Growatt Review UK (2026)
Quick Answer
China's largest residential inverter brand — best-value hybrid inverter with broad battery compatibility.
Data verified April 2026. UK installed pricing varies with installer, site and package.
At a Glance
| Origin | China (founded 2011) — world's largest residential inverter maker by volume |
| UK support | Growing — UK distribution via major wholesalers, established installer base |
| Capacity / sizing | 1 kW – 15 kW single-phase; three-phase available |
| Efficiency | 97.5%+ peak; ~96% European-weighted |
| Warranty | 5–10 years standard (varies by model); extendable to 15 years |
| Indicative UK price | £700–£1,800 installed — among the cheapest hybrid options |
Tariff Compatibility
Growatt works with the following UK export tariffs (see our best Octopus tariffs for solar guide):
- Octopus Flux (with compatible battery)
- Outgoing Fixed
Strengths
- Lowest cost hybrid inverter on the UK market — typically £300–£600 cheaper than Sungrow or GoodWe
- Broad battery compatibility — Growatt, Pylontech, BYD, and many others
- Full MCS-approved range for UK residential installations
- Simple ShinePhone monitoring app with system-level data
Weaknesses
- Shorter standard warranty (5 years on some models) than Sungrow or Fronius
- Build quality considered mid-tier — some UK installers prefer Sungrow or SolaX for long-term reliability
- Customer service response times have been mixed in Trustpilot reviews
- Not on the Intelligent Octopus Flux approved list
Who Growatt Suits Best
Budget-conscious installs where warranty length is less critical than upfront cost. Common choice on tight-margin quotes and new-build solar.
When to Avoid
You value long-term warranty and brand reliability — step up to Sungrow or SolaX for £300–£500 more.
Popular Models
- MIN TL-XH series (3–6 kW string)
- MOD TL3-XH (three-phase)
- SPH hybrid (3–10 kW with battery support)
Frequently Asked Questions
Are Growatt inverters any good?
Yes for price-sensitive installs — Growatt is the world's largest residential inverter maker and its products are MCS-approved and widely used in the UK. Mid-tier build quality vs premium brands like Sungrow or Fronius, but a fraction of the cost.
How long is the Growatt warranty?
Standard warranty is 5–10 years depending on model. It is extendable to 10 or 15 years with paid extensions. Shorter than Sungrow (10 years standard) and far shorter than Enphase (25 years).
Does Growatt work with Pylontech batteries?
Yes. Growatt SPH hybrid inverters are well-tested with Pylontech, BYD, and Growatt's own batteries. It is one of the most flexible inverters for battery choice in the UK.
Growatt vs GoodWe — which is better?
GoodWe has a slightly better build reputation and warranty structure (10 years standard). Growatt is cheaper and has broader battery compatibility. For a first-time installer-choice, GoodWe is marginally preferable; for price-sensitive installs, Growatt wins.
Compare with Other Inverter Brands
| Brand | UK support | Warranty | Indicative price | |
|---|---|---|---|---|
| SolarEdge | Strong | 12 years on inverter; 25 years on optimisers | £1,800–£3,200 installed (includes optimisers per panel) | View → |
| Enphase | Strong | 25 years on microinverters (among the longest in the market) | £2,500–£4,000 installed on a typical 4 kW system — adds ~£200/panel vs string | View → |
| Sungrow | Strong | 10 years standard (extendable to 20 years) | £1,200–£2,200 installed | View → |
| Fronius | Moderate | 10 years standard; extendable to 20 | £1,500–£2,800 installed | View → |
Get a Quote Including Growatt
Most MCS-certified installers carry multiple inverter brands — ask for a quote specifying Growatt if you want a system with this inverter. Use the form below to reach local installers.
Sources
John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He fact-checks all content against official MCS and Ofgem data and maintains relationships with MCS-certified installers across the UK.