1. What is a Solar kWh Calculator?

Definition: This calculator estimates the annual energy production of solar panels based on their size and daily sunlight exposure.

Purpose: It helps homeowners and solar installers determine potential energy generation from solar panel systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{kWh} \) — Annual energy production (kilowatt-hours)
• \( \text{Size} \) — Solar panel system size (Watts)
• \( \text{Hours} \) — Average daily sunlight hours

Explanation: The formula calculates the total yearly energy output by multiplying panel size by daily sunlight hours and the number of days in a year, then converting to kWh.

3. Importance of Solar Energy Calculation

Details: Accurate energy production estimates help determine system sizing, return on investment, and energy savings potential.

4. Using the Calculator

Tips: Enter the solar panel system size in Watts and average daily sunlight hours. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical daily sunlight hours value?
A: Most locations average 4-6 peak sunlight hours per day, but this varies by location and season.

Q2: Should I use panel wattage or system wattage?
A: Use the total system wattage (sum of all panels' wattages) for accurate calculations.

Q3: Does this account for system inefficiencies?
A: No, this is a theoretical maximum. Real-world systems typically produce 70-85% of this value due to various factors.

Q4: How can I estimate my sunlight hours?
A: Check solar maps or consult local solar installation companies for your area's average.

Q5: Can I calculate monthly instead of annual production?
A: Yes, replace 365 with 30 in the formula for a monthly estimate.