Your Details

Yearly consumption 3,500 kWh
1,500 kWh (low) 10,000 kWh (high/EV)

UK average: 2,700 kWh. Check your annual bill or smart meter.

UK electricity prices have risen ~5-6% annually over the past decade

System capacity 4.0 kWp
2 kWp 10 kWp
Better Option

Solar Panels

£0
Total savings over 25 years
Better Option

Stay on Grid

No upfront investment

Total Cost
£0
Over 25 years
  • Year 1 electricity bill£0
  • Year 10 electricity bill£0
  • Year 25 electricity bill£0
  • Average annual cost£0
Better Option

Go Solar

4kWp + 10kWh battery

Total Cost
£0
Over 25 years
  • Upfront investment£0
  • Remaining grid costs£0
  • SEG export income-£0
  • Maintenance (~£100/yr)£0

Cumulative Cost Over Time

Grid Only
Solar

Calculation Assumptions

Solar generation
900 kWh/kWp/year
Self-consumption rate
70% (with battery)
SEG export rate
15p/kWh
Panel degradation
0.5%/year
Inverter replacement
Year 12 (~£800)
Battery replacement
Year 12 (if applicable)

Solar Benefits

  • Break-even pointYear 8
  • Lifetime savings£0
  • Return on investment0%
  • Equivalent interest rate0%

Environmental Impact

  • Lifetime CO₂ saved0 tonnes
  • Equivalent trees planted0
  • Car miles offset0
  • Flights offset0
Disclaimer: These projections are estimates based on assumed energy price inflation and typical UK solar performance. Actual results will vary based on your location, roof orientation, energy usage patterns, and future electricity prices. Energy prices are particularly difficult to predict long-term. Always obtain professional quotes and consider your personal circumstances before investing.