Based on historical Willowbrook, IL data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Willowbrook.[1]
Willowbrook has an average monthly Global Horizontal Irradiance (GHI) of 3.9 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% greater than the average monthly Direct Normal Irradiance (DNI) of 3.77 kWh/m2/day. [1]
Solar installations in Willowbrook that are always titled at the latitude of Willowbrook (Average Tilt at Latitude or ATaL) average 4.52 kWh/m2/day, or about 16% greater than the average monthly GHI of 3.9 kWh/m2/day and approximately 20% greater than the average monthly DNI of 3.77 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 Willowbrook
Solar Radiation Data in Willowbrook, IL
See the chart below for monthly solar radiation levels in Willowbrook.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Willowbrook, IL
Willowbrook, IL has a average annual solar radiation value of 4.77 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Willowbrook is July with an average of 6.05 kWh/m2/day, followed by June at 5.82 kWh/m2/day and September at 5.7 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Willowbrook (Illinois) are December with an average of 2.9 kWh/m2/day, followed by January with an average of 3.34 kWh/m2/day and November at 3.49 kWh/m2/day. [1]
Solar Power Comparison: Willowbrook vs. the U.S.
Solar Power Levels in Willowbrook
The average monthly solar radiation level in Willowbrook, IL, of 4.77 kilowatt hours per square meter per day (kWh/m2/day) is approximately 21% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 28% 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: Willowbrook vs. the U.S.
Below is a month-by-month comparison of how average Willowbrook 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 village of Willowbrook, IL at this current time.
Solar Power Output in Willowbrook
The Power of Solar in Willowbrook, IL
Monthly AC solar system output averages for Willowbrook (il). Month-by-month solar power, as ranked by AC output, in Willowbrook. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Willowbrook, IL
Willowbrook (IL) has a average annual solar AC output value of 5514.29 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Willowbrook is July with an average of 562.71 kWhac, followed by June at 532.71 kWhac and August at 531.59 kWhac. [2]
The three months that historically average the lowest average solar output levels in Willowbrook (Illinois) are December with an average of 304.05 kWhac, followed by November with an average of 348 kWhac and January at 352.44 kWhac. [2]
Cost of Utilities in Willowbrook
Willowbrook Electricity Costs
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Solar Power Poll: Willowbrook
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Willowbrook Natural Gas Costs
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Light breeze: 6 mps SE
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Thu Dec 26
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Light breeze: 5 mps SE
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More about Willowbrook
About Willowbrook
The village of Willowbrook, IL in DuPage County has an approximate population of 8,540. [6]
Willowbrook, IL Solar Energy
To learn more about solar energy and solar power Willowbrook, IL, or for more solar-related resources for Willowbrook, visit the U.S. Energy Information Administration.
Did you know?
Various missions to space by different countries are known to utilize solar energy as a main power source.
