Estimate annual savings and payback time for a balcony solar panel kit in the UK. Free 2026 calculator.
Work out how much a balcony solar panel kit could save you each year — and how quickly it pays for itself. Based on 2026 UK prices and generation figures from our balcony solar guide.
UK balcony kits (plug-in solar) typically range from 300 W to 800 W.
2026 prices range from £300 to £1,000 plus £100–£200 installation. Drag to match your quote.
Current UK Energy Price Cap average ≈ 24.5p/kWh.
Without a battery, most flats use 30–60% of what their balcony kit generates.
Smart Export Guarantee rates vary by supplier, typically 5–15p/kWh.
Your estimate
UK annual generation estimate: 850 kWh per kW of panels.
Estimates assume a south-facing balcony with typical UK weather and shading. Actual generation varies by location, orientation and season. Balcony solar in the UK is legal — no planning permission needed for most flats, but check your lease and follow the microgeneration safety guidance.