Based on historical 21609 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 21609.[1]
The region associated with 21609 has an average monthly Global Horizontal Irradiance (GHI) of 4.19 kilowatt hours per square meter per day (kWh/m2/day), which is approximately equal to the average monthly Direct Normal Irradiance (DNI) of 4.19 kWh/m2/day. [1]
Solar installations in 21609 that are always titled at the latitude of Bethlehem (Average Tilt at Latitude or ATaL) average 4.89 kWh/m2/day, or about 17% greater than the average monthly GHI of 4.19 kWh/m2/day and approximately 17% greater than the average monthly DNI of 4.19 kWh/m2/day. [1]
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 21609
Solar Radiation Data in 21609
See the chart below for monthly solar radiation levels in 21609.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for 21609
The region associated with 21609 has a average annual solar radiation value of 5.14 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 21609 is July with an average of 6.02 kWh/m2/day, followed by April at 5.88 kWh/m2/day and June at 5.82 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 21609 are December with an average of 3.52 kWh/m2/day, followed by January with an average of 4.02 kWh/m2/day and November at 4.43 kWh/m2/day. [1]
Solar Power Comparison: 21609 vs. the U.S.
Solar Power Levels in 21609
The average monthly solar radiation level in 21609, of 5.14 kilowatt hours per square meter per day (kWh/m2/day) is approximately 31% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 22% less than the average level of 6.61 kWh/m2/day in a city with historically high levels (NV). [1]
→ Values listed as 0 (zero) are not available (N/A).
Solar Power: 21609 vs. the U.S.
Below is a month-by-month comparison of how average 21609 solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). [1]
→ k/m/d = kWh/m2/day = kilowatt hours per square meter per day.
→ Values listed as 0 (zero) are not available (N/A).
We do not have data on solar panel installations in ZIP Code 21609 at the current time.
Solar Power Output in 21609
The Power of Solar in 21609
Monthly AC solar system output averages for 21609. Month-by-month solar power, as ranked by AC output, in 21609. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for 21609
21609 has a average annual solar AC output value of 5829.7 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 21609 is July with an average of 555.93 kWhac, followed by April at 549.93 kWhac and August at 536.28 kWhac. [2]
The three months that historically average the lowest average solar output levels in 21609 are December with an average of 359.91 kWhac, followed by January with an average of 418.32 kWhac and November at 419.79 kWhac. [2]
Gentle Breeze: 9 mps ESE
Precip.: Chance of Rain
Humidity: 56%
Cloud cover: 20%
Sun Sep 22
70°F
Light Rain
Min: 62°F
Max: 70°F
Gentle Breeze: 10 mps E
Precip.: Chance of Rain
Humidity: 67%
Cloud cover: 100%
More about 21609
About 21609
The ZIP code 21609 is associated with the city of Bethlehem in Caroline County in Maryland.
21609 Solar Energy & Power
To learn more about solar energy and solar power in 21609, or for more solar-related resources for MD, check out the U.S. Energy Information Administration.
Did you know?
Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.