The month of August has the highest historical solar radition values in 91741 with an average of 7.29 kWh/m2/day. [More]
Solar Panels in 91741
Solar panels in 91741 that are tilted toward the equator at an angle equal to the current latitude will produce the maximum solar energy output. [More]
Sunrise & Sunset in 91741
The total length of the day in 91741 (Glendora, CA) today (May 08, 2025) will be 13 hours and 49 minutes. [More]
Solar Energy in 91741 (Glendora, CA)
Solar Energy Data for 91741
See the chart below to see how different types of solar panel installations compare in 91741.
Based on historical 91741 data, solar panels that are tilted toward the equator at an angle equal to the current latitude will produce the maximum solar energy output in 91741.[1]
The region associated with 91741 has an average monthly Global Horizontal Irradiance (GHI) of 5.26 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 12% less than the average monthly Direct Normal Irradiance (DNI) of 6.01 kWh/m2/day. [1]
Solar installations in 91741 that are always titled at the latitude of Glendora (Average Tilt at Latitude or ATaL) average 6.01 kWh/m2/day, or about 14% greater than the average monthly GHI of 5.26 kWh/m2/day and approximately equal to the average monthly DNI of 6.01 kWh/m2/day. [1]
Solar Energy Glossary
Global Horizontal Irradiance (GHI)
Global Horizontal Irradiance: The total amount of solar radiation that is received per unit area by a surface that is always positioned in a horizontal manner.
Direct Normal Irradiance (DNI)
Direct Normal Irradiance: The total amount of solar radiation received per unit area by a surface that is always perpendicular to the sun rays that come in a straight line from the direction of the sun at its current position in the sky.
Average Tilt at Latitude (ATaL)
Average Tilt at Latitude: The total amount of solar radiation received per unit area by a surface that is tilted toward the equator at an angle equal to the current latitude. ATaL will often produce the optimum energy output.
Solar Radiation Levels in 91741
Solar Radiation Data in 91741
See the chart below for monthly solar radiation levels in 91741.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for 91741
The region associated with 91741 has a average annual solar radiation value of 6.21 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 91741 is August with an average of 7.29 kWh/m2/day, followed by September at 7.15 kWh/m2/day and July at 6.92 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 91741 are December with an average of 5.01 kWh/m2/day, followed by January with an average of 5.37 kWh/m2/day and February at 5.4 kWh/m2/day. [1]
Solar Power Comparison: 91741 vs. the U.S.
Solar Power Levels in 91741
The average monthly solar radiation level in 91741, of 6.21 kilowatt hours per square meter per day (kWh/m2/day) is approximately 58% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 6% less than the average level of 6.61 kWh/m2/day in a city with historically high levels (NV). [1]
→ Values listed as 0 (zero) are not available (N/A).
Solar Power: 91741 vs. the U.S.
Below is a month-by-month comparison of how average 91741 solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). [1]
→ k/m/d = kWh/m2/day = kilowatt hours per square meter per day.
→ Values listed as 0 (zero) are not available (N/A).
We do not have data on solar panel installations in ZIP Code 91741 at the current time.
Solar Power Output in 91741
The Power of Solar in 91741
Monthly AC solar system output averages for 91741. Month-by-month solar power, as ranked by AC output, in 91741. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for 91741
91741 has a average annual solar AC output value of 6797.93 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 91741 is August with an average of 655.46 kWhac, followed by July at 627.74 kWhac and September at 624.39 kWhac. [2]
The three months that historically average the lowest average solar output levels in 91741 are February with an average of 466.91 kWhac, followed by December with an average of 487.41 kWhac and January at 508.37 kWhac. [2]
Gentle Breeze: 8 mps S
Precip.: Chance of Rain
Humidity: 77%
Cloud cover: 100%
More about 91741
About 91741
The ZIP code 91741 is associated with the city of Glendora in Los Angeles County in California.
91741 Solar Energy & Power
To learn more about solar energy and solar power in 91741, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.
Did you know?
The largest solar power plant in the world covers 1000 acres & is located in the Mojave Desert in California.