See the chart below to see how different types of solar panel installations compare in Roseburg.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Roseburg, OR data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Roseburg. [1]
Roseburg has an average monthly Global Horizontal Irradiance (GHI) of 4.04 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 7% less than the average monthly Direct Normal Irradiance (DNI) of 4.33 kWh/m2/day. [1]
Solar installations in Roseburg that are always titled at the latitude of Roseburg (Average Tilt at Latitude or ATaL) average 4.58 kWh/m2/day, or about 13% greater than the average monthly GHI of 4.04 kWh/m2/day and approximately 6% greater than the average monthly DNI of 4.33 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 Roseburg.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Roseburg, OR has a average annual solar radiation value of 4.48 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Roseburg is August with an average of 6.73 kWh/m2/day, followed by July at 6.7 kWh/m2/day and September at 5.99 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Roseburg (Oregon) are December with an average of 1.94 kWh/m2/day, followed by November with an average of 2.29 kWh/m2/day and January at 2.38 kWh/m2/day. [1]
The average monthly solar radiation level in Roseburg, OR, of 4.48 kilowatt hours per square meter per day (kWh/m2/day) is approximately 14% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 32% 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 Roseburg 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 city of Roseburg, OR at this current time.
Monthly AC solar system output averages for Roseburg (or). Month-by-month solar power, as ranked by AC output, in Roseburg. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Roseburg (OR) has a average annual solar AC output value of 4927.05 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Roseburg is August with an average of 600.77 kWhac, followed by July at 599.95 kWhac and June at 533.08 kWhac. [2]
The three months that historically average the lowest average solar output levels in Roseburg (Oregon) are December with an average of 194.29 kWhac, followed by November with an average of 218.88 kWhac and January at 236.7 kWhac. [2]
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The city of Roseburg, OR in Douglas County has an approximate population of 21,181. [6]
To learn more about solar energy and solar power Roseburg, OR, or for more solar-related resources for Roseburg, visit the U.S. Energy Information Administration.
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