Make the sun work to your schedule.

Here's how it works

Adding a battery to your solar system allows you to store the excess solar energy you generated during the day and access it later, when you need it. It also ensures you have your own power supply during an outage.


You've got power

When your business isn’t using all of the energy your solar panels generate, your inverter tells your battery.

Charge your battery

The battery starts charging and stores the excess solar energy.

Give back

Once the battery is fully charged, excess solar energy is fed to the network.

Save after dark

When your system stops producing solar energy, the inverter starts discharging your battery so your business uses the energy stored during the day.

How to compare battery storage systems

When deciding on a battery, the cheapest system isn’t always the most affordable option. Comparing a battery’s cost against its total energy throughput (how much energy it will deliver over its lifetime) will help you determine which system delivers the best value.

To calculate energy throughput, multiply charging cycles by battery size. E.g. 3,500 charging cycles × 10kWh battery = 35,000 kWh total throughput. 

A charging cycle is the number of times a battery can be fully charged and discharged before it reaches end of life. Some battery retailers offer a warranty guaranteeing either an energy throughput or a lifetime in years, usually based on whichever limit is reached first.

Is solar right for you? Explore your potential savings

Login to MyAccount to view what your personalised savings would be and get tips to maximise benefits. This is where you apply for the reference number to share with your installer so they can get approval to install your system.


Login or register to view your potential savings

Horizon Power acknowledges the Traditional Custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders past, present and emerging.

Aboriginal and Torres Strait Islander people are advised that this website may contain images, names or voices of deceased people.