1. What is a Solar Panel Energy Calculator?

Definition: This calculator estimates the energy output of solar panels based on their power rating and operating time.

Purpose: It helps solar energy system designers and homeowners determine potential energy production from solar panels.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Energy output (watt-hours)
• \( P \) — Power rating of solar panel (watts)
• \( T \) — Time duration (hours)

Explanation: The solar panel's power rating is multiplied by the number of operating hours to calculate total energy production.

3. Importance of Solar Energy Calculation

Details: Accurate energy estimation helps in system sizing, battery storage planning, and evaluating return on investment for solar installations.

4. Using the Calculator

Tips: Enter the solar panel's rated power in watts and the expected operating time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Is this the actual energy I'll get from my solar panels?
A: This is theoretical maximum. Actual output depends on sunlight intensity, panel angle, temperature, and system efficiency.

Q2: How do I find my solar panel's power rating?
A: Check the manufacturer's specifications - it's typically labeled as "Rated Power" or "Pmax" in watts.

Q3: Should I use peak sun hours instead of actual hours?
A: For daily estimates, yes. Multiply panel wattage by your location's average peak sun hours (typically 3-6 hours).

Q4: How do I convert watt-hours to kilowatt-hours?
A: Divide the watt-hour result by 1000 (1 kWh = 1000 Wh).

Q5: Does this account for system losses?
A: No, for realistic estimates, multiply the result by 0.75-0.85 to account for typical system losses.