Solar

Solar in Australia: Costs, Rebates & What's Worth It in 2026

Australia has the highest rooftop solar uptake in the world. Whether you're buying your first system or upgrading, here's the current state of play.

Stats updated: 2026-10-18

AUD $5,500 - $7,500
Average 6.6kW System Cost
After federal rebates
AUD $8,000 - $12,000
Average 10kW System Cost
After federal rebates
AUD $0.88 - $1.40/W
Average Cost per Watt
Installed, after STCs
AUD $1,700 - $2,100
Federal STC Rebate (6.6kW)
Approximate upfront value

Is solar still worth it in Australia in 2026?

Yes, for most Australian homes with adequate roof space and daytime electricity usage, solar remains a highly valuable investment in 2026. While feed-in tariffs have generally decreased, the primary financial benefit now stems from self-consuming your generated power, significantly reducing reliance on grid electricity which can cost around 36.73c per kWh in Sydney. The federal Small-scale Technology Certificate (STC) rebate continues to provide a meaningful upfront discount, making the initial outlay more accessible for homeowners.

How much does a solar system cost in Australia in 2026?

As of October 2026, a professionally installed 6.6kW solar system typically costs between AUD $5,500 and $7,500 in most Australian states after federal rebates. For larger households or those with high energy demands, a 10kW system generally ranges from AUD $8,000 to $12,000 installed. These figures include GST and the federal STC discount, which is usually applied by installers as an upfront reduction to the system price.

What size solar system do I need for my home?

The most popular residential solar system size in Australia for 2026 is 6.6kW, commonly paired with a 5kW inverter, which is suitable for most average family homes. For households with higher energy consumption, such as those running pools, electric vehicles, or ducted air conditioning, a 10kW or even 13.2kW system is increasingly recommended. To determine your ideal system size, it is best to review your electricity bills for your daily average consumption and consider your available roof space and any future plans for battery storage.

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