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]
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 Roseburg
Solar Radiation Data in Roseburg, OR
See the chart below for monthly solar radiation levels in Roseburg.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Roseburg, OR
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]
Solar Power Comparison: Roseburg vs. the U.S.
Solar Power Levels in Roseburg
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).
Solar Power: Roseburg vs. the U.S.
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.
Solar Power Output in Roseburg
The Power of Solar in Roseburg, OR
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))
Solar Output Analysis for Roseburg, OR
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]
Cost of Utilities in Roseburg
Roseburg Electricity Costs
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Solar Power Poll: Roseburg
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Roseburg Natural Gas Costs
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Light breeze: 6 mps W
Precip.: Chance of Rain
Humidity: 84%
Cloud cover: 100%
Wed Dec 25
44°F
Moderate Rain
Min: 37°F
Max: 44°F
Gentle Breeze: 8 mps SE
Precip.: Chance of Rain
Humidity: 86%
Cloud cover: 100%
Thu Dec 26
44°F
Moderate Rain
Min: 41°F
Max: 48°F
Moderate breeze: 13 mps W
Precip.: Chance of Rain
Humidity: 95%
Cloud cover: 100%
More about Roseburg
About Roseburg
The city of Roseburg, OR in Douglas County has an approximate population of 21,181. [6]
Roseburg, OR Solar Energy
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.
Did you know?
Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.