Recognised by SunWiz Australia’s Top 5
If your home runs multiple air conditioners, charges an electric vehicle, or uses a lot of electricity every day, a standard battery may no longer be enough. A 28kWh solar battery provides the extra storage needed to power larger homes more efficiently.
At Zip Solar, every 28kWh battery package is tailored to your energy usage, solar system, and future needs, so you get reliable performance and long-term value.
Designed for high-demand households
Professionally installed by SAA-certified installers
Compatible with larger solar systems
Smart monitoring and ongoing local support
A 28kWh solar battery isn't designed for every household. It's intended for homeowners whose daily electricity use has grown beyond what a standard residential battery can comfortably support.
This battery may be the right choice if you have:
A large family home with consistently high electricity usage.
Multiple air conditioners or ducted heating and cooling.
High-energy appliances such as pool pumps, workshops or home offices.
An electric vehicle that is regularly charged at home.
Plans to increase your electricity usage in the future.
Rather than simply choosing the largest battery available, it's important to install a system that matches both your energy consumption and solar generation.
Not sure if a 28kWh battery is right for your home? Read our complete 28kWh Solar Battery Guide.
Solar System
$4999*/-
$5499*/-
22 × 475W
Tier 1 Solar Panels
1 X 8kW
Power Inverter
Solar System
$6499*/-
$6999*/-
28 × 475W
Tier 1 Solar Panels
1 X 10kW
Power Inverter
Solar Panels + Solar Battery
$7499*/-
$7999*/-
14 X 475W
Tier 1 Solar Panels
1 X 10kWh
Solar Battery
Solar Panels + Solar Battery
$8899*/-
$9399*/-
22 X 475W
Tier 1 Solar Panels
1 X 10kWh
Solar Battery
Solar Panels + Solar Battery
$9999*/-
$10499*/-
28 X 475W
Tier 1 Solar Panels
1 X 10kWh
Solar Battery
Disclaimer: Battery pricing includes the proposed Federal Battery Rebate, active from 1 July 2025. Rebates are subject to change, eligibility, and government implementation. Should rebates be altered, withdrawn, or unavailable, pricing will be adjusted accordingly. If rebates cannot be claimed, Zip Solar will refund the deposit. Offer applies to single-storey, single-phase homes in standard metro areas only. Eligibility for the Small-scale Renewable Energy Scheme (SRES) and assignment of STCs to Zip Solar is required. Full terms and conditions available at zipsolar.com.au. The Price varies based on Brand Selection and your location. However, with Government Rebates applied, most homeowners pay far less than expected. Estimated payback periods of 3–5 years are indicative only. Actual outcomes may vary depending on household energy usage, battery size, electricity tariffs, feed-in tariffs, and future energy price changes. Individual results are not guaranteed. For VIC - The price shown is the out-of-pocket cost after applying the Victoria Government Solar Rebate and the interest-free loan.
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If your current battery or solar setup struggles to meet your evening electricity needs, upgrading to a larger battery may be worth considering.
Common signs include:
Your battery regularly runs flat before bedtime.
You still buy significant electricity from the grid every evening.
Your household electricity usage has increased over time.
You're planning to install an EV charger or additional high-powered appliances.
Your existing battery no longer keeps up with your lifestyle.
The best way to confirm the right battery size is through a professional assessment of your home's electricity usage and existing solar system.
Every installation is designed to deliver a complete battery solution, not just the equipment itself.
A premium 28kWh battery system backed by manufacturer warranties.
Professional installation by experienced, SAA-certified installers.
Smart energy monitoring through an easy-to-use mobile app.
Assistance with eligible Cheaper Home Batteries Program documentation.
Ongoing after-sales support from the Zip Solar team.
Before installation, we assess your existing solar system and electricity usage to ensure the battery is correctly sized for your home.
A 28kWh solar battery performs best when paired with a solar system that produces enough surplus energy during the day.
A 10kW solar system is often a suitable choice for larger households with above-average electricity usage, providing enough excess solar energy to effectively charge a 28kWh battery on good solar days.
Learn more about our 10kW Solar SystemsHomes with very high electricity demand often benefit from a 13kW solar system, which can generate additional surplus energy to support larger battery storage while powering energy-intensive households.
Explore our 13kW Solar SystemsChoosing the right combination of solar panels and battery storage is just as important as choosing the battery itself. Our team assesses your solar generation, household usage, and future energy plans to recommend a system that delivers the best long-term value.
Energy needs rarely stay the same.
Many homeowners who install a battery today are also planning for tomorrow — whether that's purchasing an electric vehicle, expanding the family, or adding new electrical appliances.
A 28kWh solar battery provides additional storage capacity to help meet changing energy demands without immediately requiring another upgrade. It may be a practical option if you're planning to:
It may be a practical option if you're planning to:
Charge an electric vehicle at home, alongside your normal household electricity use.
Accommodate a growing household, where electricity demand naturally increases over time.
Add new appliances or home improvements, such as additional air conditioning, a pool, or a larger home office.
Choosing a larger battery today may reduce the need for another battery upgrade as your electricity needs continue to grow.
While every property's energy requirements are different, choosing a battery with enough capacity for your future plans can help make your solar investment go further.
Still deciding between a 14kWh, 28kWh, or even a larger battery? The comparison below can help you identify which option best matches your home.
Choosing the right battery isn't about installing the largest system. It's about selecting the capacity that best suits your household's energy needs.
14kWh Battery
Best For: Medium households
Typical Household: Standard family home
Solar Pairing: 6.6kW–10kW
Future Expansion: Moderate
Federal Incentive: Highest support
28kWh Battery
Best For: High-demand homes
Typical Household: Large family home
Solar Pairing: 10kW–13kW+
Future Expansion: Strong
Federal Incentive: Blended support
42kWh Battery
Best For: Very high energy users
Typical Household:Premium homes, multi-generational living or extensive
energy use
Solar Pairing: Large solar arrays
Future Expansion: Maximum flexibility
Federal Incentive: Blended support
Eligible 28kWh solar battery systems can receive support through the Australian Government's Cheaper Home Batteries Program. For larger batteries, the available incentive is applied across different battery capacity tiers.
Rather than focusing on the largest battery possible, today's incentive structure rewards homeowners who choose a battery that matches their actual energy requirements. Our team will explain how the current incentive applies to your installation and assist with the required documentation, making the process straightforward from start to finish.
Learn more in our Federal Battery Incentive Guide.
Installing a larger battery requires more than simply connecting new equipment. At Zip Solar, every project begins with a detailed assessment to ensure your system performs safely and efficiently.
Step 1 – Home Energy Assessment
We review your electricity usage, existing solar system, inverter compatibility, and electrical setup to determine whether a 28kWh battery is the right fit.
Step 2 – Tailored System Design
Our team designs a battery solution that matches your household's energy profile and future plans, ensuring the battery works efficiently alongside your solar system.
Step 3 – Expert Installation
Your system is professionally installed, tested, commissioned, and connected to smart monitoring so you can easily track your energy production and battery performance.
For larger battery installations, additional electrical assessments may sometimes be required, particularly for homes with more complex electrical systems. We'll explain everything before work begins, so there are no surprises.
We get it - solar batteries are a big investment. And with so much confusing information out there, it’s hard to know who to trust, what you actually need, or if it’s even worth it.
That’s exactly why we created this Solar Battery Guide - just for you, to give you clear answers, real savings insights, and the confidence to make the right choice — without any sales pressure.
How solar batteries work and why they matter?.
The real benefits of adding a battery to your system
Which battery types and brands are best for Australian homes
How much batteries cost and what incentives are available?
How to pick the right battery for your needs?
Zip Solar installs 28kWh solar battery systems across major Australian cities, helping homeowners upgrade their solar storage with confidence.
QLD 4184
VIC 3106
NSW 2567
NSW 2762
NSW 2765
NSW 2154
WA 6100
NSW 2261
QLD 4006
NSW 2137
QLD 4214
QLD 4560
QLD 4560
QLD 4214
NSW 2137
QLD 4006
NSW 2261
WA 6100
NSW 2154
NSW 2765
NSW 2762
NSW 2567
VIC 3106
QLD 4184
Recognised by SunWiz Australia’s Top 5
Product Review 2025 - 26 Winner
Officially Approved by NETCC
Excellent solar installation by Zip Solar – Zip Solar installed my 6.6kw Growatt system with JA Solar panels and Growatt ARK 10.2L battery system earlier this year.Thoroughly professional in work ethic, faultless installation, very supportive, and would highly recommend the team. Every communication has been dealt with promptly, with excellent support and feedback, with exceptional assistance.....
- Deborah
No. A 28kWh battery is generally designed for households with above-average electricity usage. During your consultation, we'll recommend the battery size that best matches your home's energy needs, even if it's a smaller system.
Yes. A larger battery can help support EV charging while meeting your household's daily electricity needs. The right solution depends on your driving habits, solar generation, and overall energy consumption.
In many cases, yes. We'll assess your existing solar panels, inverter, and available solar generation to determine whether upgrades are needed before installation.
Yes. If your system is eligible, we'll guide you through the available program requirements and assist with the necessary documentation to help make the process as simple as possible.
We don't recommend battery sizes based on trends. We recommend them based on your home's actual energy usage. Every installation is tailored to help you get the best long-term value from your solar investment.
EOFY Extended Offer Ends
31 July 2026 – Don’t Miss Out
