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Solar Angle Calculator for Solar Panels

Solar Angle Formula:

\[ \text{Angle} = \text{Latitude} - 23.5 \times \cos\left(\frac{360 \times \text{Day}}{365}\right) \]

°
(1-366)

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1. What is a Solar Angle Calculator?

Definition: This calculator determines the optimal tilt angle for solar panels based on your location's latitude and the day of year.

Purpose: It helps maximize solar energy collection by calculating the best angle for panel installation.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \text{Angle} = \text{Latitude} - 23.5 \times \cos\left(\frac{360 \times \text{Day}}{365}\right) \]

Where:

Explanation: The formula accounts for seasonal variations in the sun's path by adjusting for Earth's tilt and your location.

3. Importance of Solar Angle Calculation

Details: Proper panel angle maximizes energy production, improves system efficiency, and optimizes return on investment.

4. Using the Calculator

Tips:

5. Frequently Asked Questions (FAQ)

Q1: Should I adjust my panels seasonally?
A: Yes, adjusting 4 times yearly can increase output by 10-15% versus fixed panels.

Q2: What's the best angle for year-round fixed panels?
A: Typically your latitude, but this calculator gives the optimal seasonal angle.

Q3: How precise does the angle need to be?
A: Within 5° is generally acceptable, as output only drops slightly.

Q4: Does this work for both hemispheres?
A: Yes, use negative latitude for southern hemisphere locations.

Q5: What about roof angle limitations?
A: If your roof angle differs by more than 15°, consider mounting systems that adjust panel tilt.

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