Solar Energy & Solar Power Resources

Solar Power in 21740 (Hagerstown, MD)

Solar Energy in 21740

Sorry, historical solar radition values for 21740 are currently unavailable, please check back later.

Solar Panels in 21740

Solar panels in 21740 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 21740

The total length of the day in 21740 (Hagerstown, MD) today (September 22, 2026) will be 12 hours and 12 minutes. [More]

Solar Energy in 21740 (Hagerstown, MD)

Solar Energy Data for 21740

See the chart below to see how different types of solar panel installations compare in 21740.

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

Solar Energy Analysis for 21740

Sorry, it is not possible to complete our solar energy analysis for 21740 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 21740

Solar Radiation Data in 21740

See the chart below for monthly solar radiation levels in 21740.

Sorry, data is not currently available.

Solar Radiation Analysis for 21740

Sorry, it is not possible to complete our solar radiation analysis for 21740 at this time.

Historical solar radiation data for 21740 is not currently available.

Please check back later.

Solar Power Comparison: 21740 vs. the U.S.

Solar Power Levels in 21740

Sorry, solar radiation data for 21740 is not currently available.

Solar Power: 21740 vs. the U.S.

Below is a month-by-month comparison of how average 21740 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 21740

Sunrise / Sunset in 21740

Sunrise/Sunset for September 22, 2026 ^[2]
- Sunrise: 6:57 am
- Sunset: 7:09 pm
- Length of Day: 12:12

Best Months for Solar in 21740

Monthly data not currently available.

Solar Panel Installs in 21740

We do not have data on solar panel installations in ZIP Code 21740 at the current time.

Solar Power Output in 21740

The Power of Solar in 21740

Monthly AC solar system output averages for 21740. Month-by-month solar power, as ranked by AC output, in 21740. ^[2]

AC output data is not currently available.

Solar Output Analysis for 21740

Sorry, it is not possible to complete our solar radiation analysis for 21740 at this time.

Historical solar radiation data for 21740 is not currently available.

Please check back later.

Weather Forecast for 21740 ^[5]

Tue Sep 22

58°F

Heavy Intensity Rain
Min: 58°F
Max: 62°F

Gentle Breeze: 10 mps NE
Precip.: Chance of Rain
Humidity: 94%
Cloud cover: 100%

Wed Sep 23

60°F

Sky Is Clear
Min: 55°F
Max: 67°F

Gentle Breeze: 11 mps ENE
Precip.: n/a
Humidity: 61%
Cloud cover: 4%

Thu Sep 24

61°F

Scattered Clouds
Min: 50°F
Max: 63°F

Gentle Breeze: 9 mps NNE
Precip.: n/a
Humidity: 58%
Cloud cover: 47%

Fri Sep 25

67°F

Few Clouds
Min: 48°F
Max: 69°F

Gentle Breeze: 10 mps N
Precip.: n/a
Humidity: 43%
Cloud cover: 16%

Sat Sep 26

72°F

Overcast Clouds
Min: 53°F
Max: 72°F

Gentle Breeze: 12 mps N
Precip.: n/a
Humidity: 47%
Cloud cover: 96%

Sun Sep 27

73°F

Light Rain
Min: 57°F
Max: 73°F

Moderate breeze: 15 mps NNW
Precip.: Chance of Rain
Humidity: 48%
Cloud cover: 61%

More about 21740

About 21740

The ZIP code 21740 is associated with the city of Hagerstown in Washington County in Maryland.

21740 Solar Energy & Power

To learn more about solar energy and solar power in 21740, or for more solar-related resources for MD, check out the U.S. Energy Information Administration.