See the chart below to see how different types of solar panel installations compare in Darby.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Darby, PA data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Darby. [1]
Darby has an average monthly Global Horizontal Irradiance (GHI) of 4.05 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 0% greater than the average monthly Direct Normal Irradiance (DNI) of 4.04 kWh/m2/day. [1]
Solar installations in Darby that are always titled at the latitude of Darby (Average Tilt at Latitude or ATaL) average 4.76 kWh/m2/day, or about 18% greater than the average monthly GHI of 4.05 kWh/m2/day and approximately 18% greater than the average monthly DNI of 4.04 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 Darby.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Darby, PA has a average annual solar radiation value of 4.93 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Darby is July with an average of 5.89 kWh/m2/day, followed by August at 5.71 kWh/m2/day and April at 5.52 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Darby (Pennsylvania) are December with an average of 3.33 kWh/m2/day, followed by January with an average of 3.6 kWh/m2/day and November at 4.05 kWh/m2/day. [1]
The average monthly solar radiation level in Darby, PA, of 4.93 kilowatt hours per square meter per day (kWh/m2/day) is approximately 25% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 25% 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 Darby 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 borough of Darby, PA at this current time.
Monthly AC solar system output averages for Darby (pa). Month-by-month solar power, as ranked by AC output, in Darby. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Darby (PA) has a average annual solar AC output value of 5580.93 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Darby is July with an average of 543.31 kWhac, followed by August at 520.56 kWhac and May at 517.95 kWhac. [2]
The three months that historically average the lowest average solar output levels in Darby (Pennsylvania) are December with an average of 339.52 kWhac, followed by January with an average of 373.25 kWhac and November at 384.95 kWhac. [2]
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Vote now: Given all of the data and analysis provided for Darby, is solar power a good choice for residents of this borough?
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The borough of Darby, PA in Delaware County has an approximate population of 10,687. [6]
To learn more about solar energy and solar power Darby, PA, or for more solar-related resources for Darby, visit the U.S. Energy Information Administration.
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