What’s the 10kW Solar Battery Price in 2025: Full Cost & Payback Guide
Thinking about adding a battery to your home solar setup to save more on energy bills or stay powered during blackouts? You’ve probably seen the popular 10kWh option and wondered what it really costs. The truth is, a 10kW solar battery price in Australia can vary quite a bit, depending on the brand, installation, and whether you qualify for any rebates.
In this guide, we’ll walk you through the costs, what affects them, and whether a 10kW system is the right fit for your energy needs. Let’s break it all down, so you know exactly what to expect.
How Much Does a 10kW Solar Battery Cost in Australia?
The 10kW solar battery price in Australia now sits in the $11,000 – $14,000 range (GST included) for a straightforward, good-quality installation. Prices differ because batteries use different chemistries, some bundles include a hybrid inverter or blackout backup, and regional labour or switchboard upgrades can nudge the quote up or down.
If you don’t already have rooftop solar, you’ll need to budget $8,500 – $13,000 for a quality 10kW PV array (after applying today’s federal STC “solar rebate”). Add the battery, and you’re looking at a total 10kW solar system with battery price of roughly $20,000 to $27,000 before the battery rebate.
To help put things in perspective, here’s how the cost of a 10kW battery compares to some other popular sizes. The prices include GST and installation, but don’t factor in any rebates.
Usable Capacity (kWh) | Installed Price (AUD) | Approx. Cost per kWh (AUD) |
5 kWh | $6,950 – $8,700 | ~$1,380 /kWh |
8 kWh | $10,000 – $11,500 | ~$1,130 /kWh |
10 kWh | $11,000 – $14,000 | ~$1,130 /kWh |
13 kWh | $15,000 – $18,000 | ~$1,050 /kWh |
15 kWh | $15,000 – $18,000 | ~$1,050 /kWh |
Factors Affecting the Price of a 10kW Battery
The best 10kW solar battery price in Australia may look like a single line item on a quote, but half-a-dozen moving parts decide where the final dollar figure lands. Here are the big ones to watch:
Battery type and build
Most home batteries for solar systems now use lithium-iron-phosphate (LFP) chemistry, known for its efficiency, safety, and long lifespan. But they tend to be more expensive than older lead-acid batteries. Better-built batteries with higher safety standards may also cost a bit more upfront.
Storage value
Generally speaking, the more storage you get, the better value you get per kilowatt-hour. Smaller batteries (3–5kWh) can cost over $1,300 per kWh, while 10–15kWh options tend to drop closer to $1,130, and larger systems can get below $1,000 per kWh.
Extras included
Some battery systems, such as those plug-and-play portable power stations, come bundled with extras like hybrid inverters, backup power capabilities, or smart monitoring features. These added functions can offer more convenience and flexibility, which helps justify the higher upfront cost.
Installation complexity
If your switchboard needs an upgrade or your property isn’t battery-ready, installation costs can climb quickly. Some older homes may need significant rewiring or meter box work, which can add thousands to the job.
Location and labor rates
Where you live can affect the overall cost. Urban areas might have more competitive pricing due to the availability of installers, while remote locations could incur additional travel and labor expenses.
Market demand
Battery prices can fluctuate depending on supply and demand. Big announcements (like new rebates or energy price hikes) tend to spark a rush in orders, which can temporarily push prices up.
Rebates and Incentives for Solar Batteries in Australia
Of course, we have to talk about the rebates. Installing a battery is easier on the wallet once you tap into the layered mix of national and state support on offer across Australia:
Federal rebate
The big one is the Cheaper Home Batteries Program, launching 1 July 2025. It’s set to cover around 30% of the installed battery cost, capped at $370 per kWh for systems up to 50kWh. This applies to both new installs and upgrades to existing solar setups—no income testing required.
It’s also stackable with other incentives like STCs (Small-scale Technology Certificates), which still apply to new solar panels.
State-based support
Depending on where you live, you could be eligible for even more help:
Victoria: Eligible homeowners can access an interest-free loan up to $8,800, plus a separate battery rebate up to $2,950.
New South Wales: Through the Peak Demand Reduction Scheme, you might get an upfront discount (around $1,500–$2,000 for a 10kW system), plus additional credits if you join a virtual power plant (VPP).
Queensland: While the Battery Booster rebate is currently fully allocated, there are calls for a fresh round of funding in the next state budget—worth keeping an eye on.
South Australia: The original Home Battery Scheme has wrapped up, but you can still earn annual credits by enrolling in a VPP that shares your stored energy during peak times.
Western Australia: A new rebate program is rolling out in mid-2025, offering up to $5,000 for Synergy customers in Perth and up to $7,500 for Horizon Power customers in regional areas.
Northern Territory: The Home and Business Battery Scheme dishes out $400 per kWh up to $12,000, effectively halving the cost of a typical 10kW battery.
Australian Capital Territory (ACT): Through the Sustainable Household Scheme, eligible households can access interest-free loans of up to $15,000, which can be used to finance a battery.
Virtual Power Plant (VPP) participation
On top of that, many retailers in NSW, SA, and VIC offer bonus credits or sign-up payments (around $250–$400) if you agree to let your battery join a VPP, essentially helping the grid by feeding in power when it’s most needed.
If you combine the new federal rebate with your state’s incentives and take advantage of VPP programs, the cost of a 10kW battery can drop from $12,000+ down to as low as $7,000–$9,000. For many Aussie households, that makes solar storage not just more affordable, but a lot more appealing.
How Long Is the Payback Period for a 10kW Solar Battery?
When it comes to battery storage, one of the most common questions is: How long will it take to pay itself off?
In simple terms, payback refers to how many years it takes for your electricity bill savings (and any additional earnings from Virtual Power Plants, or VPPs) to equal what you spent on the battery.
For a 10kW solar battery, the answer depends on a mix of factors: where you live, how much energy you use at night, and what rebates or incentives you can claim.
Typical payback ranges around Australia
With the new federal rebate and average 2025 electricity rates, here’s what payback might look like for an average household using around 7kWh each evening:
Perth: Around 7.5 years, or as low as 3 years if you qualify for WA’s new battery rebate.
Adelaide: Just over 6 years, thanks to high electricity rates.
Brisbane and Sydney: Typically 7 to 8 years, and potentially less if you join a well-paying VPP.
Canberra and Melbourne: Around 12 to 14 years, where grid power is cheaper and savings take longer to add up.
If your household uses more than 10kWh after sunset, your battery is likely to cycle more fully and frequently—shortening your payback by one or two years.
Is a 10kW Solar Battery Right for You?
So, should you go for a 10kW battery? It depends on your energy habits, home setup, and goals. Let’s break it down.
A 10kW battery might make sense if:
You use a lot of energy in the evening. If your household runs electric hot water, ducted heating or cooling, or charges an EV overnight, you’re probably using between 7–12kWh after dark. A 10kWh battery can cover most or all of that.
You’re on time-of-use rates. If your electricity provider charges more during peak hours (say, 45–65c per kWh), storing solar to use later can save you a lot more than selling it back to the grid.
You want backup during blackouts. A battery of this size can keep your essentials—fridge, lights, modem—running through most outages.
You qualify for multiple incentives. If you can combine the federal rebate, a state subsidy, and a VPP bonus, you could bring the total cost down to $7,000–$9,000. That makes payback faster and the decision easier.
On the other hand, it might not be the best fit if:
You don’t use much power at night. If your evening usage is low, you might be better off exporting your solar during the day and sticking with a smaller battery.
You live where electricity is cheap. Places like Hobart or Canberra may have longer payback periods, sometimes stretching beyond a typical 10-year warranty.
You’re tight on cash. Even with rebates, a battery can still add $8,000–$10,000 to your upfront solar costs. And if you’re financing it, interest can extend your break-even point further.
Smarter Choice: Solar Battery with Flexible Capacity
Still not sure? It's better to choose a product that can scale with your needs. The EcoFlow DELTA Pro 3 portable power station is a perfect example: it can be configured to an ideal 4kWh capacity, and can also be easily expanded to a higher specification of 12kWh. With EcoFlow's unique X-Fusion technology, it can maintain a continuous output power of 4000W, which is sufficient to drive multiple high-power appliances simultaneously, making it an ideal choice for backup power, energy-saving solutions, or daily power use.
This portable power station also excels in charging speed: a high 4000W AC mains input can charge the battery from 0 to 80% in 50 minutes; if combined with mains power, vehicle charging, and up to 2600W solar charging, it can achieve a blistering 7000W multi-source fast charging. When paired with solar panels, it becomes a truly portable solar power system that can significantly reduce daily grid power consumption.
EcoFlow DELTA Pro 3 Portable Power Station
Conclusion
At the end of the day, a 10kWh solar battery could be a great move, especially if you’re using a fair amount of electricity and want to take control of your power bills. While the 10kW solar battery price might seem like a big upfront cost, incentives and long-term savings can make it a worthwhile investment. The key is knowing what you need and what’s available to you. Take your time, weigh up the numbers, and you’ll be in a good spot to make a call that suits your home—and your wallet.
FAQs
How much does a 10kW solar battery cost?
In Australia, a 10kWh solar battery typically costs between $11,000 and $14,000, including installation. Prices vary based on brand, features, and installation complexity. Government rebates—such as the federal Cheaper Home Batteries Program launching in July 2025—can reduce costs by up to 30%, potentially bringing the price down to around $9,000 or less for eligible households.
Is a 5kW or 10kW solar battery better?
It depends on your household’s energy usage, budget, and goals. A 5kWh battery is suitable for smaller homes with moderate energy consumption, typically costing between $7,000 and $9,000. In contrast, a 10kWh battery, priced around $11,000 to $14,000, is ideal for larger households or those with higher energy demands. While the 10kWh option has a higher upfront cost, it can lead to increased savings over time by reducing reliance on the grid and maximizing the use of solar energy.
How long will a 10kW battery power a house?
A 10kWh battery can power essential household appliances for approximately 10 to 12 hours during a blackout, assuming an average consumption of 750 to 1,000 watts per hour. The actual duration depends on which appliances are used and their energy consumption. For example, running only lights and a refrigerator will extend the battery’s duration compared to using high-energy appliances like air conditioners or ovens.