Investment Analysis Tool
Solar Panel ROI Calculator UK
Calculate your complete return on investment for solar panels in the UK. See your payback period and 25-year lifetime earnings.
Solar System Details
Typical: 3400 kWh for 4kW system
Without battery: 30-40% | With battery: 60-80%
UK Energy Rates & Assumptions
Current UK average: £0.34/kWh
Typical SEG rates: £0.06-0.15/kWh
Conservative estimate: 3-5% annually
Understanding Your Solar Panel ROI
Payback Period
The time it takes for your cumulative savings to equal your initial investment. Typically 7-12 years for UK homes.
Lifetime Returns
Solar panels last 25+ years. After payback, all benefits are pure profit. Most systems generate £20k-40k profit.
Property Value
Solar panels can increase property value by up to 30% of installation cost, making homes more attractive to buyers.