Error message title
Error message title
Searching great energy plans for you
New smart energy solutions are coming
We're working on what's next for our smart energy offering, coming in early 2027 – stay tuned for updates.
Why do I need a battery?
Maximise savings
You may be able to store excess solar and reduce the impact of peak-rate charges.
Grid independence
Increase your energy independence by reducing your reliance on the grid.
Back up power
Keep essential parts of your home running even when the grid goes down.
Generate extra income
Send excess energy back to the grid and receive credits on your bill.
Increase savings by joining ENGIE VPP
Maximise the benefits and get some extra credits by joining ENGIE virtual power plant (VPP).
Time-of-use tariffs
Pay even less for energy when you use it at off-peak times, when electricity demand is lowest.
Higher grid independence
With an ENGIE VPP you could maximise the benefits of your solar panels and battery, and earn up to $200 in sign up credits.
MyEngie App
With the MyENGIE app, you can manage your account, track your usage and find the help you need anytime, from any device.
Smart energy
You've got the hardware, now let the tech do the hard work for you. Automatically move any energy you produce back to the grid and get more money back in your pocket with ENGIE VPP offer.
Choose the right battery for your home
We only recommend batteries that have the following features to ensure safety and longevity.
- Adequate storage: At least 10 kWh
- Reliable warranty: 10-year warranty that guarantees 70% energy retention after 120 months (10 years) of install for unlimited cycles
- Built-in safety: Certified and protected against heat and water damage
Frequently asked questions
I already have solar, so why do I need a battery?
If you already have solar, adding a battery can significantly increase the value of your system. Solar panels generate electricity during the day, but most households use more power in the evening when the sun isn’t shining. Without a battery, any excess energy your system generates is sent back to the grid, usually for a small feed-in tariff. A battery allows you to store that excess energy and use it later, reducing your reliance on the grid and lowering your electricity bills. It’s particularly useful if you're on a time-of-use plan, helping you avoid expensive peak-hour rates.
Can I get solar, then add a battery later?
Yes, in most cases, you can add a battery to an existing solar setup. Your qualified installer can assess your system and recommend a compatible battery and inverter (if needed) to integrate smoothly with your current setup.
How long does a battery installation take?
A home battery installation typically takes one full day, though the exact duration can vary depending on your system size, property layout, and whether it's a new installation or added to an existing solar setup. Most standard installations are completed within 4 to 8 hours, but the timeframe may be longer if electrical upgrades are needed (like a new switchboard, meter change, or rewiring). Before installation, your provider will usually complete a site inspection or remote assessment to plan the installation and ensure everything is compliant with safety and grid requirements.
Can I get a government grant for battery installation?
Yes, there are a number of rebates and incentives available across Australia to help lower the cost of home battery storage. Starting on 1 July 2025, the Australian government will introduce a national solar battery rebate to cut installation costs by around 30%. The rebate offers up to $372 per usable kilowatt-hour (kWh) of battery storage. You can visit your state government’s energy website for specific details.
How long will a fully charged battery last?
The lifespan of a fully charged home battery depends on its capacity and how much electricity your household uses. Most residential batteries store between 5 to 13.5 kWh of energy. If you’re only powering essentials like lights, a fridge, and Wi-Fi, a 10 kWh battery could last around 24 to 36 hours. However, the battery may only last a few hours if you’re running high-energy appliances like heating, air conditioning, or a dishwasher. In most cases, a fully charged battery comfortably covers evening and overnight use when solar panels aren’t producing power.
How long do home batteries last?
Most home batteries come with a 10-year warranty and are designed to last around 10 to 15 years, depending on usage and conditions. Over time, their storage capacity slightly reduces, but a well-maintained battery will deliver reliable performance for many years. Your installer can advise you further.