Solar Energy & Solar Power Resources

Solar Power in 21139 (Riderwood, MD)

Solar Energy in 21139

Sorry, historical solar radition values for 21139 are currently unavailable, please check back later.

Solar Panels in 21139

Solar panels in 21139 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 21139

The total length of the day in 21139 (Riderwood, MD) today (October 26, 2026) will be 10 hours and 44 minutes. [More]

Solar Energy in 21139 (Riderwood, MD)

Solar Energy Data for 21139

See the chart below to see how different types of solar panel installations compare in 21139.

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

Solar Energy Analysis for 21139

Sorry, it is not possible to complete our solar energy analysis for 21139 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 21139

Solar Radiation Data in 21139

See the chart below for monthly solar radiation levels in 21139.

Sorry, data is not currently available.

Solar Radiation Analysis for 21139

Sorry, it is not possible to complete our solar radiation analysis for 21139 at this time.

Historical solar radiation data for 21139 is not currently available.

Please check back later.

Solar Power Comparison: 21139 vs. the U.S.

Solar Power Levels in 21139

Sorry, solar radiation data for 21139 is not currently available.

Solar Power: 21139 vs. the U.S.

Below is a month-by-month comparison of how average 21139 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 21139

Sunrise / Sunset in 21139

Sunrise/Sunset for October 26, 2026 ^[2]
- Sunrise: 7:28 am
- Sunset: 6:12 pm
- Length of Day: 10:44

Best Months for Solar in 21139

Monthly data not currently available.

Solar Panel Installs in 21139

We do not have data on solar panel installations in ZIP Code 21139 at the current time.

Solar Power Output in 21139

The Power of Solar in 21139

Monthly AC solar system output averages for 21139. Month-by-month solar power, as ranked by AC output, in 21139. ^[2]

AC output data is not currently available.

Solar Output Analysis for 21139

Sorry, it is not possible to complete our solar radiation analysis for 21139 at this time.

Historical solar radiation data for 21139 is not currently available.

Please check back later.

Weather Forecast for 21139 ^[5]

Mon Oct 26

67°F

Sky Is Clear
Min: 41°F
Max: 71°F

Light breeze: 7 mps NW
Precip.: n/a
Humidity: 48%
Cloud cover: 0%

Tue Oct 27

65°F

Sky Is Clear
Min: 47°F
Max: 69°F

Gentle Breeze: 8 mps N
Precip.: n/a
Humidity: 52%
Cloud cover: 0%

Wed Oct 28

61°F

Few Clouds
Min: 47°F
Max: 64°F

Light breeze: 6 mps SE
Precip.: n/a
Humidity: 54%
Cloud cover: 23%

Thu Oct 29

61°F

Overcast Clouds
Min: 50°F
Max: 67°F

Light breeze: 7 mps SW
Precip.: n/a
Humidity: 82%
Cloud cover: 100%

Fri Oct 30

70°F

Sky Is Clear
Min: 52°F
Max: 75°F

Light breeze: 7 mps NNW
Precip.: n/a
Humidity: 52%
Cloud cover: 0%

Sat Oct 31

64°F

Broken Clouds
Min: 51°F
Max: 69°F

Light breeze: 6 mps N
Precip.: n/a
Humidity: 62%
Cloud cover: 77%

More about 21139

About 21139

The ZIP code 21139 is associated with the city of Riderwood in Baltimore County in Maryland.

21139 Solar Energy & Power

To learn more about solar energy and solar power in 21139, or for more solar-related resources for MD, check out the U.S. Energy Information Administration.