6.6kW Solar Starter Package
Start using your roof to supply more of your everyday electricity. MJM Solar’s 6.6kW Solar Starter Package is a practical starting point for Perth homeowners comparing their first solar installation. We assess your electricity use and roof before recommending the equipment and layout.
A 6.6kW solar system in Perth can suit a home with useful daytime demand and enough suitable roof space. The right choice depends on when you use electricity, not simply the number of bedrooms. Send us a recent bill and your suburb to start your assessment.

Package Overview
Package detail and proposed configuration for a typical 6.6kW design. Every figure is confirmed in your site-specific quote.
6.6 kW package; exact array rating and panel count shown in your quote
5 kW inverter, with final model selected for the array and property
Solis, Sigenergy, GoodWe, FoxESS, subject to model suitability and availability
Roof mounting, electrical work and commissioning as itemised in your site-specific quote
Optional; separately specified and priced
Request a quote for your property and selected equipment
Right Size
Think about the appliances you can run while the sun is up: a home office, washing machine, pool pump or daytime cooling. Using some of your solar electricity as it is generated can reduce the amount you buy from the grid. A household that is empty most weekdays needs a different assessment from one with regular daytime activity.
If an electric vehicle or a switch to electric hot water is planned, include it in the discussion. Compare the 10kW family package before deciding whether the smaller system has enough capacity for your likely future use.
Appliances you can run while the sun is up.
The installed price depends on the selected panels and inverter, roof access, mounting arrangement, cable routes, and any switchboard work. Ask for an itemised quote so you can compare the same scope across different offers.
Your quote should show the total payable, GST treatment, any eligible solar incentive applied, and the conditions behind that incentive. Battery storage and any extra electrical work should be identified separately. A low headline figure is only useful when its inclusions match your home.
≈29 kWh / day
Illustrative Perth annual average
An illustrative Perth annual average is about 29 kWh/day, using the Australian Government benchmark. Actual output varies; request a site-specific monthly forecast.
Roof Planning
Panel wattage determines the panel count. For example, 15 panels rated at 440 W total 6.6 kW; this is a sizing example, not a fixed panel selection. The final plan needs to fit the chosen module dimensions around roof edges, obstructions, and shaded areas.
The 5 kW inverter rating describes its AC output, while 6.6 kW describes the panels’ combined DC rating.
Your design should explain this pairing and any limits on exporting electricity to the grid.


Optional Storage
A battery may help move surplus daytime solar into evening use. Its value depends on how much surplus you have, your evening demand and the additional installed cost. Battery capacity is measured in kWh and is chosen separately from the solar panel rating.
A standard solar installation does not automatically provide power in a blackout.
Discuss solar battery storage when choosing the inverter. Backup needs a compatible system and the appropriate electrical arrangement.
How It Works
01
Share your bill, suburb and any plans for new electric appliances.
02
Review the proposed roof layout, equipment, monthly generation estimate and itemised quote.
03
Agree the installation scope and connection requirements, then receive the system documents and operating guidance at handover.
FAQ
Still have a question about your 6.6kW design? Call 0475 404 818 or send MJM Solar an enquiry.
Not necessarily. You may still buy electricity at night or when solar production is low, and fixed charges can remain. Compare a realistic usage-based estimate with your current bill rather than assuming all generation becomes savings.
Possibly, but expansion depends on roof space, the existing inverter, electrical design, and connection conditions. If expansion is likely, discuss it before installation so the first design considers that goal.
Compare how much additional generation you would use, the extra installation cost, and the usable roof area. MJM can assess both options against the same electricity-use information. See the 10kW solar package.
Free Site-Specific Quote
Tell MJM Solar what you want your system to achieve. Explore our residential solar installation service or call 0475 404 818 to discuss your home.