Based on historical Girard, 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 Girard.[1]
Girard has an average monthly Global Horizontal Irradiance (GHI) of 4.16 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% less than the average monthly Direct Normal Irradiance (DNI) of 4.27 kWh/m2/day. [1]
Solar installations in Girard that are always titled at the latitude of Girard (Average Tilt at Latitude or ATaL) average 4.81 kWh/m2/day, or about 16% greater than the average monthly GHI of 4.16 kWh/m2/day and approximately 13% greater than the average monthly DNI of 4.27 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 Girard
Solar Radiation Data in Girard, IL
See the chart below for monthly solar radiation levels in Girard.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Girard, IL
Girard, IL has a average annual solar radiation value of 5.06 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Girard is July with an average of 6.32 kWh/m2/day, followed by August at 6.16 kWh/m2/day and September at 5.91 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Girard (Illinois) are December with an average of 3.23 kWh/m2/day, followed by January with an average of 3.74 kWh/m2/day and November at 4.17 kWh/m2/day. [1]
Solar Power Comparison: Girard vs. the U.S.
Solar Power Levels in Girard
The average monthly solar radiation level in Girard, IL, of 5.06 kilowatt hours per square meter per day (kWh/m2/day) is approximately 29% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 23% 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: Girard vs. the U.S.
Below is a month-by-month comparison of how average Girard 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 Girard, IL at this current time.
Solar Power Output in Girard
The Power of Solar in Girard, IL
Monthly AC solar system output averages for Girard (il). Month-by-month solar power, as ranked by AC output, in Girard. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Girard, IL
Girard (IL) has a average annual solar AC output value of 5749.86 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Girard is July with an average of 575.01 kWhac, followed by August at 566.87 kWhac and September at 537.67 kWhac. [2]
The three months that historically average the lowest average solar output levels in Girard (Illinois) are December with an average of 335.49 kWhac, followed by January with an average of 388.06 kWhac and February at 396.43 kWhac. [2]
Cost of Utilities in Girard
Girard Electricity Costs
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Solar Power Poll: Girard
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Girard Natural Gas Costs
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Gentle Breeze: 11 mps SE
Precip.: Chance of Rain
Humidity: 92%
Cloud cover: 100%
Wed Dec 25
45°F
Moderate Rain
Min: 44°F
Max: 46°F
Gentle Breeze: 11 mps SE
Precip.: Chance of Rain
Humidity: 96%
Cloud cover: 100%
Thu Dec 26
50°F
Light Rain
Min: 47°F
Max: 51°F
Fresh Breeze: 20 mps SE
Precip.: Chance of Rain
Humidity: 97%
Cloud cover: 100%
More about Girard
About Girard
The city of Girard, IL in Macoupin County has an approximate population of 2,103. [6]
Girard, IL Solar Energy
To learn more about solar energy and solar power Girard, IL, or for more solar-related resources for Girard, 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.