The Value Starter
What’s included in this set
10 x ja all black solar panels 405w
Total 4.05kwp solar power
Hanchu 3.68kw hybrid inverter
12-year warranty inverter
Hanchu 5.12kw battery
12-year warranty battery
Renusol mounting system kit
Phone app ready
Information
4 kW Solar PV — UK Annual Savings
A 4 kW solar PV system is one of the most popular sizes for UK homes.
How Much Does It Generate?
3,200–3,800 kWh per year
(UK average: ~3,400 kWh annually)
Estimated Yearly Savings (UK 2026 prices)
Your savings depend on how much solar energy you use in the home versus export to the grid.
| Use Pattern | Self-Use | Export | Estimated Savings |
| Typical home | 40% | 60% | £450 – £650 / year |
| Higher daytime use | 50% | 50% | £550 – £750 / year |
| With battery / high self-use | 70% | 30% | £650 – £850+ / year |
Based On:
- Electricity price: ~24–25p per kWh
- SEG export rate: typically 5p–15p per kWh
- Average generation: ~3,400 kWh per year
What This Means
A 4 kW solar system can typically save a UK household:
£450 to £850+ per year
The more solar electricity you use during the day (or store in a battery), the greater your savings.
