1. What is a Solar Panel Output Calculator?

Definition: This calculator estimates the energy output of solar panels in kilowatt-hours based on system size and peak sun hours.

Purpose: It helps homeowners and solar professionals estimate daily energy production from photovoltaic systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{kWh} \) — Energy output (kilowatt-hours)
• \( \text{Panel kW} \) — Solar system size (kilowatts)
• \( \text{Peak Hours} \) — Equivalent hours of full sun

Explanation: The system size is multiplied by peak sun hours to estimate daily energy production.

3. Importance of Solar Output Calculation

Details: Accurate output estimation helps in system sizing, energy savings calculations, and return on investment analysis.

4. Using the Calculator

Tips: Enter the solar system size in kW and your location's average peak sun hours. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are peak sun hours?
A: The equivalent number of hours per day when solar irradiance averages 1,000 watts per square meter.

Q2: How do I find my peak sun hours?
A: Check solar maps for your location or use 4-5 hours as a general average for most regions.

Q3: Does this account for system losses?
A: No, actual output may be 10-20% lower due to temperature, shading, and inverter inefficiencies.

Q4: What's a typical residential solar system size?
A: Most homes install 5-10 kW systems, depending on energy needs and roof space.

Q5: How do I convert panel watts to kW?
A: Divide watts by 1,000 (e.g., 300W panel = 0.3 kW).