c to 10 c. Rates change regularly, so compare plans on the Why Solar feed-in tariff comparison page for the latest rates in your area.

Look for SAA (Solar Accreditation Australia) accreditation, strong Google reviews (4.5+ stars), at least five years in business, and Tier 1 panel brands in their quotes. Ask for a site-specific design, not a generic package. Avoid door-to-door salespeople and anyone demanding large upfront deposits. A quality installer will stand behind their work for the long term.

A typical Australian household uses 15 to 25 kWh per day and needs a 6.6 kW system (16 to 20 panels). Larger homes, pools, or electric vehicle owners may need 10 kW or more. The right size depends on your roof space, orientation, shading, and how much you want to offset. A good installer will size the system based on your actual electricity bills.

Yes. Solar panels still generate electricity on overcast days, typically producing 10% to 30% of their rated output. Australia averages 4 to 6 peak sun hours daily depending on location, which is more than enough for strong returns. Modern panels are designed to perform well in diffuse light. Rain also helps by keeping panels clean.

Not from installers. One Why Solar Approved installer receives your details, and only after you've seen your rebate estimate. They don't cold-call you. The one call you get is from our solar expert, at a time you choose.

An installer has passed all six of our checks: credentials, staying power, proof of work, who actually turns up to do the job, what goes in, and how they handle trouble. They earn it before they see a single homeowner, and they lose it if they let one down. Installers who don't measure up are removed from the network.

Andy McMaster and Bec Ramirez. We're not an installer, we're not owned by one, and we're not owned by an energy retailer. We live off-grid on solar and batteries, and we built this site from that property. Our service is free for homeowners; the installer pays us a fee when you choose them, and they lose their place in the network if they let you down.

Fifteen minutes with one of our solar experts, and it's part of every match. We go through your rebate, your quote line by line, what to push back on, and whether a battery makes sense for your home. No selling, because we have nothing to sell you.