Solar Panel Output Calculator

Calculate the power output of your solar panels based on panel specifications, sunlight hours, and installation factors.

The rated power output of your solar panel (typically 300W-500W)
How many panels are you calculating for?
Average daily peak sun hours in your location (typically 4-6 hours)
Solar panel efficiency rating (typically 15-23%)
Power loss per degree Celsius above 25°C (typically -0.3% to -0.5%/°C)
Average daytime temperature at your location
Losses from dirt, wiring, inverter, etc. (typically 10-20%)

How to Use This Calculator

  1. Panel Rating: Enter the rated power output of your solar panels in watts (W).
  2. Number of Panels: Specify how many panels you're calculating for.
  3. Peak Sun Hours: Enter the average daily peak sun hours for your location.
  4. Panel Efficiency: Input the efficiency rating of your solar panels.
  5. Temperature Coefficient: Enter the panel's temperature coefficient (power loss per degree).
  6. Average Temperature: Input the average daytime temperature at your location.
  7. System Losses: Account for various system losses like dirt, wiring, and inverter efficiency.

Understanding the Results

  • Daily Output: Estimated energy production per day in kilowatt-hours (kWh).
  • Monthly Output: Approximate energy production per month.
  • Annual Output: Total estimated yearly energy production.

Note: This calculator provides estimates based on ideal conditions. Actual output may vary due to:

  • Weather conditions and seasonal variations
  • Panel orientation and tilt angle
  • Shading from nearby objects
  • Dust and dirt accumulation
  • Panel age and degradation

For more accurate predictions, consider consulting with a solar installation professional.