The UK plug-in solar market arrived properly in 2026. Before that, your options were either a rooftop system costing £10,000+, a power station that didn't connect to your home circuit, or a grey-area self-install. Now there are UKCA-certified 800W kits that plug into a standard socket, feed directly into your home circuit, and pay back in three years.
1. EcoFlow STREAM 800W — Editor's Pick
Price: £499 · Payback: ~3 years · Best for: most buyers
Bifacial panels, polished app, proper UK support. The most complete package available. Not the cheapest — the best overall experience.
2. Anker SOLIX RS40P — Best Value
Price: £419–£449 · Payback: ~2.5 years · Best for: budget-conscious buyers
£50–£80 cheaper than EcoFlow. Amazon Prime delivery and 30-day returns. Monofacial panels (slightly less generation than bifacial). App is functional but less polished. The hardware itself is just as solid.
3. Hoymiles HM-800 DIY Build — Best Budget
Price: £280–£350 (sourced separately) · Payback: ~2 years · Best for: technically confident buyers
Buy the microinverter, source your own panels, build your own mount. Significantly cheaper than pre-packaged kits. Requires more research and confidence. The most popular microinverter in Europe.
Which kit should you buy?
| Kit | Price | Best for | Payback |
|---|---|---|---|
| EcoFlow STREAM | £499 | Most buyers — best overall experience | ~3 years |
| Anker RS40P | £419 | Budget buyers — Amazon native | ~2.5 years |
| Hoymiles DIY | £280 | Technical buyers — best value | ~2 years |
The bottom line
The EcoFlow STREAM is the benchmark. The Anker RS40P is the value pick. The Hoymiles is the DIY choice. The right kit depends on how much you want to spend and how much complexity you're comfortable with — not on which brand has the nicest marketing. Buy one. Install it. The analysis paralysis is costing you money every quarter.
Pair any of these kits with Octopus Agile and the savings improve further — half-hourly pricing means you arbitrage cheap overnight electricity against your daytime solar generation.
