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Solar Panel Output Formula:
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The Solar Panel Capacity Calculator estimates daily energy production from solar panels based on panel wattage, peak sun hours, and system efficiency. It helps in planning solar installations and understanding potential energy generation.
The calculator uses the solar panel output formula:
Where:
Explanation: The equation calculates the estimated daily energy production in kilowatt-hours (kWh) by considering the panel's rated capacity, available sunlight, and system losses.
Details: Accurate solar panel output estimation is crucial for sizing solar systems, calculating return on investment, and ensuring the system meets energy needs.
Tips: Enter panel wattage in watts, peak sun hours (typically 3-6 hours depending on location), and system efficiency as a decimal (typically 0.75-0.85 for grid-tied systems). All values must be positive numbers.
Q1: What are typical peak sun hours?
A: Peak sun hours vary by location and season, typically ranging from 3-6 hours per day. Check solar insolation maps for your specific location.
Q2: What factors affect system efficiency?
A: Efficiency is affected by inverter efficiency, temperature losses, wiring losses, shading, dust, and panel degradation over time.
Q3: How accurate is this calculation?
A: This provides a rough estimate. Actual output may vary due to weather conditions, panel orientation, temperature, and other environmental factors.
Q4: Should I consider seasonal variations?
A: Yes, solar output varies significantly by season. Calculate for different seasons to understand annual production.
Q5: How do I convert monthly usage to system size?
A: Divide your monthly kWh usage by 30 to get daily needs, then use this calculator to determine the required panel wattage.