Fox ESS
Premium storage at sensible money — the EVO all-in-one and the modular Cube range, designed and fitted across the North East by your Fox ESS-approved team.
All-in-one,
all sorted.
The Fox ESS EVO packs the inverter, battery and backup into one weatherproof (IP66) unit that hangs on the wall, inside or out. It's built for British weather too — internal battery warming for cold snaps and an internal fire-suppressant for peace of mind — and it's covered for a class-leading 12 years.
Start small.
Stack as you grow.
Prefer to build up over time? Fox's modular Cube batteries stack neatly — add modules for a bigger family, a heat pump or a second EV — up to around 43 kWh. Safe LFP cells, smart battery warming, and a tidy, cabinet-free finish that looks like an appliance, not a server rack.
Premium kit.
Sensible money.
Fox ESS has quietly become one of the most-fitted home batteries in the UK — modern all-in-one design and a 12-year warranty for a good deal less than the premium names. It's the brand we reach for when value and a fast payback matter most, without cutting corners on safety or support.
See every watt with
FoxCloud.
The FoxCloud app shows your solar, battery and home use in real time, and works hand-in-hand with smart tariffs like Octopus Flux and Agile — charging cheap and discharging at peak so the system pays you back without you thinking about it. We set the tariff up for you at handover.
Fox ESS at a glance
| Specification | Fox ESS |
|---|---|
| Flagship | EVO All-in-One — inverter + battery + backup in one unit |
| EVO capacity / power | 10.24 kWh · 5 / 8 / 10 kW inverter options |
| Modular range | ECS / EP / EQ Cube — stack up to ~43 kWh |
| Chemistry | LFP (lithium iron phosphate) + internal battery warming |
| Peak efficiency | ~97.6% |
| Backup | Essential-loads EPS; whole-home via EPS-BOX gateway |
| Ingress rating | IP66 (EVO) — indoor or outdoor |
| App | FoxCloud 2.0 — Octopus Flux & Agile compatible |
| Warranty | 12 years (EVO) · 10 yr / 6,000 cycles (Cube range) |
| Backing | Fox ESS — part of the Tsingshan Group (Fortune Global 500) |
- Fox ESS EVO All-in-One (or a modular system sized to your home)
- Design & install by our own NICEIC-certified engineers
- DNO application (G98/G99) handled for you
- Commissioning, certification & FoxCloud app set-up
- Warranty registration + our four-layer install cover
- Help choosing and switching to the right smart tariff
Indicative starting price — Fox is typically the best value of the brands we fit, and smaller modular systems start lower. Your free survey confirms a fixed written quote.
Approved to install.
Local to support.
AMP Renewables is a Fox ESS Approved Installer — trained to design, fit and support the EVO and Cube range. Your warranty is registered correctly, the system is commissioned the way Fox intends, and there's a local North East team on the end of the phone for the life of it. Smart, modern kit, fitted properly, by a 40-year family business.
Smart kit, fitted by the
steadiest hands in the North East.
It started in 1985 — founder Joe Sheridan wiring alarm systems out of the back of a van for family, friends and neighbours. Four decades on, the same family still answers the phone: son Lee runs the installs and grandson Nathan's on the tools — and AMP is a Fox ESS Approved Installer, trained to design, fit and support the EVO and Cube range.
Every install is delivered by our own time-served, NICEIC-certified electricians — never subcontracted. The same engineer who designs your Fox system is on the scaffold the day it goes in.
Fox ESS isn't the most famous name on a homeowner's lips — but it's one of the most-installed home batteries in the UK, uses safe LFP cells, carries a 12-year warranty and is backed by the Fortune-500 Tsingshan Group. One honest note: whole-home backup needs the EPS-BOX add-on (the standard EPS covers essential circuits), and we'll spec that properly if backup matters to you. We also fit Tesla, SolarEdge and Sigenergy, so we'll tell you straight which is the best fit.
Book your free Fox ESS survey
Free, no-obligation survey. Fixed-price written quote. Fitted by your local Fox ESS-approved team across the North East.
How much does a Fox ESS EVO cost installed?
The EVO is an all-in-one, so the from-price covers the unit, its built-in inverter and the backup electronics in a single box — which is why it is usually the cheapest way into home storage. The modular Cube range stacks higher if you need more. The figure below mirrors the from-price in our full battery cost table, and every quote is fixed in writing after a free survey.
- The EVO all-in-one — battery, inverter and backup electronics in one IP66 box
- Indoor or outdoor mounting, whichever suits the property
- All electrical work, and the EPS sub-board if you want critical circuits held up
- Your Northern Powergrid G98 or G99 notification, submitted for you
- FoxCloud commissioned on your phone with the charging schedule already set
A free survey turns this into a fixed written quote — see every battery we fit side by side on the home battery storage page.
Getting a Fox ESS EVO fitted, step by step
- 01
Free survey
We check your consumer unit, existing or planned solar, and whether the EVO is going indoors or out — it is IP66 rated, so either works.
- 02
Fixed written quote
One itemised price — the unit, all electrical work, the EPS sub-board if you want backup, and the DNO paperwork. Not an estimate.
- 03
DNO notification
We submit the G98 or G99 to Northern Powergrid for you. G98 is the fast track most EVO installs qualify for.
- 04
Install day
Usually a single day for a retrofit. Fitted by our own engineers — never subcontracted.
- 05
Commissioning and handover
FoxCloud set up on your phone, charging schedule matched to your time-of-use tariff, and a walk-through before we leave.
Fox ESS Approved Installer, across the North East
Fox ESS is the brand most North East homes actually start with, so it is the one we fit most — approved, and always with our own engineers. That means Tyne and Wear, County Durham, North Yorkshire (Teesside), Northumberland, Tees Valley — if you are outside it we will say so rather than waste your time.
Each town has its own battery page with local DNO and property detail — start at the battery hub or the areas we serve index.
Fox ESS EVO guides
Which home battery is best in 2026?
Why the value pick wins more often than people expect, and the point at which it stops being enough.
Read the guide →How long does a 6,000-cycle battery last?
What cycle counts and the 12-year EVO warranty really mean for the working life of the system.
Read the guide →Do you actually need a battery with solar?
The honest answer, including when adding storage to existing panels does not pay back.
Read the guide →Fox ESS FAQs
It's a single weatherproof unit that combines the solar inverter, the battery and the backup electronics — so instead of separate boxes you get one tidy install on the wall, inside or out. It comes with a class-leading 12-year warranty.
Yes — Fox's modular Cube batteries (ECS / EP / EQ) stack, so you can add capacity over time, up to around 43 kWh, as your needs grow with an EV or heat pump. We'll size the first install with room to expand.
The standard EPS keeps essential circuits going. For full whole-home backup, Fox uses an EPS-BOX gateway — we'll talk you through whether you need it and spec it properly on the survey, so there are no surprises.
Yes — Fox batteries use safe LFP chemistry with internal battery warming, so they keep working through cold snaps, and the EVO is IP66-rated for outdoor installation.
It's one of the most-installed home batteries in the UK and Europe, uses safe LFP cells, carries a 12-year EVO warranty, and is backed by the Fortune-500 Tsingshan Group. As an approved installer we register and support it properly, and we add our own four-layer cover on top.
Yes — AMP Renewables is a Fox ESS Approved Installer, trained to design, fit and support the range. You can also verify our wider accreditations (NICEIC D124458 and more) and read genuine reviews on Google, Checkatrade and Trustpilot.
From around £4,500 fully installed for a typical home, with 0% VAT until 31 March 2027 — Fox is usually the best value of the brands we fit, and smaller modular systems start lower. The free survey gives you a fixed written quote for your property.
Free quote
Get a free Fox ESS battery quote
Tell us about your property and current setup and we’ll size the system properly, then send a fixed-price written quote after a free survey. Covering the North East and all of the North East.
- NICEIC approved
- Gas Safe
- F-Gas certified
- Heat Geek-trained
- Est. 2017
- Own engineers — no subcontracting