Solar Energy & Solar Power Resources

Solar Power in 21738 (Glenwood, MD)

Solar Energy in 21738

Sorry, historical solar radition values for 21738 are currently unavailable, please check back later.

Solar Panels in 21738

Solar panels in 21738 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 21738

The total length of the day in 21738 (Glenwood, MD) today (September 19, 2026) will be 12 hours and 20 minutes. [More]

Solar Energy in 21738 (Glenwood, MD)

Solar Energy Data for 21738

See the chart below to see how different types of solar panel installations compare in 21738.

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

Solar Energy Analysis for 21738

Sorry, it is not possible to complete our solar energy analysis for 21738 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 21738

Solar Radiation Data in 21738

See the chart below for monthly solar radiation levels in 21738.

Sorry, data is not currently available.

Solar Radiation Analysis for 21738

Sorry, it is not possible to complete our solar radiation analysis for 21738 at this time.

Historical solar radiation data for 21738 is not currently available.

Please check back later.

Solar Power Comparison: 21738 vs. the U.S.

Solar Power Levels in 21738

Sorry, solar radiation data for 21738 is not currently available.

Solar Power: 21738 vs. the U.S.

Below is a month-by-month comparison of how average 21738 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 Maryland is not currently available.

Solar Data & Statistics for 21738

Sunrise / Sunset in 21738

Sunrise/Sunset for September 19, 2026 ^[2]
- Sunrise: 6:51 am
- Sunset: 7:11 pm
- Length of Day: 12:20

Best Months for Solar in 21738

Monthly data not currently available.

Solar Panel Installs in 21738

We do not have data on solar panel installations in ZIP Code 21738 at the current time.

Solar Power Output in 21738

The Power of Solar in 21738

Monthly AC solar system output averages for 21738. Month-by-month solar power, as ranked by AC output, in 21738. ^[2]

AC output data is not currently available.

Solar Output Analysis for 21738

Sorry, it is not possible to complete our solar radiation analysis for 21738 at this time.

Historical solar radiation data for 21738 is not currently available.

Please check back later.

Weather Forecast for 21738 ^[5]

Sat Sep 19

73°F

Broken Clouds
Min: 62°F
Max: 77°F

Gentle Breeze: 11 mps SE
Precip.: n/a
Humidity: 53%
Cloud cover: 83%

Sun Sep 20

83°F

Moderate Rain
Min: 69°F
Max: 83°F

Moderate breeze: 15 mps SSW
Precip.: Chance of Rain
Humidity: 50%
Cloud cover: 75%

Mon Sep 21

70°F

Light Rain
Min: 58°F
Max: 73°F

Gentle Breeze: 12 mps N
Precip.: Chance of Rain
Humidity: 50%
Cloud cover: 70%

Tue Sep 22

60°F

Moderate Rain
Min: 56°F
Max: 65°F

Gentle Breeze: 12 mps ENE
Precip.: Chance of Rain
Humidity: 93%
Cloud cover: 100%

Wed Sep 23

64°F

Light Rain
Min: 54°F
Max: 64°F

Moderate breeze: 15 mps E
Precip.: Chance of Rain
Humidity: 61%
Cloud cover: 100%

Thu Sep 24

66°F

Overcast Clouds
Min: 55°F
Max: 66°F

Moderate breeze: 13 mps ENE
Precip.: n/a
Humidity: 63%
Cloud cover: 100%

More about 21738

About 21738

The ZIP code 21738 is associated with the city of Glenwood in Howard County in Maryland.

21738 Solar Energy & Power

To learn more about solar energy and solar power in 21738, or for more solar-related resources for MD, check out the U.S. Energy Information Administration.