Quick Comparison
Side-by-side overview of both products
| Fox ESS UK's #1 — 35% Market Share, 4.7/5 Trustpilot | GivEnergy UK Favourite with All-in-One Innovation | |
|---|---|---|
| Price | From £6,000 installed (H1-G2 + 5.76kWh ECS) | From £5,500 installed (9.5kWh All-in-One) |
| Warranty | 12 years on batteries, 5 years inverters (ext. to 10 with Fox Cloud) | 12 years on batteries, 5 years on inverters (extendable) |
| Rating | 4.7/5 Excellent (Trustpilot) | Strong UK consumer reviews |
| Inverter | H1-G2 (3-6kW), H3-G2 (5-12kW three-phase) | 3.6-6kW hybrid inverters with EPS |
| Battery | ECS (2.88-4.8kWh modules), EVO AIO (10.24kWh) | 2.6-9.5kWh modules, stackable |
| AIO Option | EVO: 5/8/10kW + 10.24kWh, IP66, up to 3 parallel | 9.5kWh wall-mounted with integrated inverter |
| EV Charger | L Series (7.3/11kW), separate installation | DC charger on select All-in-One models |
| Backup | Built-in EPS on all hybrid inverters (<10ms) | EPS backup on hybrid models |
| Market Position | #1 UK, #1 Europe, BNEF Tier 1 | Popular UK brand, strong direct-to-consumer |
Pros and Cons
An honest look at the strengths and weaknesses of each product
Fox ESS
UK's #1 — 35% Market Share, 4.7/5 Trustpilot
- 35% UK market share means the widest installer support network and fastest spare parts availability
- 4.7/5 Trustpilot rating from thousands of verified UK homeowners
- EVO All-in-One offers 5/8/10kW inverter with 10.24kWh battery in one IP66 outdoor unit
- ECS modular batteries are competitively priced with 12-year warranty
- Widest product range from budget EP5 to premium EVO, covering every price point
- Standard inverter warranty requires registration and Fox Cloud for extension
- L Series EV charger is a separate product — not integrated into the battery system
- App interface is functional but less polished than GivEnergy's community-driven platform
GivEnergy
UK Favourite with All-in-One Innovation
- 9.5kWh All-in-One is a compact, wall-mounted solution popular with UK homeowners
- Integrated DC EV charger available on specific All-in-One models
- GivEnergy app is one of the best in the industry with active community features
- 12-year battery warranty matches Fox ESS for long-term confidence
- Strong direct-to-consumer brand with high awareness and good resale value
- Smaller UK market share than Fox ESS — fewer installers with deep product experience
- All-in-One capacity is fixed per unit with less modular flexibility than Fox ECS
- Three-phase options are more limited compared to Fox ESS's H3-G2 range
Which Is Best For You?
The right choice depends on your priorities
Market confidence
Fox ESS's 35% UK share and 4.7/5 Trustpilot mean unmatched reliability data and parts availability
App experience
GivEnergy's app is widely regarded as the best in class with community features and granular control
Outdoor installation
Fox ESS EVO All-in-One is IP66 rated and designed for outdoor mounting — no garage required
Integrated EV charging
GivEnergy offers DC EV charging built into specific All-in-One models for a cleaner install
Scalability
Fox ECS modules scale to 33.6kWh per stack and EVO supports 3-unit parallel for 30.72kWh
Compact wall-mount
GivEnergy's 9.5kWh All-in-One is a tidy, wall-mounted solution for homes with limited floor space
The Bottom Line
Fox ESS wins on breadth, market confidence, and pricing flexibility. With 35% of the UK market and a 4.7/5 Trustpilot rating, it is the most proven residential solar brand in the country. The range from budget ECS modules to premium EVO All-in-One means there is a Fox ESS solution for every budget. GivEnergy fights back with a better app experience and the option for integrated DC EV charging on their All-in-One models — a genuine advantage if you want fewer boxes on the wall. For most Hampshire homeowners, we lean towards Fox ESS for its unmatched market track record and competitive pricing. If you specifically want an all-in-one with EV charging integration and love a great app, GivEnergy deserves serious consideration.
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