Solar Battery Installation Sydney
Solar battery installation in Sydney, designed around your energy use.
We use your electricity bills and interval data to recommend a battery size that suits how your home actually uses energy. Whether you’re installing solar and a battery together or adding a battery to an existing solar system, our SAA-accredited team can design and install the right setup for your home.
Speak with our team. We respond within 24 hours on business days.
Balgowlah NSW
Solar system designed to support future battery storage and EV charging.
- SAA-accreditedDesign & installation
- In-house installersNot subcontracted crews
- Engineer-led designFrom your meter data
- Australian owned& operated
- Sydney metroService area
How we size a battery
Battery sizing starts with how much energy you use at night.
We’ll review your electricity bills and interval data to understand how much energy your home typically uses after the sun goes down. That helps us recommend a battery capacity that better matches your actual usage.
How solar and battery storage work across the day
Illustrative exampleevening use
01 · Daytime
Solar powers your home
Your panels generate electricity while the sun is out.
02 · Excess solar
Extra solar can charge the battery
Energy your home does not use straight away can be stored for later.
03 · After dark
Stored energy is used after sunset
Your night-time energy use helps us work out how much battery capacity may be suitable.
Battery storage we install
Three battery ranges. The right one depends on your home.
We install Tesla Powerwall 3, Sigenergy SigenStor and Sungrow SBH battery systems. The right option depends on your energy use, your existing solar setup and the amount of storage you need.
Tesla
Powerwall 3
13.5–54kWh
Capacity range0–54 kWh
Warranty10 years
Sigenergy
SigenStor
9–54kWh
Capacity range0–54 kWh
Warranty10 years
Sungrow
SBH
20–40kWh
Capacity range0–54 kWh
Warranty10 years
What we look at before recommending a battery
Your evening usage
We review how much electricity your home typically uses after the sun goes down.
Your existing solar system
If you already have solar, we check the condition and compatibility of the existing system before designing the battery setup.
The capacity you actually need
We use your usage data to recommend a battery size that suits your home.
The capacity ranges above show what each battery system is available in. Your recommended size depends on your actual energy use and, where relevant, your existing solar setup.
Talk to us about your battery optionsBattery for existing solar
Already have solar? You may be able to add a battery to your existing system.
If your solar was installed by another company, we can still assess it for a battery retrofit. We’ll start with a health check of the existing system, then design a separate AC-coupled battery setup where appropriate.
- 01Step
Check your existing solar system
We assess the condition and compatibility of your current solar system before recommending a battery setup.
- 02Step
Design the battery system
Where appropriate, we install a standalone AC-coupled battery that works alongside your existing solar system.
- 03Step
Keep the systems separate
The battery can charge from your existing solar while remaining a separate installation. This helps keep existing warranties and responsibility for each system clear.
Why we keep the battery system separate
Clear responsibility. Keeping the new battery installation separate makes it easier to identify which installer is responsible for each system.
Protecting existing warranties. A separate AC-coupled setup helps avoid unnecessary changes to the original solar installation and reduces the risk of affecting existing warranties.
Easier support if something goes wrong. With the two systems kept separate, it is clearer which part of the installation needs to be checked if an issue comes up later.
Why choose Guwing Green
Why Choose Guwing Green for Battery Installation?
From sizing and system design to installation and aftercare, our team takes care of the process from start to finish.
Battery sizing based on your usage
We review your electricity bills and interval data to recommend a battery capacity that suits how your home uses energy.
Engineers, Not Salespeople
Your system is designed by an SAA-accredited engineer who can answer questions about the recommendation.
Installed by our own SAA-accredited team
Your battery is installed by Guwing Green’s in-house SAA-accredited installers, not subcontracted crews.
Battery options chosen to suit your home
We recommend equipment based on your energy needs and system requirements, rather than pushing one particular brand.
Existing solar checked before we design
Adding a battery to an existing solar system? We assess its condition and compatibility before designing the retrofit.
Aftercare from the same team
Your point of contact stays the same after installation, with support for monitoring, warranty claims and future system expansions.
Work process
What happens after you enquire
We keep the process simple, with each step shaped around your existing system and energy use.
- 01Step
Tell us what you need
We’ll respond within 24 hours on business days to learn more about your home, your current solar setup and what you want from a battery.
- 02Step
We’ll review your energy use
We’ll look at your electricity bills and interval data to understand how much energy you typically use at night.
- 03Step
We will check your existing solar
If you already have solar, we assess the condition and compatibility of the existing system before designing the battery setup.
- 04Step
We’ll design and quote your system
We recommend a battery size and setup based on your energy use and the system already in place.
- 05Step
Your battery is installed
Installation is completed by Guwing Green’s in-house SAA-accredited team, not subcontracted crews.
Cost & warranty
How much does a solar battery installation cost?
Battery-only systems start at around $12,000. Larger solar-and-battery systems can reach $50,000 or more, depending on the system and project requirements.
- Battery-only systems · From around
- $12,000
- For battery installations without a new solar system.
- Solar + battery systems
- $50,000+
- For larger solar-and-battery systems.
- Warranty
- 10 years
- On the Tesla Powerwall 3, Sigenergy SigenStor and Sungrow SBH ranges featured above.
Our work
Solar systems designed for real homes
- 7.4 kW
Balgowlah
Multiple roof orientations made this a more complex design. The system was planned with future battery storage and EV charging in mind.
11.1 kWBilgola Beach
Custom mounts and a hand-made copper conduit were used, with equipment selected for the coastal environment.
7.4 kWAvalon Beach
A standing-seam roof required a specialised mounting design, with micro-inverters used to manage extensive shading.
Testimonials
Real Experiences, Lasting Impressions.
Rating 5.05 out of 5 stars,95+ Google reviews
“Paul from Guwing Green was great to deal with, had a professional approach and took the time to understand my requirements, explain all the components of the install and its capabilities, and do a thorough on-site visit to plan the installation, cable runs, inverter location etc.”
BrysonNSW, Australia
“Paul from Guwing Green is the ultimate professional. The team know their stuff and provided a custom design for my limited roof space. Paul was very honest, accommodating and transparent throughout the whole process.”
DomNSW, Australia
“Paul was responsive to my needs and questions throughout, provided a competitive quote with no surprise add on costs, understood our local conservation area solar placement restrictions, offered a timely installation and delivered with a smile.”
NinaNSW, Australia
FAQ
Solar Battery FAQs
Answers to common questions about solar battery installation, sizing, costs and adding a battery to an existing solar system.
Full FAQ libraryHow do I know what size solar battery I need?
We review your electricity bills and interval data to estimate how much energy your home normally uses at night. That evening load, along with your existing system and future plans, sets the capacity we recommend.
Can you add a battery to solar installed by another company?
Yes. If your solar was installed by another company, we can still assess it for a battery retrofit. We start with a health check of the existing system, then design a separate AC-coupled battery setup where appropriate.
Which solar batteries do you install?
We install Tesla Powerwall 3, Sigenergy SigenStor and Sungrow SBH battery systems. The right option depends on your energy use, your existing solar setup and the amount of storage you need.
How much does solar battery installation cost in Sydney?
Battery-only systems start at around $12,000. Larger solar-and-battery systems can reach $50,000 or more, depending on the system and project requirements.
What warranty comes with the battery?
The Tesla Powerwall 3, Sigenergy SigenStor and Sungrow SBH ranges we install come with a 10-year warranty. Your point of contact stays the same after installation, with support for warranty claims handled by our team.
Who installs the battery?
Your battery is installed by Guwing Green’s in-house SAA-accredited installers, not subcontracted crews.
Can Guwing Green help me join a VPP?
Yes. Our SAA-accredited engineers can walk you through which incentives apply at your address, and we recommend battery systems that are compatible with the VPP programs operating in your network area.
What happens after I enquire?
We respond within 24 hours on business days to learn about your home, your current solar setup and what you want from a battery. We then review your electricity bills and interval data, check your existing solar if you have it, and recommend a battery size and setup. Installation is completed by our in-house SAA-accredited team.
Find the Right Battery for Your Home
Tell us a little about your energy use and existing solar system. We’ll review your needs and recommend a battery setup that suits your home.
Sydney metro · We respond within 24 hours on business days.
Looking for new panels as well? Visit our home solar page to explore solar systems for your home.