solar angle flagstaff az june 20th 2025

2 min read 27-11-2024

The sun's position in the sky significantly impacts solar energy collection. This article details the solar angle in Flagstaff, Arizona on June 20th, 2025, providing valuable information for solar panel placement and energy production estimates. Understanding solar angles is crucial for maximizing solar energy harvesting.

Calculating the Solar Angle

Precise calculation of the solar angle requires specialized software or online calculators that consider factors like latitude, longitude, date, and time. Flagstaff's location (approximately 35.1° N, 111.6° W) allows for reasonably accurate estimations using readily available tools. Several online solar calculators are available for free. Simply enter Flagstaff's coordinates and the date (June 20th, 2025) to get a detailed report.

Solar Noon Angle

On June 20th, 2025 (near the summer solstice), Flagstaff experiences its highest solar elevation angle around solar noon. This is the point when the sun reaches its highest point in the sky. The exact time of solar noon varies slightly throughout the year due to the Earth's elliptical orbit. You can find the precise solar noon time for your specific location using a solar calculator.

Azimuth Angle

The azimuth angle refers to the sun's compass direction. At solar noon in Flagstaff on June 20th, the sun's azimuth will be close to due south (180°). However, the azimuth angle changes continuously throughout the day, moving from east in the morning to west in the evening.

Solar Elevation Angle

The solar elevation angle is the angle of the sun above the horizon. This angle is crucial for solar panel positioning; higher elevation angles mean more direct sunlight. On June 20th, Flagstaff will have a high solar elevation angle at solar noon, meaning the sun is almost directly overhead. Again, the exact angle depends on the time of day and should be checked using a reliable solar calculator.

Impact on Solar Panel Placement

Understanding the solar angle on June 20th (and throughout the year) is vital for optimizing your solar panel system's efficiency. The optimal tilt angle for solar panels in Flagstaff will differ slightly throughout the year to accommodate the changes in solar elevation. A fixed-tilt system tilted towards the south (to maximize the solar noon angle) is generally a cost-effective solution, though the annual yield might be slightly improved with a tracking system.

Optimizing Your System

To maximize energy production, consider these factors:

Panel Orientation: Face your panels south. Slight east-west deviations won't drastically reduce energy production, but south is the best orientation.
Panel Tilt: A tilt angle slightly higher than Flagstaff's latitude will likely be most efficient.
Shading: Avoid shading from trees, buildings, or other obstructions. Even minor shading can dramatically impact energy production.

Data Sources and Tools

For precise solar angle calculations, utilize the following resources:

Online Solar Calculators: Many websites offer free solar calculators. Search for "solar position calculator" to find reliable options. Ensure the site uses accurate astronomical data.
Solar Energy Design Software: Professionals often use specialized software to model solar energy systems. These programs are more complex than simple calculators but offer advanced analysis.

This information will help you understand the solar angle in Flagstaff, Arizona on June 20th, 2025, and how to best utilize solar energy resources. Remember to consult with solar energy professionals for personalized advice tailored to your specific needs and location. Accurate data is crucial for a successful and efficient solar energy system.