See the chart below to see how different types of solar panel installations compare in Douglas.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Douglas, AL data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Douglas. [1]
Douglas has an average monthly Global Horizontal Irradiance (GHI) of 4.42 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% greater than the average monthly Direct Normal Irradiance (DNI) of 4.28 kWh/m2/day. [1]
Solar installations in Douglas that are always titled at the latitude of Douglas (Average Tilt at Latitude or ATaL) average 4.98 kWh/m2/day, or about 13% greater than the average monthly GHI of 4.42 kWh/m2/day and approximately 16% greater than the average monthly DNI of 4.28 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 Douglas.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Douglas, AL has a average annual solar radiation value of 5.27 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Douglas is September with an average of 5.98 kWh/m2/day, followed by May at 5.83 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 Douglas (Alabama) are December with an average of 3.97 kWh/m2/day, followed by January with an average of 4.3 kWh/m2/day and February at 4.69 kWh/m2/day. [1]
The average monthly solar radiation level in Douglas, AL, of 5.27 kilowatt hours per square meter per day (kWh/m2/day) is approximately 34% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 20% 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 Douglas 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 currently have data on solar panel installations in the town of Douglas, AL at this current time.
Monthly AC solar system output averages for Douglas (al). Month-by-month solar power, as ranked by AC output, in Douglas. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Douglas (AL) has a average annual solar AC output value of 5696.39 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Douglas is May with an average of 527.56 kWhac, followed by September at 521.42 kWhac and April at 513.39 kWhac. [2]
The three months that historically average the lowest average solar output levels in Douglas (Alabama) are December with an average of 381.72 kWhac, followed by February with an average of 401.94 kWhac and January at 416.29 kWhac. [2]
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The town of Douglas, AL in Marshall County has an approximate population of 744. [6]
To learn more about solar energy and solar power Douglas, AL, or for more solar-related resources for Douglas, visit the U.S. Energy Information Administration.
Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.
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