SOLAR BATTERY STORAGE SYSTEM
28KWh
High-Usage Small & Medium Homes
$7,499*
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28kWh Solar Battery
A 28KWh Solar Battery is a high-capacity home battery storage option for Australian households that use more electricity than an average home. It stores excess solar energy during the day and allows you to use that power later at night, during peak electricity rates, or when solar production is low.
For high-usage small and medium homes, a 28kWh battery can be a practical choice if the property has strong solar generation, high evening demand, air conditioning, pool pumps, or future EV charging plans. However, it is not the right size for every home. The best result depends on your solar system size, daily usage, inverter capacity, backup needs, and rebate eligibility.
Estimated Backup from a 28kWh Battery
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DISCOVER THE BEST SOLAR BATTERY FOR YOUR SOLAR SYSTEM
28KWh
Solar Battery
High-usage small & medium homes
$
7,499
*
Small Home
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
30KWh
Solar Battery
High-usage small & medium homes
$
7,999
*
Medium Home
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
32KWh
Solar Battery
Medium homes & small business
$
8,599
*
Large Home
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
What Is a 28KWh Solar Battery?
A 28kWh solar battery is a type of energy storage device that can store approximately 28 kilowatt-hours (kWh) of solar energy. Put simply, it’s like a savings account for solar energy. During the day, your solar panels generate electricity. Some of that power is used right away in your home. Any surplus solar power generated could be used to charge the battery rather than feed into the grid. Later, the electricity stored can be utilized at night time, when the sun is not shining or when electricity costs are high.
Here, kWh means storage capacity. It shows how much electricity the battery can store. This is different from kW, which means how much power the battery or inverter can deliver at one time.
How Much Energy Can a 28KWh Battery Store?
A 28kWh battery can store about 28 units of electricity. For a home with higher energy use, this can cover a strong portion of evening and overnight demand, depending on appliance load and battery settings.
A 28kWh battery may help run:
- fridge and freezer
- lights
- Wi-Fi and home office devices
- television and small appliances
- washing machine
- dishwasher
- pool pump
- selected air conditioning use
- some EV charging support
The actual runtime depends on usable battery capacity, inverter output, appliance load, and whether the system is designed for essential-load backup or whole-home backup.
How Long Can a 28KWh Battery Power a House?
Why 28KWh Solar Batteries Suit High-Usage Homes
A 28kWh solar battery suits homes that use more power than average, especially after sunset. It is not only about house size; energy behaviour matters more.
This battery size may suit:
- medium homes with high electricity use
- small homes with heavy appliances
- homes with strong night-time energy demand
- properties with pool pumps
- homes with air conditioning
- households planning EV charging
- properties exporting excess solar during the day
- homes wanting stronger energy independence
The main purpose is to store more daytime solar energy and use it later when the home needs power most.
How much does a 28 KWh solar battery cost in Australia?
28kWh solar battery price starts from $7,499 AUD, making it a strong option for homes with higher evening energy use and greater solar storage needs. This battery size is ideal for households using air conditioning, pool pumps, regular appliances, or planning future EV charging. Final pricing may vary depending on installation requirements, system setup, backup options, and property conditions
For the best price and expert advice, get in touch with us at Aussie Solar Tech. We’ll help you choose the right solar battery and provide a quote based on your home’s actual energy needs.
Rebates and Government Incentives for Solar Batteries
Solar battery rebates can reduce the upfront cost of eligible battery systems in Australia. Under the Cheaper Home Batteries Program, eligible battery systems must generally be between 5kWh and 100kWh nominal capacity, and systems up to 100kWh are eligible for STCs only on the first 50kWh of new or added usable capacity.
The Clean Energy Regulator also states that STCs are calculated based on usable battery capacity, and only the first 50kWh of usable capacity is eligible for STCs.
Because rebate rules and prices can change, homeowners should request an updated quote before installation.
How a 28KWh Battery Works with Solar Panels
A 28kWh battery works with solar panels through a compatible inverter or hybrid inverter.
The process is simple:
- Solar panels generate electricity during the day.
- Your home uses solar power first.
- Extra solar energy charges the battery.
- Stored energy is used at night or during peak tariff periods.
- If the battery is empty, the home can draw electricity from the grid.
Some systems can also provide backup power during blackouts, but this depends on the battery model, inverter, switchboard setup, and backup circuit design.
What Size Solar System Do You Need for a 28KWh Battery?
A 28kWh battery needs enough solar generation to charge properly. If the solar system is too small, the battery may not fill regularly, especially in winter or on cloudy days.
The right solar system size depends on:
- daily electricity use
- roof space
- location
- solar export amount
- inverter capacity
- household energy pattern
- future EV charging plans
A large battery only works well when it matches the home’s solar production and electricity demand.
28KWh Battery vs 25KWh and 30KWh Battery Systems
A 28kWh battery sits between 25kWh and 30kWh battery systems. It offers more storage than a 25kWh battery but is slightly smaller than a 30kWh setup.
A 28kWh battery can be a balanced option for households that need strong storage but do not want to move into a larger battery category.
When a 28KWh Battery May Be Too Large
A 28kWh battery is not suitable for every household. In some cases, it may be oversized.
It may be too large if:
- your daily electricity use is low
- your solar system is small
- your battery cannot charge fully
- your night-time usage is limited
- you only need basic backup
- a smaller battery gives better payback
Why Choose Aussie Solar Tech for 28KWh Solar Battery Installation?
A 28kWh battery needs proper system design. The battery must match your solar panels, inverter, household demand, backup needs, and future electricity plans.
Aussie Solar Tech lists several 28kWh-class solar battery options, including  Sungrow,Sigenergy, GoodWe, Fox ESS, and Neovolt systems, with indicative pricing after rebate.
Choosing Aussie Solar Tech can help homeowners:
- compare suitable battery options
- understand cost and rebate eligibility
- match battery size with solar generation
- plan backup power correctly
- avoid oversizing
- install a system based on actual energy needs
For a battery of this size, correct sizing is essential for long-term performance and savings.
Frequently Asked Questions
What size solar system is needed for a 28 kWh battery?
A 28kWh battery is usually best paired with a 10kW to 15kW solar system, depending on your daily electricity usage, roof space, sunlight hours, and how much backup power you want. Homes with high evening use, air conditioning, pool pumps, or future EV charging may need a larger solar system to recharge the battery properly during the day. A professional solar assessment is recommended to choose the right system size for your home.
How long will a 25kWh battery last?
A 25kWh battery can last depending on your power use.
5kWh/day → around 5 days
10kWh/day → around 2.5 days
25kWh/day → around 1 full day
Actual backup time may vary depending on usable battery capacity, appliance use, inverter limits, battery reserve settings, and solar charging.
What is the range of a 30kWh battery?
A fully charged 30kWh battery can power an average Australian home for about 24 hours, depending on energy consumption and appliance usage.
What is the 30kW solar battery cost in Australia?
The 30 kwh battery price in Australia starts from around A$7,999.
Is a 28kWh battery good for EV charging?
It can help homes with EV charging, but EV charging needs careful planning. In many cases, charging directly from daytime solar is more efficient than using stored battery energy.
WE INSTALL CEC-APPROVED POPULAR SOLAR BATTERIES IN AUSTRALIA
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Great for storing solar energy at home because it is very efficient and lasts a long time.
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Works well and is affordable. It can be used in homes and businesses.
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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.
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BYD Battery
