Solar Power Converter
Convert solar panel watts to daily and monthly kWh output based on sun hours.
Enter panel wattage and sun hours for instant energy estimates.
Enter panel details — see estimated energy output.
Energy Output Estimate
Solar panel energy output depends on panel wattage and sunlight hours.
Formula:
- Daily kWh = Panel Watts x Sun Hours x Efficiency / 1000
- Monthly kWh = Daily kWh x 30
- Yearly kWh = Daily kWh x 365
Typical efficiency factor: 0.75-0.85 (accounts for inverter losses, temperature, dirt, etc.)
Average peak sun hours by region:
- Arizona/Nevada: 6-7 hours
- California/Texas: 5-6 hours
- Midwest US: 4-5 hours
- Northeast US: 3.5-4.5 hours
- Northern Europe: 2.5-4 hours
- Australia: 4.5-6.5 hours
Common panel sizes:
- Residential panel: 300-400 watts
- Typical system (20 panels): 6-8 kW
Example:
- 400W panel x 5 sun hours x 0.80 efficiency = 1.6 kWh/day
- 20 panels = 8 kW system = 32 kWh/day = 960 kWh/month