1. What is the Solar Panel Calculation?

The solar panel calculation estimates how many solar panels are needed to meet your daily energy consumption based on panel specifications and local sunlight conditions.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• \( \text{Consumption} \) — Your daily energy usage in kilowatt-hours
• \( \text{Panel Wattage} \) — Rated power output of each solar panel in watts
• \( \text{Sun Hours} \) — Average peak sunlight hours per day at your location
• \( \text{Efficiency} \) — System efficiency factor (typically 0.75-0.85)

Explanation: The calculation accounts for your energy needs, panel capacity, available sunlight, and system losses.

3. Importance of Solar Panel Calculation

Details: Proper sizing of your solar array ensures you generate enough electricity to meet your needs while optimizing system cost and performance.

4. Using the Calculator

Tips: Enter your average daily consumption in kWh, panel wattage in watts, local sun hours, and system efficiency (default is 0.75). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my daily sun hours?
A: Check solar maps for your location or consult local solar installers. Most areas range from 3-6 peak sun hours daily.

Q2: What's a typical system efficiency?
A: Most systems operate at 75-85% efficiency due to factors like temperature, wiring losses, and inverter efficiency.

Q3: Should I round up the number of panels?
A: Yes, the calculator automatically rounds up since you can't install a fraction of a panel.

Q4: Does this account for battery storage?
A: No, this calculates production needs. Add 20-30% more panels if including battery storage for nighttime use.

Q5: How does panel orientation affect this?
A: South-facing panels (in northern hemisphere) at optimal tilt will perform best. Adjust sun hours if using suboptimal angles.