Quick Comparison
Side-by-side overview of both products
| Fox ESS The UK's #1 Solar Battery Brand — 35% Market Share | GoodWe Global Solar Leader — Free PLUS+ 10-Year Warranty Extension | |
|---|---|---|
| Price | From £6,000 installed (4kW inverter + 5.76kWh battery) | From £5,000 installed (3.6kW inverter + 6.6kWh battery) |
| Warranty | 12 years on batteries (ECS/EQ/EVO), 5 years on inverters (ext. to 10 with Fox Cloud) | Free PLUS+ 10-year inverter warranty, Lynx Home F 10+10 year battery warranty |
| Rating | 4.7/5 Excellent (Trustpilot) | Established global reputation |
| Inverter | H1-G2 (3-6kW, 2 MPPTs, IP65, fanless) | ES G2 (3.6-6kW, 2 MPPTs, IP65, plug & play) |
| Battery | ECS Series (2.88-4.8kWh modules, up to 7 per stack) | Lynx Home F (3.27kWh modules, 2-5 per stack) |
| Chemistry | LiFePO4 — 6,000+ cycles | LiFePO4 — long cycle life |
| Backup | EPS built-in (switchover <10ms) | UPS function (<10ms switchover) |
| Market Rank | #1 UK, #1 Europe, #2 Global (residential) | #6 global inverter manufacturer (Wood Mackenzie) |
| Manufacturer | Backed by Tsingshan Group (Fortune 500) | Shanghai-listed, 5,000+ employees, BNEF Tier 1 |
Pros and Cons
An honest look at the strengths and weaknesses of each product
Fox ESS
The UK's #1 Solar Battery Brand — 35% Market Share
- 35% UK domestic market share — the most trusted brand in British homes
- 4.7/5 Excellent Trustpilot rating with thousands of verified reviews
- 12-year warranty on ECS, EQ, and EVO battery ranges
- ECS modular batteries scale from 2.88kWh to 33.6kWh per stack
- EVO All-in-One outdoor-rated system with integrated inverter and battery
- Standard inverter warranty is only 5 years without registration
- No integrated DC EV charger option — requires separate L Series charger
- Fox Cloud registration required for extended inverter warranty
GoodWe
Global Solar Leader — Free PLUS+ 10-Year Warranty Extension
- Free PLUS+ programme extends inverter warranty from 5 to 10 years at no extra cost
- Typically £800-1,200 cheaper per system than Fox ESS equivalents
- 100GW+ installed globally across 100+ countries — proven at scale
- Lynx Home F high-voltage battery with 10+10 year warranty
- ES G2 inverter offers plug-and-play installation for faster fitting
- Lower UK brand recognition compared to Fox ESS's market dominance
- Trustpilot presence less established than Fox ESS's 4.7/5 rating
- Requires SEMS Portal connection for PLUS+ warranty activation
Which Is Best For You?
The right choice depends on your priorities
Proven UK reliability
Fox ESS holds 35% UK market share with a 4.7/5 Trustpilot rating — the most battle-tested choice for British homes
Best value for money
GoodWe systems cost £800-1,200 less with the free PLUS+ 10-year warranty, making them the smart budget pick
Maximum battery capacity
Fox ESS ECS stacks up to 33.6kWh with 7 modules, ideal for larger homes with high consumption
Outdoor installation
The Fox ESS EVO All-in-One is IP66 rated for outdoor use — no garage or utility room needed
Three-phase homes
GoodWe's ET Plus+ three-phase inverter offers 5-10kW with 98.2% efficiency for larger properties
Quick installation
GoodWe's plug-and-play ES G2 design means faster fitting and lower labour costs
The Bottom Line
For most Hampshire homeowners, Fox ESS is the safer choice — it is the UK's most popular brand for good reason, with a proven track record, 4.7/5 Trustpilot rating, and a 12-year battery warranty. However, GoodWe offers genuinely compelling value: the free PLUS+ warranty extension gives you a 10-year inverter warranty at no extra cost, and systems typically cost £800-1,200 less. If budget matters and you want excellent quality from a Tier 1 global manufacturer, GoodWe is hard to beat. We install both brands daily and are happy to recommend the best fit during your free home survey.
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