- 1GivEnergy is the UK’s best-selling home battery brand since 2019 – a UK company with headquarters in Newcastle designing its own hardware and software.
- 2Best-in-class Octopus Energy integration – exclusive launch partner for Intelligent Octopus Flux with automatic charge/discharge optimisation delivering £450+ annual savings.
- 3Industry-leading 12-year warranty on residential products – longer than most competitors including Fronius (5yr standard) and Sunsynk (5yr).
- 4Customer support is the main criticism – slow response times and WhatsApp-only contact frustrate some users, though product quality is praised.
GivEnergy has established itself as one of the most popular home battery and inverter brands in the UK, becoming the country’s best-selling home battery storage system in 2019 and maintaining strong market presence since. Founded in the UK with manufacturing in China through its wholly-owned subsidiary, GivEnergy designs its own inverters, batteries, and monitoring systems rather than simply rebadging third-party equipment.
The GivEnergy inverter range spans from single-phase hybrid units for typical UK homes to powerful three-phase systems for larger properties and small commercial applications. The company’s focus on smart tariff optimisation, particularly with Octopus Go, Agile, and Intelligent Flux, has made GivEnergy systems especially attractive to homeowners looking to maximise savings through time-of-use electricity pricing.
This review covers the complete GivEnergy inverter range, from the popular Gen 3 single-phase hybrids to the new 20kW three-phase units and the All-in-One integrated systems. We examine specifications, real-world performance, app functionality, Octopus integration, and how GivEnergy compares to alternatives like Sunsynk, Solis, and SolaX.
Why People Choose It
- UK company – local support, understands UK market
- Best-in-class Octopus tariff integration
- Industry-leading 12-year warranty
- Comprehensive API for Home Assistant
- IP65 outdoor installation capable
- Under 20ms EPS backup switchover
Considerations
- Customer support – slow response times reported
- App reliability – mixed reviews (2.85/5)
- Proprietary batteries only
- WiFi reconnection issues after router changes
- Training required for warranty validity
- Schedules cannot cross midnight
SolarLove Rating
Based on performance, value, reliability, and support
GIV-HY-5.0-G3 + 9.5kWh Battery
- 5kW hybrid suits most UK homes
- 9.5kWh battery for typical consumption
- 12-year warranty on both components
- Best-in-class Octopus Flux integration
- Under 20ms EPS backup switchover
- G98 compliant – no DNO approval needed
Gen 3 Single-Phase Hybrid Inverters
The Gen 3 hybrid inverters represent GivEnergy’s core residential offering, combining solar inverter and battery inverter functions in a single unit. These DC-coupled systems allow direct connection of solar panels while also managing battery charging and discharging.
| Model | GIV-HY-3.6-G3 | GIV-HY-5.0-G3 | GIV-HY-8.0-G3 | GIV-HY-10.0-G3 |
|---|---|---|---|---|
| Nominal AC output | 3.6kW | 5kW | 8kW | 10kW |
| Max PV input | 7.5kWp | 7.5kWp | 9kWp | 12kWp |
| MPPT trackers | 2 | 2 | 2 | 2 |
| MPPT range | 120-550V | 120-550V | 120-550V | 120-550V |
| Max efficiency | 97.6% | 97.6% | 97.6% | 97.6% |
| EPS output | 3.6kW | 5kW | 8kW | 10kW |
Smart Tariff Integration
GivEnergy’s standout feature is seamless integration with smart electricity tariffs, particularly those offered by Octopus Energy. The company was the exclusive launch partner for Intelligent Octopus Flux, delivering automatic charge and discharge optimisation.
| Tariff | Integration | Savings |
|---|---|---|
| Octopus Intelligent Flux | Automatic API | £450+ per year |
| Octopus Go | Manual scheduling | Charge 00:30-05:30 |
| Octopus Agile | Home Assistant | Variable rate |
| Economy 7 | Manual scheduling | Off-peak charging |
All-in-One Systems
The All-in-One combines an AC-coupled inverter with a 13.5kWh LiFePO4 battery in a single integrated unit. The newer All-in-One 2 features a more powerful 12kW hybrid inverter with a 15-year warranty.
| Battery capacity | 13.5kWh (both models) |
| All-in-One 2 inverter | 12kW hybrid (DC and AC) |
| Peak power | 14.4kW off-grid |
| All-in-One 2 warranty | 15 years |
| Parallel capability | Up to 6 units (80kWh) |
Pricing
| Model | Trade Price | Installed (est.) |
|---|---|---|
| GIV-HY-3.6-G3 | £700 – £850 | £1,200 – £1,500 |
| GIV-HY-5.0-G3 | £800 – £950 | £1,300 – £1,600 |
| GIV-HY-8.0-G3 | £1,000 – £1,200 | £1,600 – £2,000 |
| GIV-HY-10.0-G3 | £1,100 – £1,300 | £1,800 – £2,200 |
GivEnergy vs Competitors
| Aspect | GivEnergy | Sunsynk | Fox ESS |
|---|---|---|---|
| Company | UK-based | UK office | UK office |
| Warranty | 12 years | 5 years | 10 years |
| Octopus integration | Best-in-class | Manual | Good |
| Battery compatibility | Proprietary | Wide 48V | Proprietary |
| Price | Mid-range | Mid-range | Budget-mid |
Summary
GivEnergy has earned its position as the UK’s leading home battery storage brand through tight hardware-software integration, excellent smart tariff compatibility, and an industry-leading 12-year warranty. The company’s partnership with Octopus Energy on Intelligent Octopus Flux demonstrates the value of this integration, with automatic charge and discharge optimisation that can deliver over £450 in annual savings without user intervention.
The Gen 3 hybrid inverter range offers solid specifications with up to 97.6% efficiency, 99.9% MPPT tracking, and IP65 ratings for outdoor installation. The three-phase range addresses larger properties, while the All-in-One systems provide a space-saving integrated solution with the All-in-One 2 offering an impressive 15-year warranty.
The main criticism centres on customer support, with users reporting difficulty reaching human assistance and slow response times. For UK homeowners planning to use Octopus smart tariffs, GivEnergy remains a strong choice. Those prioritising off-grid capability or wider battery compatibility may prefer Sunsynk as an alternative.
Compare GivEnergy with other UK options in our best solar inverters guide. For system costs, see our solar panel costs guide.
