Name: fox-ess.com
Telephone: 000000000
Rating: 1.6

Ross Goodfellow Guest

Generally speaking the Fox ESS system is brilliant EXCEPT FOR THE WIFI DONGLE which is woefully inad

Generally speaking the Fox ESS system is brilliant EXCEPT FOR THE WIFI DONGLE which is woefully inadequate and cuts off constantly, effectively making the entire system useless. Unless they upgrade this feature then I strongly recommend against buying Fox ESS.

Date of experience: Feb 09, 2026

Ross Goodfellow Guest

1 month ago

Fox ESS system dysfunctional Wifi

Generally speaking the Fox ESS system is brilliant EXCEPT FOR THE WIFI DONGLE which is woefully inadequate and cuts off constantly, effectively making the entire system useless. Unless they upgrade this feature then I strongly recommend against buying Fox ESS.

Date of experience: Feb 01, 2026

daniel jackson Guest

1 month ago

Used Fox ESS for a couple of systems…

Used Fox ESS for a couple of systems now. One was a large 98Kw system, & I needed assistance from their tech department. Had an engineer, Ben Humphries, visit my site, & I must say he was brilliant. Very knowledgeable & knew his stuff. Highly recommend Fox & especially Ben.

Date of experience: Jan 26, 2026

Mark Dadson Guest

1 month ago

Do not have FoxESS batteries or…

Do not have FoxESS batteries or inverters installed, they are an uncontrollable piece of crap. The app is useless and very complicated

Date of experience: Jan 20, 2026

Paul Zdanowski Guest

1 month ago

EP12 Problems

Had an EP12 battery installed mid December 2025. It has proved impossible to programme charge/discharge times despite the app saying that the settings are "successful " My installer has spoken to FOX on numerous occasions but still not working correctly. As its within the 30 day period I have rejected it and asked for a refund.

Date of experience: Jan 19, 2026

Martyn Woods Guest

2 months ago

I use grid power when my batteries are…

I use grid power when my batteries are 60% full. This is bullshit. I thought the batteries would be able to power a bungalow overnight at 60% obviouslyl not

Date of experience: Jan 02, 2026

Nikki Guest

3 months ago

Absolutely worst battery and worst…

Absolutely worst battery and worst company! DO NOT WASTE YOUR MONEY! They never answer there phones and you can’t get any support!

Date of experience: Nov 18, 2025

JL Guest

3 months ago

I've had my system for 3 years now

I've had my system for 3 years now, and not one single problem. I have had a recent upgrade to my Energy Cubes, and charging off peak via the app has saved me several hundred pounds per year. Win!

Date of experience: Nov 11, 2025

clive Hobbs Guest

4 months ago

Three months after install still not working.

Three months after install the Fox system still doesn’t work. Unable to charge or discharge batteries. Installer passed me to Fox who are trying to help with slow but continual email assistance. I have little faith and wish I hadn’t started this journey, very expensive install and I am not seeing any savings. I will continue to give them a chance but not feeling optimistic at this time. It will be interesting when I ask them to retrieve the install and ask for a refund!

Date of experience: Oct 29, 2025

Stephen Skipsey Guest

4 months ago

Had foxes system installed less than a…

Had foxes system installed less than a month ago. The WiFi dongle has disconnected from the WiFi & won't reconnect & my installer wants£120+vat to sort it out. Have just researched this issue & it's a common problem with these dongles & modern routers. Shouldn't the installer perform due diligence on this issue & make sure they're compatible?