Solar Energy & Solar Power Resources

Solar Power in 91221 (Glendale, CA)

Solar Energy in 91221

Sorry, historical solar radition values for 91221 are currently unavailable, please check back later.

Solar Panels in 91221

Solar panels in 91221 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 91221

The total length of the day in 91221 (Glendale, CA) today (May 15, 2025) will be 14 hours and 0 minutes. [More]

Solar Energy in 91221 (Glendale, CA)

Solar Energy Data for 91221

See the chart below to see how different types of solar panel installations compare in 91221.

Historical solar power output data for Glendale is not currently available.

Solar Energy Analysis for 91221

Sorry, it is not possible to complete our solar energy analysis for 91221 at this time.

Please check back later.

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 91221

Solar Radiation Data in 91221

See the chart below for monthly solar radiation levels in 91221.

Sorry, data is not currently available.

Solar Radiation Analysis for 91221

Sorry, it is not possible to complete our solar radiation analysis for 91221 at this time.

Historical solar radiation data for 91221 is not currently available.

Please check back later.

Solar Power Comparison: 91221 vs. the U.S.

Solar Power Levels in 91221

Sorry, solar radiation data for 91221 is not currently available.

Solar Power: 91221 vs. the U.S.

Below is a month-by-month comparison of how average 91221 solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). ^[1]

Sorry, solar radiation data for California is not currently available.

Solar Data & Statistics for 91221

Sunrise / Sunset in 91221

Sunrise/Sunset for May 15, 2025 ^[2]
- Sunrise: 5:49 am
- Sunset: 7:49 pm
- Length of Day: 14:0

Best Months for Solar in 91221

Monthly data not currently available.

Solar Panel Installs in 91221

We do not have data on solar panel installations in ZIP Code 91221 at the current time.

Solar Power Output in 91221

The Power of Solar in 91221

Monthly AC solar system output averages for 91221. Month-by-month solar power, as ranked by AC output, in 91221. ^[2]

AC output data is not currently available.

Solar Output Analysis for 91221

Sorry, it is not possible to complete our solar radiation analysis for 91221 at this time.

Historical solar radiation data for 91221 is not currently available.

Please check back later.

Weather Forecast for 91221 ^[5]

Thu May 15

68°F

Sky Is Clear
Min: 55°F
Max: 77°F

Gentle Breeze: 9 mps SSW
Precip.: n/a
Humidity: 56%
Cloud cover: 4%

Fri May 16

73°F

Overcast Clouds
Min: 60°F
Max: 74°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 44%
Cloud cover: 100%

Sat May 17

63°F

Overcast Clouds
Min: 58°F
Max: 65°F

Gentle Breeze: 11 mps ESE
Precip.: n/a
Humidity: 63%
Cloud cover: 100%

Sun May 18

67°F

Scattered Clouds
Min: 55°F
Max: 72°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 45%
Cloud cover: 30%

Mon May 19

74°F

Sky Is Clear
Min: 59°F
Max: 76°F

Gentle Breeze: 9 mps WSW
Precip.: n/a
Humidity: 31%
Cloud cover: 0%

Tue May 20

82°F

Sky Is Clear
Min: 66°F
Max: 85°F

Gentle Breeze: 11 mps SW
Precip.: n/a
Humidity: 18%
Cloud cover: 0%

More about 91221

About 91221

The ZIP code 91221 is associated with the city of Glendale in Los Angeles County in California.

91221 Solar Energy & Power

To learn more about solar energy and solar power in 91221, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.