Solar Inverter Brands UK: Reviewed & Compared (2026)
Independent reviews of the main solar inverter brands used by UK installers. Specs, UK pricing, shading performance, and when each brand is the right pick.
| Brand | Architecture | Warranty | Indicative UK price | |
|---|---|---|---|---|
| SolarEdge | Premium string inverter with per-panel DC optimisers | 12 years on inverter; 25 years on optimisers | £1,800–£3,200 installed (includes optimisers per panel) | Read review → |
| Enphase | Per-panel microinverter system | 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 | Read review → |
| Sungrow | Global volume leader in solar inverters | 10 years standard (extendable to 20 years) | £1,200–£2,200 installed | Read review → |
| Fronius | Austrian-engineered string inverter | 10 years standard; extendable to 20 | £1,500–£2,800 installed | Read review → |
| Growatt | China's largest residential inverter brand | 5–10 years standard (varies by model); extendable to 15 years | £700–£1,800 installed — among the cheapest hybrid options | Read review → |
String vs Microinverter vs Optimised: Which to Pick
- Standard string inverter (Sungrow, Fronius): cheapest, best for unshaded south-facing roofs
- String + DC optimisers (SolarEdge): per-panel MPPT at lower cost than microinverters. Good for partially shaded roofs
- Microinverters (Enphase): per-panel AC conversion, longest warranties, highest cost. Best for complex or expandable systems
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