Solar Energy & Solar Power Resources

Solar Power in 21640 (Henderson, MD)

Solar Energy in 21640

Sorry, historical solar radition values for 21640 are currently unavailable, please check back later.

Solar Panels in 21640

Solar panels in 21640 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 21640

The total length of the day in 21640 (Henderson, MD) today (October 01, 2026) will be 11 hours and 49 minutes. [More]

Solar Energy in 21640 (Henderson, MD)

Solar Energy Data for 21640

See the chart below to see how different types of solar panel installations compare in 21640.

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

Solar Energy Analysis for 21640

Sorry, it is not possible to complete our solar energy analysis for 21640 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 21640

Solar Radiation Data in 21640

See the chart below for monthly solar radiation levels in 21640.

Sorry, data is not currently available.

Solar Radiation Analysis for 21640

Sorry, it is not possible to complete our solar radiation analysis for 21640 at this time.

Historical solar radiation data for 21640 is not currently available.

Please check back later.

Solar Power Comparison: 21640 vs. the U.S.

Solar Power Levels in 21640

Sorry, solar radiation data for 21640 is not currently available.

Solar Power: 21640 vs. the U.S.

Below is a month-by-month comparison of how average 21640 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 21640

Sunrise / Sunset in 21640

Sunrise/Sunset for October 01, 2026 ^[2]
- Sunrise: 6:58 am
- Sunset: 6:47 pm
- Length of Day: 11:49

Best Months for Solar in 21640

Monthly data not currently available.

Solar Panel Installs in 21640

We do not have data on solar panel installations in ZIP Code 21640 at the current time.

Solar Power Output in 21640

The Power of Solar in 21640

Monthly AC solar system output averages for 21640. Month-by-month solar power, as ranked by AC output, in 21640. ^[2]

AC output data is not currently available.

Solar Output Analysis for 21640

Sorry, it is not possible to complete our solar radiation analysis for 21640 at this time.

Historical solar radiation data for 21640 is not currently available.

Please check back later.

Weather Forecast for 21640 ^[5]

Thu Oct 1

74°F

Broken Clouds
Min: 63°F
Max: 83°F

Gentle Breeze: 9 mps SSW
Precip.: n/a
Humidity: 78%
Cloud cover: 83%

Fri Oct 2

81°F

Light Rain
Min: 65°F
Max: 86°F

Gentle Breeze: 10 mps SSW
Precip.: Chance of Rain
Humidity: 65%
Cloud cover: 29%

Sat Oct 3

65°F

Moderate Rain
Min: 59°F
Max: 69°F

Moderate breeze: 13 mps NNE
Precip.: Chance of Rain
Humidity: 73%
Cloud cover: 100%

Sun Oct 4

63°F

Moderate Rain
Min: 60°F
Max: 65°F

Gentle Breeze: 10 mps ENE
Precip.: Chance of Rain
Humidity: 96%
Cloud cover: 100%

Mon Oct 5

65°F

Sky Is Clear
Min: 55°F
Max: 68°F

Gentle Breeze: 11 mps NW
Precip.: n/a
Humidity: 69%
Cloud cover: 0%

Tue Oct 6

57°F

Sky Is Clear
Min: 49°F
Max: 61°F

Gentle Breeze: 9 mps N
Precip.: n/a
Humidity: 53%
Cloud cover: 0%

More about 21640

About 21640

The ZIP code 21640 is associated with the city of Henderson in Caroline County in Maryland.

21640 Solar Energy & Power

To learn more about solar energy and solar power in 21640, or for more solar-related resources for MD, check out the U.S. Energy Information Administration.