Solar Angle Formula:
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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.
The calculator uses the formula:
Where:
Explanation: The formula accounts for seasonal variations in the sun's path by adjusting for Earth's tilt and your location.
Details: Proper panel angle maximizes energy production, improves system efficiency, and optimizes return on investment.
Tips:
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.