See the chart below to see how different types of solar panel installations compare in 21791.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical 21791 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 21791. [1]
The region associated with 21791 has an average monthly Global Horizontal Irradiance (GHI) of 4.06 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 2% greater than the average monthly Direct Normal Irradiance (DNI) of 3.97 kWh/m2/day. [1]
Solar installations in 21791 that are always titled at the latitude of Union Bridge (Average Tilt at Latitude or ATaL) average 4.72 kWh/m2/day, or about 16% greater than the average monthly GHI of 4.06 kWh/m2/day and approximately 19% greater than the average monthly DNI of 3.97 kWh/m2/day. [1]
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: 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: 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.
See the chart below for monthly solar radiation levels in 21791.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
The region associated with 21791 has a average annual solar radiation value of 5 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 21791 is July with an average of 5.95 kWh/m2/day, followed by June at 5.81 kWh/m2/day and August at 5.79 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 21791 are December with an average of 3.52 kWh/m2/day, followed by January with an average of 3.74 kWh/m2/day and November at 4.13 kWh/m2/day. [1]
The average monthly solar radiation level in 21791, of 5 kilowatt hours per square meter per day (kWh/m2/day) is approximately 27% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 24% 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).
Below is a month-by-month comparison of how average 21791 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 21791 at the current time.
Monthly AC solar system output averages for 21791. Month-by-month solar power, as ranked by AC output, in 21791. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
21791 has a average annual solar AC output value of 5695.96 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 21791 is July with an average of 550.23 kWhac, followed by May at 530.78 kWhac and August at 529.18 kWhac. [2]
The three months that historically average the lowest average solar output levels in 21791 are December with an average of 364.01 kWhac, followed by January with an average of 389.61 kWhac and November at 393.89 kWhac. [2]
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The ZIP code 21791 is associated with the city of Union Bridge in Carroll County in Maryland.
To learn more about solar energy and solar power in 21791, or for more solar-related resources for MD, check out the U.S. Energy Information Administration.
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