Fox ESS Battery Storage Installed in Doncaster & South Yorkshire
Quick Answer
Fox ESS is the UK's biggest-selling home battery brand by 2025 shipments (per S&P Global's market tracker), with modular storage from around 4.7kWh to over 40kWh. A typical Fox ESS retrofit in Doncaster costs £3,500–£6,500 installed for 5–10kWh usable, or £5,500–£7,500 for 10–15kWh, at 0% VAT. Amppro Electrical supplies and installs Fox ESS across Doncaster and South Yorkshire.
A genuinely local installer — based in Armthorpe, Doncaster
AMP Pro Electrical is based at Armthorpe, Doncaster (DN3) — we're a local installer, not a national lead-broker reselling your enquiry. Your surveyor and your installer are the same local team, covering these postcode areas for Fox ESS battery installations:
Not sure if we reach you? We cover a 30-mile radius of Doncaster — see every area or call 0333 577 5464.
At a Glance
Fox ESS Battery Storage
Stackable charcoal towers from the UK's most-installed battery brand — batteries and hybrid inverters from one maker.
- Modular ranges from compact single units to stackable EP and EQ towers
- 9.32kWh usable in the EP11 — the range workhorse, with ~95% round-trip efficiency
- Batteries and hybrid inverters from one maker — one app, one support line
- Warranty extends to 10–12 years with registration and Fox Cloud connection
Why Us
Why Choose Amppro Electrical
MCS Certified
Every solar installation is MCS certified — required for SEG payments and grid connection.
Free Survey & Quote
A detailed site survey and fixed-price proposal, completely free with no obligation.
25-Year Warranty
Industry-leading panel warranties plus ongoing aftercare and performance monitoring.
Local Yorkshire Team
Based in Armthorpe, Doncaster — we are genuinely local and quickly available for aftercare.
9.32kWh
Usable storage in the EP11 — the range workhorse
12 yrs
Top warranty on the EQ range (registered + Fox Cloud)
~95%
Round-trip efficiency across the battery range
IP65
Rated for indoor or outdoor installation
What Is Fox ESS — and Who Is It Right For?
Fox ESS makes complete home energy systems — batteries, hybrid inverters, EV chargers and all-in-one units — that all run through a single app, Fox Cloud 2.0. It is not a niche brand: S&P Global's Residential Energy Storage Market Tracker ranked Fox ESS the UK's No.1 residential battery storage supplier by 2025 shipments (and No.1 globally, with around 10.5% market share). Octopus Energy installs Fox ESS hardware itself, and the kit is stocked by every major UK trade distributor.
We should be straight about origins: Fox ESS is a Chinese manufacturer (Foxess Co., Ltd, Wuxi) — but its UK support is genuinely local, with a national service centre in Coventry, a dedicated UK & Ireland warranty policy and an accredited-installer programme. The batteries use safe LFP (lithium iron phosphate) chemistry, are IP65-rated for indoor or outdoor mounting, run at 90% depth of discharge and achieve roughly 95% round-trip efficiency.
In our view Fox ESS suits three kinds of household best. First, anyone chasing value per kWh — at roughly £600–£900 per usable kWh installed, it consistently undercuts premium rivals while staying a BNEF Tier 1-listed manufacturer. Second, homes whose needs will grow: the modular EQ range starts small and stacks to around 40kWh, so you can add capacity later instead of buying it all up front. Third, anyone who wants one brand and one support route for solar panels, battery and EV charging — no multi-vendor finger-pointing when something needs looking at. If whole-home backup is your top priority, a Tesla Powerwall 3 may fit better; our battery storage page compares the options we install.
Fox ESS Battery Range at a Glance
The current UK line-up we install most. Figures are from Fox's own datasheets — note the honest difference between nominal and usable capacity (the range runs at 90% depth of discharge).
| EP5 | Most Popular EP11 | EQ Stackable | All-in-One (EVO / PowerQ) | |
|---|---|---|---|---|
| Usable storage | 4.66 kWh | 9.32 kWh | ~4.2–4.4 kWh per module | ~9.2 kWh (EVO) |
| Nominal capacity | 5.18 kWh | 10.36 kWh | 4.66–4.92 kWh per module | 10.24 kWh (EVO) |
| Scales up to | 20.72 kWh (4 in parallel) | 41.44 kWh (4 in parallel) | ~42 kWh nominal per stack | ~30 kWh (PowerQ tower) |
| Cold-weather heating | — | ✓ Built-in heater | EQ5000 yes / EQ4800 no | Confirmed at survey |
| Max warranty (registered + Fox Cloud) | 10 years | 10 years | 12 years | Confirmed on your quote |
| Format | Wall or floor, IP65 | Floor-standing, IP65 | Modular floor stack | Inverter + battery in one unit |
| Best for | Smaller homes and budgets | Most family retrofits | Homes that will grow into it | Simplest new solar + battery installs |
Fox's newest CQ7 modular range stacks even further — around 6.3kWh usable per module up to 98kWh nominal in a single stack — and suits larger properties; ask us at survey. We spec current-generation kit only, not the superseded ECS or Mira series.
Fox ESS Prices Installed in Doncaster
Published Fox ESS prices vary widely between sources, so we quote honest bands rather than a single headline figure. Most battery-retrofit packages — battery plus a Fox hybrid or AC-coupled inverter — land at £3,500–£6,500 installed for around 5–10kWh usable, and £5,500–£7,500 for 10–15kWh. That works out at roughly £600–£900 per usable kWh, which is the value end of the mainstream UK market. Complex retrofits (long cable runs, three-phase, awkward locations) can run above these bands, and anything much over £7,500 for a ~10kWh system is scenario-dependent rather than typical.
| System (usable storage) | Typical fitted price (0% VAT) | Best for |
|---|---|---|
| ~4.7kWh (EP5) | Typically £3,500–£4,500 | Couples and smaller semis with modest evening use |
| ~9.3kWh (EP11) | Typically £5,000–£6,500 | Family homes; evening-heavy usage |
| ~13–15kWh (EQ stack) | Typically £5,500–£7,500 | Larger homes, heat pumps, EV owners |
All home battery installations currently attract 0% VAT (in force since February 2024 and legislated to run to 31 March 2027), whether fitted with new solar or retrofitted to an existing array. Every figure above is a guide band — your exact price is fixed in writing after a free survey, once we know your consumption, tariff and installation position.
How Fox ESS Pairs With Solar Panels & EV Charging
Fox ESS is a major inverter manufacturer in its own right, and that shapes how systems are designed. For a new solar-and-battery install, one Fox hybrid inverter runs everything: the H1-G2 single-phase hybrid (3.7–6kW, dual MPPT, up to 200% panel oversizing) covers most Doncaster homes, the KH series (7–10kW) suits larger arrays, and the H3 family handles three-phase properties. The EVO and PowerQ all-in-one units go a step further, building the inverter into the battery cabinet for the tidiest possible install alongside new solar panels.
Adding a battery to existing solar works two ways: either the AC1-G2 AC-coupled unit, which leaves your current inverter completely alone, or a swap to a Fox hybrid. One thing we are always upfront about — Fox's high-voltage batteries pair only with Fox's own inverters, so if keeping a third-party hybrid inverter matters to you, the AC-coupled route (or a different brand of battery) is the honest recommendation.
For EV owners the ecosystem argument gets stronger: a Fox EV charger sits in the same Fox Cloud app as the battery and inverter, and the system plays well with smart tariffs — Intelligent Octopus Flux plus integrations with OVO, E.on, Hive and the Axle VPP. Charge the battery cheaply overnight in winter, run the house on stored solar in summer, and charge the car on the cheap window either way. Tariff compatibility depends on your exact inverter and metering, so we confirm it at survey rather than promise it blind.
Our Process
How It Works
From initial enquiry to a fully operational system — a clear, transparent process with no surprises.
Step 01
Free Survey
We visit your property, assess your roof, review your energy bills, and discuss your goals — all at no cost and no obligation.
Step 02
System Design
We design a bespoke system tailored to your property, energy usage, and budget — with a clear fixed-price quote and no hidden extras.
Step 03
Expert Install
Our MCS-certified team installs your system efficiently and safely, typically completing residential jobs in a single day.
Step 04
Aftercare
We handle all paperwork, DNO notifications, and MCS certification. Ongoing support and monitoring for the full lifetime of your system.
Fox ESS in South Yorkshire: The Local Picture
Across Doncaster and South Yorkshire the network operator is Northern Powergrid, and every battery must be registered with them — smaller systems are notified under G98 after installation, larger ones need G99 approval before energisation. Fox inverters carry the UK G98/G99 grid-connection compliance needed for that sign-off, and we submit and manage the paperwork as standard, so there is nothing for you to chase.
The local housing stock suits Fox kit well. The 1930s semis around Wheatley and Bennetthorpe, ex-colliery villages like Rossington and Edlington, and the new-build estates near Lakeside and Auckley almost all have a garage, utility room or sheltered outside wall that takes a wall-mounted EP5 or a floor-standing EP11 or EQ stack — and with IP65 rating plus a built-in heater on the EP11, outdoor mounting through a South Yorkshire winter is a realistic option, not a compromise. Being based in Armthorpe (DN3) keeps surveys and aftercare genuinely fast across the borough.
We install Fox ESS across the region — see our local pages for battery storage in Doncaster, Rotherham, Barnsley and Sheffield.
Why Have Amppro Install Your Fox ESS System?
Batteries are electrical work first and products second. Amppro Electrical is a Doncaster firm of NICEIC & NAPIT-registered electricians, and our renewables installs are MCS-certified — which matters for Fox ESS specifically, because the warranty extension only holds if the system is installed properly, registered with Fox within the deadline and connected to Fox Cloud monitoring. We handle all three at commissioning, along with the Northern Powergrid notification, and we put the price in writing before any work starts.
Just as important: we install several battery brands, so you get a recommendation rather than a one-brand pitch. If your survey says a different system fits better, we will tell you — compare the Tesla Powerwall 3, EcoFlow and Sigenergy pages, or start from our main battery storage guide.
Ready for a figure for your home? Book a free survey or call 0333 577 5464.
FAQ
Frequently Asked Questions
The standard warranty is 5 years from installation. It extends free of charge to 12 years in total on the stackable EQ range (10 years on EP models) provided the battery is registered on the Fox ESS website within 36 months and connected to Fox Cloud monitoring via a Fox datalogger — we sort both as part of commissioning. Within the warranty terms, Fox guarantees the battery retains at least 70% of its original capacity, subject to a per-module energy-throughput cap set out in the UK policy.
Fox ESS is a Chinese manufacturer (Foxess Co., Ltd, based in Wuxi) with a serious UK footprint: a national service centre in Coventry, a dedicated UK and Ireland warranty policy, and stock at every major UK trade distributor. On quality-by-volume, S&P Global’s Residential Energy Storage Market Tracker ranked Fox ESS the UK’s No.1 residential storage supplier by 2025 shipments — Octopus Energy installs Fox ESS kit itself.
Yes, via two routes. The AC1-G2 AC-coupled unit adds a Fox battery to your existing solar without touching your original inverter, or we can swap you onto a Fox hybrid inverter for a fully DC-coupled system. One honest caveat: Fox’s high-voltage batteries only pair with Fox’s own inverters, so if you want to keep a different brand of hybrid inverter, the AC-coupled route is the one to take.
As a typical range: £3,500–£6,500 installed for around 5–10kWh of usable storage, and £5,500–£7,500 for 10–15kWh, at 0% VAT. That works out at roughly £600–£900 per usable kWh — consistently at the value end of mainstream UK batteries. Complex retrofits can run higher, so treat these as guide bands; we confirm an exact fixed price after a free survey.
Fox ESS works with Intelligent Octopus Flux and has integrations with OVO, E.on, Hive and the Axle virtual power plant. Compatibility depends on your specific inverter and metering setup, so we confirm your tariff plan at the survey stage rather than promising it blind.
Yes — this is one of Fox’s strongest cards. The stackable EQ range grows module by module (stacks run from 2 up to 9 modules depending on the model, to roughly 42kWh nominal), and EP units can be paralleled up to four. We design the inverter and wiring with that headroom in mind, so adding a module later is a small job rather than a new system.
Both. The range is IP65-rated for indoor or outdoor installation and uses safe LFP (lithium iron phosphate) chemistry. For South Yorkshire winters it’s worth knowing the EP11 has a built-in heater and the warranty’s valid operating window is -10°C to 50°C — a sheltered wall, garage or utility room is ideal, and we advise on placement at the survey.
Thinking about solar battery storage in Doncaster?
Free, no-obligation quote from AMP Pro — MCS, NICEIC & NAPIT certified, based in Armthorpe. 0% VAT until March 2027.
Areas We Cover
Solar Battery Storage across Doncaster & South Yorkshire
From our Armthorpe base we cover towns right across the 30-mile radius. Find your area:
Area guides: Dearne Valley · Doncaster Villages · Five Towns · Isle of Axholme · North Nottinghamshire
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- MCS-certified installation
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- 0% VAT on residential
- Free energy report included
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