1. What is a Solar Panel Sun Angle Calculator?

Definition: This calculator determines the optimal angle for solar panels based on your location's latitude and the sun's declination angle.

Purpose: It helps maximize solar energy collection by calculating the ideal panel tilt angle relative to the sun's position.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( θ \) — Optimal sun angle for solar panels (degrees)
• latitude — Your geographic latitude (degrees)
• \( δ \) — Solar declination angle (degrees)

Explanation: The formula adjusts the panel angle based on how high the sun appears in your sky at different times of year.

3. Importance of Solar Panel Angle

Details: Proper panel angle maximizes energy production by ensuring panels are perpendicular to incoming sunlight throughout the year.

4. Using the Calculator

Tips: Enter your location's latitude (positive for north, negative for south) and the current solar declination angle.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my latitude?
A: Use GPS coordinates or online mapping tools. Most smartphones can provide this information.

Q2: What is solar declination?
A: The angle between the sun's rays and Earth's equatorial plane, varying seasonally from +23.45° to -23.45°.

Q3: Should I adjust my panels seasonally?
A: Yes, adjusting 4 times per year (15° changes) can improve efficiency by 5-15% over fixed panels.

Q4: What about roof-mounted systems?
A: If your roof angle isn't ideal, the efficiency loss is typically less than 10% from optimal.

Q5: Does this work for both hemispheres?
A: Yes, use positive latitude for northern hemisphere and negative for southern hemisphere.