Fox ESS Hybrid and CQ7 Battery Installation in Caloundra, Nambour and the Sunshine Coast
Fox ESS is the brand on more Nuvolt installs than any other, and for good reason: the 9.99kW hybrid inverter and stackable CQ7 battery are proven, well supported and sharply priced for what they deliver. Paired with a 13.3kW array of 475W Trina Vertex S+ panels, this is our benchmark whole home solar and battery package, designed, installed and commissioned by the licensed contractor who has put in hundreds of them. We install from our Nambour workshop across the Sunshine Coast and Brisbane.
Free estimate within 1 business day of receiving your photos and power bill. We can't estimate without photos, and we don't visit to estimate. Want the price locked in? Book a $299 design visit, credited back if you go ahead within 30 days of the visit.

Designed, installed and commissioned by the licensed contractor.
What's included
Everything in the Fox ESS package.
- 13.3kW solar array: 28 × Trina Vertex S+ 475W N type i-TOPCon dual glass panels
- Fox ESS 9.99kW hybrid inverter, the workhorse of our residential installs
- Fox ESS CQ7 stackable LFP battery: 6.96kWh usable modules sized to your usage and expandable later
- Blackout backup support with a compatible backup configuration
- Fox ESS app monitoring for solar, battery and household loads
- 10 year manufacturer warranty on the battery modules
- 25 year product warranty, 30 year performance warranty on the panels
- Full professional installation, testing & commissioning by the licensed contractor
- Energex / DNSP connection application lodged for you
- STC & battery rebate paperwork handled end to end
- Lifetime workmanship warranty (conditions apply)
Conditions & what may be extra
- Final system size, battery capacity and inverter model are confirmed from clear photos of your site, or at a design visit if one is needed
- Quoted after eligible STC and battery rebates; eligibility and the final rebate value depend on your system, zone and situation
- Switchboard or RCBO upgrades are extra if required
- Nonstandard roofs, tilt frames, difficult access or additional cabling are extra
- DNSP / export limitation works are extra if required (13.3kW arrays are subject to network approval and may be export limited)
- Backup configuration depends on switchboard condition, circuits and load assessment

QLD Electrical Contractor Lic# 92489SAA Accreditation #S60932145.0 Google ratingLifetime workmanship warranty (conditions apply)Is this the right size for your home?
Put your own daily usage in and see how much of it a system like this covers, hour by hour. In kilowatt hours, not sales talk.
Read what we think of it after installing it
Fox ESS CQ7 battery review, from the people who install it
What a CQ7 module actually holds, what the stack is like to fit, where it suits a Queensland home and where it does not, and the warranty registration step most owners never hear about.
Read the review →Sizing guideWhat size home battery you actually need
How to size the Fox ESS battery around your real evening use, and why the federal discount stops rewarding size past a point.
Read the guide →Fox ESS Package Questions
Straight answers on the hardware, the battery sizing, backup and the rebates, from the licensed contractor doing the work.
Why is Fox ESS the brand you install most?
Because it keeps earning its place. The hardware is reliable, the stackable CQ7 battery makes right sizing easy, support is responsive, and the value for money lets more households afford a battery that actually covers their evenings. We install what we would put on our own homes, and for most customers that conversation starts with Fox ESS.
How big can the CQ7 battery go?
The CQ7 stacks 6.96kWh modules, all of it usable, so a typical home lands anywhere from around 14kWh to 28kWh, and larger stacks are available for big consumers. Because it is modular, you can also start smaller and add modules later. We size it to your actual usage, from your bill and clear photos or at a design visit if one is needed, rather than defaulting to the biggest stack a rebate allows.
Does it handle blackouts?
Yes, with a compatible backup configuration the Fox ESS hybrid keeps nominated circuits running when the grid drops. Whether that is essential circuits or something closer to whole home depends on your switchboard, loads and the backup wiring, which we assess and quote per site so the backup behaves the way you expect.
I already have a Fox ESS system someone else installed. Can you fix or service it?
Yes. Fault finding, repairs and putting a poor install right on Fox ESS systems we did not fit is regular work for us, including where the original installer has closed down or stopped answering. See our Fox ESS repairs and service page.
I already have solar. Can I just add the Fox ESS battery?
Often, yes. Retrofitting a CQ7 battery and hybrid inverter to an existing compliant solar system is one of our most common jobs, and it has its own dedicated package. See our battery retrofit offer, or book a design visit and we will confirm what your existing system can take.
Why pair it with 13.3kW of solar?
A 13.3kW array of 28 x 475W Trina Vertex S+ panels on the 9.99kW hybrid is the classic maximum value configuration: it fills the battery earlier in the day, generates meaningfully more in winter and on cloudy days, and stays within standard oversizing rules. Network approval and export limits are confirmed as part of your quote.
Is it rebate eligible?
Yes. Fox ESS inverters and batteries are CEC approved and our installs are signed off by our SAA accredited installer, so eligible solar STCs and the federal battery rebate are applied up front in your written quote.
What warranties come with it?
Fox ESS covers the CQ7 battery modules with a 10 year warranty and the hybrid inverter with its standard manufacturer warranty, the Trina Vertex S+ panels carry a 25 year product and 30 year performance warranty, and our installation work is covered by our lifetime workmanship warranty (conditions apply, see our Terms). If you sell the home, that workmanship warranty can transfer once to the new owner for 10 years from completion, provided they let us know in writing within 60 days of settlement.
Compare our packages. Not sure which suits your home? We'll recommend the right fit in your free estimate, or on site at a $299 design visit if one is needed.
Get a Free Estimate for Your Fox ESS System
Tell us about your home, your power use and what you want from backup. We'll design the right Fox ESS system for your roof and switchboard, apply every rebate you're eligible for, and give you a written estimate, confirmed before anything is ordered.
- →SAA accredited, licensed & insured, direct from the contractor
- →STC & battery rebate paperwork handled for you
- →Sunshine Coast & greater QLD, hundreds of installs
Send your enquiry
Takes 30 seconds. We reply within 2 hours during business hours. If it is urgent, call 0494 826 740.
Where we do this
Fox ESS solar and battery packages are installed across the Sunshine Coast and greater QLD, from our two bases in Caloundra and Nambour.