Battery Pricing and Sizes

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Home solar battery storage has made significant progress since its initial introduction. What was once a product primarily accessible to tech and eco enthusiasts with substantial financial resources is now increasingly appealing to regular homeowners who want to maximize their solar energy savings by using more of the power generated by their solar panels.

Due to the efforts of numerous innovators (including some with their sights on Mars), the cost of solar batteries in Australia has significantly decreased. While recent disruptions in the supply chain caused by COVID temporarily slowed this trend, the price of solar batteries has once again begun to drop as the world emerges from lockdowns.

This consistent decrease in the price of solar battery storage suggests that Australia can anticipate greater adoption in the upcoming years. Expect to see:

Quicker returns on investment
Increased competition in the market
More installers offering solar battery storage services

If you’re contemplating the purchase of a solar battery, price will likely be your primary consideration. Let’s examine what you can expect to pay based on the battery size.

What is the typical cost of a solar battery in Australia?

At present, Australians pay approximately $1,240 per kilowatt-hour (kWh) of storage for a solar panel battery.

For example, if you were considering a 6kWh solar battery, price estimates would place it at around $7,440, excluding installation costs.

If you’re interested in a different size, you can refer to our estimated solar battery cost table below.

Battery Size	Solar Battery Price*
4kWh solar battery price	$4,960
5kWh solar battery price	$6,200
6kWh solar battery price	$7,440
7kWh solar battery price	$8,680
8kWh solar battery price	$9,920
9kWh solar battery price	$11,160
10kWh solar battery price	$12,400

*Excluding installation cost

Many Australians opt for a 10kWh battery, or something similar, when aiming to optimize their solar systems. This battery size has become the top choice due to its ability to sustain household power needs for extended periods. The table below illustrates that 10kWh batteries are currently the most widely installed in Australia for this specific purpose

	Battery	Nominal Capacity
	LG Chem RESU 10	9.86 kWh
	Redback SB9600	9.6 kWh
	sonnenBatterie Hybrid 9.53/10	10.0 kWh
	Senec.HOME V3 Hybrid	10 kWh
	SunGrow SBR096	9.6 kWh
	Eguana Evolve 0513	13 kWh
	Tesla Powerwall 2	13.5 kWh

Do brand names influence the cost of solar batteries in Australia? Similar to how the Ferrari logo adds a premium to their products and Nike’s iconic swoosh raises the price of their items, the world of solar power operates in a similar fashion.

When you’re in the market for a solar panel battery, the brand is closely tied to the price you can expect. For instance, renowned products like the Tesla Powerwall 2 come with a higher initial cost. However, this doesn’t mean that a Tesla Powerwall 2 isn’t a worthwhile investment. These batteries are at the forefront of technology, boast a sleek design, and are backed by excellent post-purchase support. They’ve earned their status as leading products in the industry.

If your primary concern is utility, there are still numerous budget-friendly options available that provide solid performance. Take SunGrow, for instance. This Chinese-based company has lower overhead costs, allowing them to offer competitive prices while maintaining high product quality.

That said, for precise information on solar battery prices, it’s best to consult with an installer. You can receive three free quotes from experienced installers.

When considering solar battery prices in Australia, it’s important to note that it’s not a uniform market… The cost of solar batteries varies across different Australian states due to subsidies and incentives offered by some state governments. You can find more information for your specific state by following the provided links.

NSW
ACT
NT
SA
VIC
*WA, TAS, QLD currently do not provide battery-based incentives or subsidies.

Understanding how solar battery sizing (kW / kWh) functions in practice Solar batteries are characterized by both a kilowatt-hour (kWh) and kilowatt (kW) rating. Think of these as the maximum amount of energy (kWh) a battery can store and the maximum rate at which it can discharge that energy to power your home, respectively.

This concept can be confusing for many, so let’s examine it with an example.

If you had a solar battery rated at 5kW / 10kWh, you could infer the following:

The maximum power it can release at any given moment is 5kW.
With a fully charged battery, you could draw 5kW for 2 hours before depleting the battery.
10kWh / 5kW = 2 hours of full usage.

It’s crucial to note that you can never draw power from your battery at a rate exceeding its kW rating; that’s the maximum discharge rate it can handle.

Be cautious; if you operate multiple appliances that exceed your battery’s kW rating, you’ll begin drawing any excess power from the grid.

Have more questions on solar panel battery price? Read our FAQs

WILL A 5KWH VS 5KW SOLAR BATTERY PRICE BE DIFFERENT?

Yes. As discussed above, 5kW and 5kWh are actually different measurements altogether. Your solar battery’s energy storage capacity is measured in kWh (kilowatt-hour) while its power is measured in kW (kilowatts).

The difference?

Its power (kW) is the rate at which it can charge or discharge
Its storage capacity is the amount of energy it can hold

In both cases bigger isn’t always better. There’s no point paying for a higher power system (kW) if it’s more than your home and appliances can draw. Equally, there’s no point forking out for additional capacity (kWh) that you aren’t going to use.

Therefore a 5kW and 5kWh battery will likely not be the same price, you’re comparing apples and oranges.

The question you should be asking is, ‘What’s the difference between 5kW and 6kW solar battery price?’

And remember, you need both kW and kWh specifications to get an accurate quote on a battery.

IS THE SOLAR BATTERY PRICE IN AUSTRALIA GOING DOWN?

Yep! As demand for affordable home batteries continues to grow across Australia and the world, competition is only going to get more fierce — which is great for us consumers.

The last 10 years saw staggering mass adoption of rooftop solar across Australia as technology advanced, the market matured and prices tumbled.

Expect the same thing to happen to batteries over the next 5 years.

CAN I ADD A SOLAR BATTERY TO MY EXISTING SOLAR SYSTEM?

Yes – but you may need to change your inverter. Hybrid inverters allow you to add batteries to your existing systems by connecting them to the grid. Alternatively you may need to add a battery inverter instead. Get 3 quotes from qualified installers to assess your situation.