SOLAR BATTERY STORAGE SYSTEM
80KWh
Large homes & mid-Size businesses,
$27,699*
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80kWh Solar Battery
An 80kWh solar battery is a large-capacity energy storage system designed for high electricity use. It stores excess solar power during the day and makes that power available later, especially at night, during peak tariff periods, or during outages when the system is designed for backup.
For many Australian homes, an 80kWh battery is larger than a standard household battery. It is more suitable for large homes, farms, commercial sites, workshops, offices, hospitality businesses, and properties with high daytime and night-time energy demand. It can also support electric vehicle charging, heavy appliances, air conditioning, refrigeration, and other power-hungry loads.
20kWh/day
Around 4 days
of energy use
40kWh/day
Around 2 days
of energy use
80kWh/day
Around 1 full day
of energy use
DISCOVER THE BEST SOLAR BATTERY FOR YOUR SOLAR SYSTEM
60KWh
Solar Battery
Large Homes & Small Business
$
20,199
*
Small Home
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
70KWh
Solar Battery
Large homes & mid-size business
$
23,399
*
Medium Home
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
80KWh
Solar Battery
Large homes & mid-size business
$
27,699
*
Big Family Home
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
What Is an 80kWh Solar Battery?
An 80kWh solar battery is a type of battery storage unit that can hold up to 80 kilowatt hours (kWh) of solar power. Basically, if you use 1kWh, then you use 1 kilowatt of power for 1 hour. Therefore, an 80kWh battery will provide:
 Actual runtime depends on usable battery capacity, inverter size, battery efficiency, depth of discharge, and the appliances connected to the system. The Clean Energy Regulator explains that nominal capacity is the maximum amount a battery can store, while usable capacity is the amount that can actually be discharged for use
How Much Power Can an 80kWh Solar Battery Store?
An 80kWh battery can store 80 units of electricity, because electricity bills commonly measure consumption in kilowatt-hours.
For example:
- If your property uses 20kWh per day, 80kWh could cover around 4 days of energy use.
- If your property uses 40kWh per day, 80kWh could cover around 2 days.
- If your property uses 80kWh per day, the battery could roughly cover 1 full day.
These are simple estimates. Real performance depends on how much of the battery is usable, how much solar is produced each day, and how much power is being used at one time.
How Does an 80kWh Solar Battery Work?
The working principle of an 80kWh solar battery is that it stores electric power that is produced by solar panels. In the daytime, the solar panels provide electricity to the building. The excess solar power can then be used to charge the battery, rather than feeding it into the grid.
When solar generation drops in the evening, overnight, during cloudy weather, or during high-demand periods, the stored battery energy can be used to power the property. Solar Victoria explains that a battery stores electrical energy from rooftop solar or, in some cases, from the grid, and then supplies that energy later for appliances and electrical systems.
A typical system includes:
80KWh Solar Battery Price in Australia (2026)
For homeowners considering a large‑capacity solar battery system, an 80 kWh solar battery offers substantial energy storage capability, ideal for maximising self‑consumption, increasing backup power during outages, and reducing reliance on grid electricity. In the Australian market, the price for an 80 kWh battery system generally starts around $27,699 AUD, though the final cost can vary depending on the specific brand and configuration.
 On top of the battery unit itself, installation costs typically range from $2,000 to $5,000 AUD, depending on factors such as site complexity, electrical upgrades, and whether a compatible inverter is already installed. Buyers should also consider potential federal or state rebates that can lower the upfront cost, as well as long‑term warranty coverage and performance when comparing options.
Get a free quote from Aussie Solar Tech to find the right 80kWh battery system for large homes and businesses.
80kWh Solar Battery Warranty and Lifespan
A 80kWh battery storage system is a long-term investment, so it is important to understand its warranty and lifespan before installation. Most batteries come with a manufacturer warranty of around 10 years, depending on the brand, battery type, charge cycles, and capacity retention.
The lifespan depends on factors such as charging frequency, depth of discharge, temperature, installation quality, and maintenance. With proper system design and battery management, an 80kWh battery can provide reliable backup power for many years and help reduce grid dependency.
How Much Can 80kWh Battery Storage Reduce Grid Dependence?
80kWh solar battery systems can reduce grid dependence when paired with a suitable solar panel system and matched to the property’s energy use.
It reduces grid dependence by:
- Storing excess solar energy
- Supplying power after sunset
- Reducing peak-time grid imports
- Supporting backup loads during outages
- Allowing better control over grid electricity usage
However, installing a large battery does not automatically make a property fully off-grid. A true off-grid system requires careful planning, including enough solar generation, backup support, and energy management. For most Australian homes and businesses, the more practical goal is reducing grid reliance, lowering electricity bills, improving backup protection, and making better use of solar energy.
Who Needs an 80kWh Solar Battery in Australia?
An 80kWh solar battery is best suited for users with high electricity consumption. It may be suitable for:
- Large homes with high energy use
- Homes with electric vehicles
- Properties with pool pumps
- Properties with ducted air conditioning
- Properties with electric heating
- Small and medium businesses
- Farms and rural properties
- Workshops and warehouses
- Medical clinics and offices
- Retail shops
- Restaurants and cafés
- Sites with refrigeration or cold storage
- Properties aiming to reduce grid dependence
For a small household with low electricity use, an 80kWh battery may be too large. The right battery size should be based on daily energy consumption, solar generation, electricity tariff, backup needs, and future load growth.
Why Choose a 80kWh Battery Storage for High Energy Use?
Solar batteries with a capacity of 80kWh are excellent choices for those who consume a lot of energy since they can store larger amounts of solar power. This is particularly beneficial when the sun is shining in the day but the energy need is still being put into the grid late at night or in the evening.
For example, a business may generate strong solar power during the day but still need energy after sunset. A large battery can shift that stored solar power into later hours. A large home may also benefit if it has EV charging, air conditioning, pool equipment, and high evening demand.
Frequently Asked Questions
How Long Will an 80kWh Battery Last?
An 80kWh battery can usually last around 2–4 days, depending on how much electricity you use each day. For example, if your property uses around 20kWh per day, the battery may last about 4 days. If you use heavy appliances like air conditioners, heaters, ovens, or EV chargers, the backup time will be shorter.
Which Brands Offer 80kWh or Scalable Storage?
Several brands offer scalable battery storage systems that can be expanded to reach higher capacities. Popular options include Sungrow, BYD, Tesla Powerwall, Alpha ESS, Fox ESS, and Sigenergy. These brands offer modular battery systems, meaning extra battery units can be added based on your energy needs.
How Big Is an 80kW Solar System?
An 80kW solar system is considered a large solar system and is commonly used for commercial buildings, farms, schools, warehouses, and large properties. Depending on the wattage of the solar panels, it may need around 160–190 solar panels. The system also requires a large roof or ground space with good sunlight exposure.
Is 80kWh Battery Storage the Same as an 80kW Solar System?
No, they are not the same. 80kWh refers to how much energy a battery can store, while 80kW refers to the size or power output of a solar system. In simple terms, the battery stores electricity, and the solar system generates electricity.
What size inverter is needed for an 80kWh battery?
The inverter size depends on your power demand, not only the battery size. For an 80kWh battery, a common inverter size may be around 20kW to 50kW, depending on the appliances or equipment you want to run.
For homes, a smaller inverter may be enough. For businesses, farms, or commercial use, a larger inverter is usually needed. A solar installer should check the load before selecting the inverter.
Can a 80kWh battery be used in on-grid systems?
Yes, an 80kWh battery can be used in an on-grid system. It stores extra solar energy during the day and allows you to use it at night or during peak hours.
However, for backup during power cuts, the system needs a hybrid inverter and backup setup. Without this, the battery may not work during a blackout.
WE INSTALL CEC APPROVED POPULAR SOLAR BATTERIES IN AUSTRALIA
- Tesla Powerwall
Great for storing solar energy at home because it is very efficient and lasts a long time.
- Sungrow BatteryÂ
Works well and is affordable. It can be used in homes and businesses.
- Sigenergy Battery
A dependable storage option that focuses on being eco-friendly and simple to use.
- SolarEdge BatteryÂ
Works best with SolarEdge inverters and gives you excellent monitoring and control.
- Growatt BatteryÂ
A small, affordable option that works well.
- GoodWe BatteryÂ
A solar storage battery that is reliable, long-lasting, and very efficient.
