Residential

6.6kW Solar and Battery Package

The most popular size for a reason. A 6.6kW array covers a typical family home, and a 10kWh battery carries you through the evening peak. See what is included and who it suits.

  • Around 12 to 15 panels
  • About 25kWh a day (Sydney)
  • 10kWh battery
  • Suits 2 to 4 people*
6.6kW solar array on a tile roof
01

Who a 6.6kW System Suits

A 6.6kW system suits a standard household of 2 to 4 people with a normal daytime and evening routine, one or two air conditioners, and no heavy extra load. It is also the usual choice when roof space or network export limits cap the array.

  • Your bills show roughly 20 to 25 kWh a day.
  • You want to cut your evening grid use without building the biggest system on the street.
  • Your roof has around 25 to 35 square metres of usable, unshaded space.

It is probably too small if you charge an electric car at home most days, run a pool pump all year, or work from home with ducted cooling running. Look at the 10kW package.

Who a 6.6kW System Suits, Frostac install in Australia
02

What Is Included in the 6.6kW Package

  • 12 to 15 solar panels, around 6.6kW in total
  • A hybrid or battery-ready inverter sized for your network's rules
  • A 10kWh home battery. Other sizes are available.
  • Mounting, cabling, switchboard connection and network paperwork
  • App monitoring for generation, usage and battery charge
  • Installation by SAA-accredited installers and workmanship warranty plus manufacturer product and performance warranties
  • Rebates claimed for you*
03

What Shapes a 6.6kW System Quote

Every home and site is different. Your quote reflects your roof, switchboard, energy use, network rules and the equipment you choose, and we set it out in writing after a free assessment so you can compare it line by line.

04

How Much Power Does a 6.6kW System Make?

How Much Power Does a 6.6kW System Make?, Frostac install in Australia

In Sydney a 6.6kW system averages about 25kWh a day across the year*. Brisbane, Adelaide and Perth see more, Melbourne a little less. Winter output is lower than summer, so the annual figure matters more than any single day.

What that means in practice: on a sunny day the array can run your house, charge the battery, and export the rest. The battery then covers your evening and early morning use, which is when grid power costs the most.

05

How the Rebates Apply

Two rebates apply to this package, both delivered as STCs and claimed by us on your behalf.

Solar rebate. Based on the system size, your postcode zone and the years of deeming left. It reduces each 1 January.

Battery rebate. The Cheaper Home Batteries Program. The rate is set by installation date.

Confirm the current rules with the Clean Energy Regulator.

06

Should You Add a Battery to a 6.6kW System?

Solar alone sends your cheapest power to the grid for a low feed-in rate and has you buying it back at a much higher price at night. A battery stores the surplus for use later.

A battery makes the most sense if you are home in the evening, your feed-in tariff is low, or you want backup during outages (backup depends on the inverter and circuits we configure). It makes less sense if you use almost no power after dark.

You can also install the 6.6kW system now and add a battery later. If so, ask for a battery-ready hybrid inverter so you do not pay for a second inverter down the track. Tell us what you have in the quote form and we will check it.

Should You Add a Battery to a 6.6kW System?, Frostac install in Australia
07

6.6kW or 10kW? How to Choose

We check both.

6.6kW10kW
Panels12 to 1518 to 22
Typical daily output (Sydney)~25kWh~38kWh
Suits2 to 4 people, standard useLarger homes, EV, work from home
Roof space needed~25 to 35 m²~36 to 48 m²
Pairs with10kWh battery13.5kWh battery
Equipment

Brands We Install

Panels, inverters and batteries from manufacturers with people on the ground in Australia, because a long warranty is only as good as the company left to honour it.

Solar Panels

Tier-one panels with long product and performance warranties.

Trina Solar logoJinko Solar logoJA Solar logo

Inverters

String and hybrid inverters with Australian support teams.

Fronius logoSungrow logoGoodWe logo

Batteries

Home and commercial storage, battery-ready where it makes sense.

FoxESS logoAlphaESS logoEnphase logo

Brand availability depends on your system design and location. We confirm the selected equipment and manufacturer warranty in your written quote.

Important Information

* Rebate details, output figures and timeframes shown are indicative estimates based on stated assumptions, not an offer, quote or guarantee. Your outcome depends on your site, roof, switchboard, network, products and the date of installation, and your written quote prevails. Savings and payback are not guaranteed. See clauses 24.1 to 24.5 of the Terms and Conditions.

Questions

Common Questions

01What Affects the Quote for a 6.6kW System?
It depends on your home, your site and the equipment you choose, so we confirm it in a written quote after a free assessment.
02How Many Panels Is a 6.6kW System?
Usually 12 to 15 panels, depending on panel wattage. Higher wattage panels need fewer panels for the same kW.
03Is 6.6kW Enough for a Family Home?
For most 2 to 4 person homes, yes. If you also charge an EV daily, run a pool pump or use ducted cooling heavily, consider 10kW.
04What Size Battery Goes With a 6.6kW System?
A 10kWh battery is the usual match. A 5kWh battery works for lower evening use, and a 13.5kWh battery suits homes that use a lot of power after dark. See our home battery size guide.
05Can I Get a 6.6kW System With a 5kW Inverter?
Often yes. Many networks limit the inverter, not the panel array, so a 6.6kW array on a smaller inverter is common. We check your network's rules.
06Will I Still Be Eligible for the Battery Rebate Next Year?
The program runs to 2030, but the rebate per kWh steps down on 1 January and 1 July each year. The rate is fixed by installation date.

Get Your 6.6kW Quote

Send us your postcode and a recent bill and we come back with a clear written quote for the 6.6kW package, with every rebate applied.

Email ussales@frostac.com.au