EcoFlow STREAM Ultra
All-in-one balcony system: 800W microinverter, a built-in 1.92kWh LFP battery and 4-channel MPPT — store the day's generation and use it at night.
Solar for people without a roof to fill: plug-in kits you set up yourself, no installer needed — and take with you when you move. Germany has over 3 million of them; the UK made them legal in April 2026. Here's everything you need to do it properly.
Compare the best balcony and plug-in solar kits in the UK — EcoFlow STREAM, Anker SOLIX, Zendure — by output, battery, price and our verdict. Now legal up to 800W.
5 compared →Compare plug-in balcony solar batteries in the UK — Anker Solarbank, EcoFlow STREAM, Zendure, Marstek — by usable kWh, PV input, cycle life and price.
4 compared →All-in-one balcony system: 800W microinverter, a built-in 1.92kWh LFP battery and 4-channel MPPT — store the day's generation and use it at night.
Anker's flagship plug-in balcony battery: 5kWh usable, a huge 5,000W of PV input across four MPPTs and an 800W grid-tied output — expandable to 30kWh with add-on packs.
An 800W IP67 microinverter with Wi-Fi and app control — the cheapest legal route into balcony solar, add your own panels.