In Australia, the question are home batteries are worth it or not, depends on how you use energy in your home, what you pay for electricity, and what you need a battery to do. There is no easy answer, for some households a battery pays for itself over time and for others the numbers don’t stack up.Here we will explain what a home battery does, and how you can benefit by installing one on your home. We’ll also look how battery systems help you store your solar energy, use it when electricity prices peak and stay powered during outages.

What does a home battery do?

A home battery stores the extra electricity that has been generated by your solar panels during the day, so you can use it later when the sun has gone down. Without a battery, the extra energy is exported to the grid, usually at a feed-in tariff rate that can be paid back to you at a lower rate, than what you would pay to buy the electricity back during the peak evening hours.

A battery stores the extra energy and lets you use your own solar instead of drawing from the grid. Some batteries can also provide backup power during grid outages, though not all systems include this feature, it can depend on the equipment and how the system is designed.

A battery doesn’t generate energy it stores the energy your solar panels have already produced. With smart technology you can also store energy from the grid when the tariff is lower and solar generation doesn't cover your usage, which maximises the savings on your electricity bill.

What value does a home battery provide?

Every kilowatt-hour of solar energy you store in your home battery and use yourself is a kilowatt-hour you don’t have to buy from your energy retailer at the full rate. The more value you receive depends on how big the gap is between your electricity rate and your feed-in tariff. 

Batteries can also help if you’re on a time of use tariff, these plans can charge more for electricity during peak periods. But, by using your stored solar energy instead of buying peak-rate power, you can avoid the most expensive electricity fees for the day. In addition, if your suburb continues to experience grid outages, a battery with backup capability can keep your household essential running.  

There is also the opportunity to join a program that allows the battery to run as a virtual power plant (VPP), this is when your battery feeds the energy back to the grid during peak times in exchange for credits or payment with your energy retailer. These programs vary state by state and by provider, and the returns you receive may change. All Zelora batteries have VPP capability, if you are interested in joining a VPP, now or in the future, then we recommend you invest in a battery with VPP capability. 

Things that may affect if a battery is worth it.

No two Australian households are the same, which is why batteries vary so much. The capacity, cost or usage are some key factors that shape if a battery makes sense for your household. 

Your electricity rate and feed-in tariff.

The wider the gap between what you pay for grid power and what you receive for exporting the energy, the more likely it is that you would benefit from a battery. If your feed-in tariff is already high, the savings you receive from storing energy would be smaller. 

Your energy usage patterns.

Australian households that use most of their energy during the evening or overnight, for cooking, heating, running appliances after work, or charging an electric vehicle, will see the benefits as that’s when your stored solar energy can be used replacing the expensive grid electricity.

System size and solar generation.

A battery stores the extra energy your solar panels produce during the day and can store energy from the grid. To get the most out of your solar generation it is important to understand how much generated, verses how much you use to ensure the battery is the right size. That's where our two-minute online form can help, and our team of experts that will check to make sure you get the right size. 

Battery capacity and cost.

Larger batteries store more energy but can cost more upfront, unless you choose an alternative payment method, like finance or subscriptions where your initial upfront payment is reduced. Your provider can estimate the correct battery size based on your actual household usage. On the other hand, if your battery is oversized you could be paying for capacity you don’t require.

For help matching the battery size to your household, see our battery sizing guide, or complete our two-minute online form. 

Your tariff structure.

Time of use tariffs increase your battery savings, as you’re avoiding the highest priced electricity. Flat rate tariffs still provide you with savings, but the difference per kilowatt-hour is smaller. Read more about the different tariff options. 

When a home battery may not be worth it.

A battery may not be the right move for every household, and working with your provider is important in making a final decision.  

Households with lower energy usage may not see value in a home battery. If your electricity bills are already low, the savings over a year that a battery delivers may not offset the cost.

As battery technology and pricing continue to evolve, some homeowners choose to install solar now and add a battery later. That can be a good choice, however, ensure that the solar panel system is installed so it can support a battery in the future. 

Home battery vs no battery

Comparing the two options side by side can help with your decision. The table below outlines what you can expect with and without a battery added to a solar panel system.

Frequently Asked Questions

Do home batteries pay for themselves?

It depends on your electricity costs, usage patterns, and the price you pay for the battery. Some households see a return of the battery’s cost, before the warranty period is over, others may not fully recoup the cost. Reviewing costs and your own energy data will give you a clearer picture than relying on any general estimates. Zelora experts can help you calculate if this is worth it for your home by using our two-minute online form.

Who benefits most from home batteries?

Australian households with high energy use in the evening, time of use tariffs, and a solar panel system that generates more than they use during the day will see the strongest returns. People who value energy freedom or live in an area with unreliable grid supply, may find a battery worthwhile.

Are home batteries worth it without solar panels?

A battery on its own can be used to buy and store cheap off-peak grid electricity, allowing you to use it during peak hours. However, the savings are smaller, and the payback period is long. Batteries deliver the most value when combined with solar panels, because you’re storing energy you generated for free.

How long do home batteries last?

Most home batteries come with a 10-to-15-year warranty, and are expected to outlast that period, but you may find a gradual decline in capacity. The lifespan of a battery depends on how heavily it is used, the operating temperature, and the quality of the equipment.

Can I add a battery to my existing solar system?

Many existing solar installations can be retrofitted with a battery, though you may need to upgrade the inverter or install a hybrid inverter to make it work. A qualified installer can assess the compatibility and advise on the best setup for your home. For more details, see our battery sizing guide.

Is there a way to get a battery without paying upfront?

Some providers offer a subscription or leasing plan, where you pay a monthly or weekly fee instead of an upfront lump sum. This can make battery storage accessible to more Australians without the large initial outlay. However, the total cost of the equipment through a plan, over the term could be higher than purchasing it outright.

Making the final decision

Rather than asking if home batteries are worth it in Australia, it’s easier to ask if a battery is worth it for your household.

Look at how much you’re paying for electricity, what tariff structure you’re on, and what your feed-in credits are. Then consider your usage, what time of the day do you use the most power, and how much solar energy you are exporting.

Your next step would be comparing the cost of a battery against the yearly savings a battery could deliver based on your household profile, not on industry averages or marketing examples.

Factors of non-financial benefits include access to backup power, reduced reliance on the grid, and the flexibility to participate in VPP programs are all considerations that should be considered.

Finally, think about your options for how to pay. If the upfront cost is a barrier, explore if a subscription or payment plan could make the decision.

The right answer is the one that fits your home, your energy usage, and your financial circumstances.