Solar Energy & Solar Power Resources

Solar Power in 21664 (Secretary, MD)

Solar Energy in 21664

Sorry, historical solar radition values for 21664 are currently unavailable, please check back later.

Solar Panels in 21664

Solar panels in 21664 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 21664

The total length of the day in 21664 (Secretary, MD) today (August 06, 2026) will be 14 hours and 2 minutes. [More]

Solar Energy in 21664 (Secretary, MD)

Solar Energy Data for 21664

See the chart below to see how different types of solar panel installations compare in 21664.

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

Solar Energy Analysis for 21664

Sorry, it is not possible to complete our solar energy analysis for 21664 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 21664

Solar Radiation Data in 21664

See the chart below for monthly solar radiation levels in 21664.

Sorry, data is not currently available.

Solar Radiation Analysis for 21664

Sorry, it is not possible to complete our solar radiation analysis for 21664 at this time.

Historical solar radiation data for 21664 is not currently available.

Please check back later.

Solar Power Comparison: 21664 vs. the U.S.

Solar Power Levels in 21664

Sorry, solar radiation data for 21664 is not currently available.

Solar Power: 21664 vs. the U.S.

Below is a month-by-month comparison of how average 21664 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 21664

Sunrise / Sunset in 21664

Sunrise/Sunset for August 06, 2026 ^[2]
- Sunrise: 6:08 am
- Sunset: 8:10 pm
- Length of Day: 14:2

Best Months for Solar in 21664

Monthly data not currently available.

Solar Panel Installs in 21664

We do not have data on solar panel installations in ZIP Code 21664 at the current time.

Solar Power Output in 21664

The Power of Solar in 21664

Monthly AC solar system output averages for 21664. Month-by-month solar power, as ranked by AC output, in 21664. ^[2]

AC output data is not currently available.

Solar Output Analysis for 21664

Sorry, it is not possible to complete our solar radiation analysis for 21664 at this time.

Historical solar radiation data for 21664 is not currently available.

Please check back later.

Weather Forecast for 21664 ^[5]

Thu Aug 6

87°F

Sky Is Clear
Min: 76°F
Max: 93°F

Moderate breeze: 13 mps SW
Precip.: n/a
Humidity: 62%
Cloud cover: 0%

Fri Aug 7

94°F

Heavy Intensity Rain
Min: 74°F
Max: 96°F

Moderate breeze: 16 mps S
Precip.: Chance of Rain
Humidity: 46%
Cloud cover: 6%

Sat Aug 8

91°F

Moderate Rain
Min: 70°F
Max: 95°F

Fresh Breeze: 19 mps NNW
Precip.: Chance of Rain
Humidity: 50%
Cloud cover: 26%

Sun Aug 9

92°F

Light Rain
Min: 69°F
Max: 93°F

Gentle Breeze: 8 mps WNW
Precip.: Chance of Rain
Humidity: 46%
Cloud cover: 28%

Mon Aug 10

95°F

Sky Is Clear
Min: 74°F
Max: 96°F

Gentle Breeze: 9 mps SW
Precip.: n/a
Humidity: 43%
Cloud cover: 0%

Tue Aug 11

93°F

Scattered Clouds
Min: 73°F
Max: 93°F

Gentle Breeze: 10 mps NNW
Precip.: n/a
Humidity: 44%
Cloud cover: 50%

More about 21664

About 21664

The ZIP code 21664 is associated with the city of Secretary in Dorchester County in Maryland.

21664 Solar Energy & Power

To learn more about solar energy and solar power in 21664, or for more solar-related resources for MD, check out the U.S. Energy Information Administration.