1. What is the Solar Panel Calculation?

This calculation determines how many solar panels you need to meet your daily energy consumption based on panel specifications and local sunlight conditions.

2. How Does the Calculator Work?

The calculator uses the solar panel equation:

Where:

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

Explanation: The equation converts your daily energy needs into the number of panels required to generate that amount, considering real-world conditions.

3. Importance of Proper Sizing

Details: Correctly sizing your solar array ensures you meet your energy needs without over-investing in unnecessary panels. Proper calculation accounts for local weather patterns and system inefficiencies.

4. Using the Calculator

Tips:

• Get your daily consumption from utility bills (divide monthly kWh by 30)
• Panel wattage is typically 250-400W for residential systems
• Sun hours vary by location (check solar maps for your area)
• Efficiency accounts for inverter losses, wiring, dirt, etc.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 1000 in the calculation?
A: This converts watt-hours to kilowatt-hours to match consumption units.

Q2: What's a typical system efficiency value?
A: Most systems use 0.75-0.85 (75%-85% efficiency) accounting for various losses.

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

Q4: Does this account for battery storage?
A: No, this calculates production needs. Battery sizing requires additional calculations.

Q5: How accurate is this estimate?
A: It provides a good starting point, but professional assessment is recommended for actual installations.