See the chart below to see how different types of solar panel installations compare in Rock City.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Rock City, 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 Rock City. [1]
Rock City has an average monthly Global Horizontal Irradiance (GHI) of 3.83 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 2% greater than the average monthly Direct Normal Irradiance (DNI) of 3.76 kWh/m2/day. [1]
Solar installations in Rock City that are always titled at the latitude of Rock City (Average Tilt at Latitude or ATaL) average 4.42 kWh/m2/day, or about 15% greater than the average monthly GHI of 3.83 kWh/m2/day and approximately 18% greater than the average monthly DNI of 3.76 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 Rock City.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Rock City, IL has a average annual solar radiation value of 4.84 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Rock City is July with an average of 6.24 kWh/m2/day, followed by August at 6.01 kWh/m2/day and June at 5.96 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Rock City (Illinois) are December with an average of 2.88 kWh/m2/day, followed by January with an average of 3.33 kWh/m2/day and November at 3.53 kWh/m2/day. [1]
The average monthly solar radiation level in Rock City, IL, of 4.84 kilowatt hours per square meter per day (kWh/m2/day) is approximately 23% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 27% 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 Rock City 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 Rock City, IL at this current time.
Monthly AC solar system output averages for Rock City (il). Month-by-month solar power, as ranked by AC output, in Rock City. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Rock City (IL) has a average annual solar AC output value of 5575.54 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Rock City is July with an average of 578.73 kWhac, followed by August at 560.87 kWhac and June at 545.53 kWhac. [2]
The three months that historically average the lowest average solar output levels in Rock City (Illinois) are December with an average of 304.62 kWhac, followed by November with an average of 349.41 kWhac and January at 351.13 kWhac. [2]
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The village of Rock City, IL in Stephenson County has an approximate population of 315. [6]
To learn more about solar energy and solar power Rock City, IL, or for more solar-related resources for Rock City, visit the U.S. Energy Information Administration.
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