A 6.6kW solar system is the most popular home solar size in Australia and for good reason. It fits most rooftops, comfortably covers a small-to-medium household’s daytime power, and stays within the single-phase grid limits that keep approval simple. At SolarAide, our 6.6kW system is the Home Starter package, installed across Melbourne and Victoria with the Solar Victoria rebate handled for you.
What a 6.6kW solar system produces
A 6.6kW system in Melbourne generates roughly 26 kWh on a good day, and around 21–24 kWh averaged across the year once you allow for cloudy days and winter. Over twelve months that’s about 9,000 kWh of electricity enough to cover most of the daytime usage of a typical 1–3 bedroom home.
It uses about 15 panels with modern high-wattage modules (older, smaller panels needed 18–20), taking up roughly 28 m² of roof. It pairs with a 5kW inverter, the standard match that stays within network limits while capturing the full federal STC rebate, which is based on panel capacity, not inverter size.
Who a 6.6kW system suits
Small to medium homes
Ideal for 1–3 bedroom households using under about 25 kWh a day.
Lower upfront cost
The most affordable entry into solar, with the fastest, simplest grid approval.
Battery-ready later
A great starting point if you plan to add a battery down the track.
Most roofs fit it
Around 28 m² of unshaded roof is usually easy to find on a standard home.
It’s less suited to homes with ducted air conditioning, a pool, or an EV, if that’s you, a 10kW system is usually the better fit (more below).
What’s included with the SolarAide Home Starter
Every 6.6kW system we install includes tier-1 panels with a 25-year product warranty, a string inverter with a 10-year warranty, the on-site assessment, the Solar Victoria rebate paperwork, the grid application and meter configuration, and monitoring app setup all as standard.
How much does a 6.6kW system cost?
After the federal STC rebate, quality 6.6kW systems in Victoria typically start from around $4,000–$6,000, depending on panels, inverter and your roof. Because your exact price depends on your roof type, orientation and any rebate you’re eligible for, SolarAide quotes it on a quick call rather than a one-size-fits-all sticker and the price we quote is the price on the contract.
How we install it
- Free assessmentWe check your roof, orientation, shading and 12 months of usage.
- System design & quoteA 6.6kW layout sized to your bills, with the rebate applied.
- InstallationMost 6.6kW installs are completed in a single day.
- Switch on & monitorWe handle grid connection and set up your monitoring app.
Frequently asked questions
How many panels is a 6.6kW system?
About 15 panels with modern high-wattage modules, needing roughly 28 m² of unshaded roof. Older, lower-wattage panels needed 18–20.
How much power does a 6.6kW system make per day?
Around 26 kWh on a good day in Melbourne, averaging 21–24 kWh across the year — enough for most small-to-medium homes.
Is 6.6kW enough for my home?
If you use under about 25 kWh a day and don’t have ducted air-con, a pool or an EV, it’s usually a great fit. Heavier users should look at 10kW.
Can I add a battery to a 6.6kW system?
Yes. A 6.6kW system pairs well with a 10–13.5 kWh battery, and we can install it battery-ready so storage is easy to add later.
Get a quote for your 6.6kW system
SolarAide installs 6.6kW solar systems across Melbourne and Victoria, with the rebate handled and a price confirmed on a call. Get a free, no-obligation quote today.