1. What is Solar Panel Wattage Calculation?

This calculation determines the wattage of solar panels needed to produce a specific amount of energy (kWh) given a certain number of sunlight hours. It helps in sizing solar power systems appropriately.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Required solar panel wattage (watts)
• \( kWh \) — Energy needed (kilowatt-hours)
• \( h \) — Daily sunlight hours

Explanation: The formula converts kWh to watt-hours (by multiplying by 1000) and then divides by the number of sunlight hours to determine the required wattage.

3. Importance of Solar Panel Sizing

Details: Proper solar panel sizing ensures your system can generate enough electricity to meet your needs while optimizing cost and space requirements.

4. Using the Calculator

Tips: Enter your daily energy needs in kWh and average daily sunlight hours. For accurate results, use realistic sunlight hours for your location.

5. Frequently Asked Questions (FAQ)

Q1: How many sunlight hours should I use?
A: This varies by location and season. Check solar insolation data for your area, typically 4-6 hours for most locations.

Q2: Does this account for system losses?
A: No, this is a basic calculation. Real-world systems should account for 10-25% losses due to inefficiencies.

Q3: Can I use this for off-grid systems?
A: Yes, but off-grid systems need additional calculations for battery storage and days of autonomy.

Q4: What if my usage varies by season?
A: Size your system based on your highest usage season or consider a hybrid system.

Q5: How does panel orientation affect this?
A: Optimal tilt and direction can increase effective sunlight hours, while poor orientation reduces them.