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Solar Panel Calculator

Solar Panel Calculation Formula:

\[ \text{Number of Panels} = \frac{\text{Usage (kWh/day)}}{\text{Wattage (W)} \times \text{Hours (hours/day)} \div 1000} \]

kWh/day
W
hours/day

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1. What is the Solar Panel Calculator?

The Solar Panel Calculator estimates the number of solar panels needed to meet your daily energy consumption based on panel wattage and average daily sunlight hours.

2. How Does the Calculator Work?

The calculator uses the following formula:

\[ \text{Number of Panels} = \frac{\text{Usage (kWh/day)}}{\text{Wattage (W)} \times \text{Hours (hours/day)} \div 1000} \]

Where:

Explanation: The formula converts wattage to kilowatts and calculates how many panels are needed to produce your daily energy requirement.

3. Importance of Solar Panel Calculation

Details: Accurate solar panel calculation is crucial for designing efficient solar power systems, estimating costs, and ensuring your energy needs are met.

4. Using the Calculator

Tips: Enter your daily energy usage in kWh, the wattage of the solar panels you're considering, and the average daily peak sunlight hours in your location.

5. Frequently Asked Questions (FAQ)

Q1: What is considered average peak sunlight hours?
A: This varies by location but typically ranges from 3-6 hours per day. Check solar insolation maps for your specific area.

Q2: Should I account for system losses?
A: Yes, most systems have 10-20% losses. Consider adding a safety margin of 10-20% to your calculated panel count.

Q3: Does panel orientation affect the calculation?
A: Yes, panels should ideally face true south (in northern hemisphere) at an optimal tilt angle for maximum efficiency.

Q4: What about seasonal variations?
A: The calculation uses average daily sunlight. You may want to calculate for your worst-case month (usually December) to ensure year-round coverage.

Q5: Can I mix different wattage panels?
A: While possible, it's generally better to use panels of the same wattage for optimal system performance and easier maintenance.

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