Solar Panel Count Calculator
Number of panels for a target annual generation.
Result
- kWh per panel/year
- 374
- Panels needed
- 12
- System size
- 4.8 kW
Solar & Renewables calculators
Panel count, battery bank, off-grid load and payback period.
Battery Bank Sizing Calculator
Battery storage to cover overnight or off-grid loads.
Result
- Usable storage
- 10.87 kWh
- Nominal @ 48 V
- 226 Ah
Solar Payback Calculator
Years to pay back a solar PV system from electricity savings.
Result
- Annual saving
- 840
- Simple payback
- 8.33 years
Solar Panel Break-Even
Payback period for a rooftop PV array from local peak sun hours, electricity tariff and export price.
Result
- Annual generation
- 5,110 kWh
- Self-consumed
- 2,044 kWh
- Exported to grid
- 3,066 kWh
- Annual value
- €858
- Payback period
- 10.48 years
- 25-yr lifetime value
- €12,462