Solar & Battery information


How does it work?

Solar panels are generally fitted on the roof in a northerly direction and at an angle to maximise the amount of sunlight that reaches the panels.

Solar PV panels on the roofs of homes and businesses generate clean electricity by converting the energy in sunlight, a relatively simple process that requires no moving parts. In most cases, solar panels are connected to the mains power supply through a device called an inverter.

How much power do they generate

The output of a solar system depends on its size. The table below shows the average daily production of some common grid-connected systems.

A typical Australian house consumes around 18 kilowatt hours (kwh) per day.

What size system

Your electricity bill outlines your household’s daily electricity consumption in kilowatt hours (kph). From this figure, we can identify what size system you require to cover your electricity needs.
The size of your solar PV system will also depend on:

  • The physical unshaded area available for the installation of your panels on your roof;
  • How much you are prepared to spend; and/or
  • What portion of your electrical consumption you wish to generate.

This process can be completed by Green Way Projects during the design and specification stage.

Battery information

While home battery storage is still in its infancy here in Australia, it’s widely anticipated that it will only be a matter of time before batteries are nearly as commonplace as solar panels. Instead of sending excess energy into the grid, battery storage will store it for use at any time.

You can refer to the list of battery products we recommend.

Return on investment (ROI)

The ROI for your system will depend on your electricity usage and the installed system size. However, a well-designed system typically will have a payback period of approximately 5-6 years.

When designing your system, we will analyse your usage and needs against the required system size, and estimate your payback period.