Based on historical Rock Island, 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 Island.[1]
Rock Island has an average monthly Global Horizontal Irradiance (GHI) of 3.98 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 2% less than the average monthly Direct Normal Irradiance (DNI) of 4.07 kWh/m2/day. [1]
Solar installations in Rock Island that are always titled at the latitude of Rock Island (Average Tilt at Latitude or ATaL) average 4.64 kWh/m2/day, or about 17% greater than the average monthly GHI of 3.98 kWh/m2/day and approximately 14% greater than the average monthly DNI of 4.07 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 Rock Island
Solar Radiation Data in Rock Island, IL
See the chart below for monthly solar radiation levels in Rock Island.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Rock Island, IL
Rock Island, IL has a average annual solar radiation value of 4.88 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Rock Island is July with an average of 6.08 kWh/m2/day, followed by September at 5.84 kWh/m2/day and August at 5.8 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Rock Island (Illinois) are December with an average of 3.06 kWh/m2/day, followed by January with an average of 3.56 kWh/m2/day and November at 3.64 kWh/m2/day. [1]
Solar Power Comparison: Rock Island vs. the U.S.
Solar Power Levels in Rock Island
The average monthly solar radiation level in Rock Island, IL, of 4.88 kilowatt hours per square meter per day (kWh/m2/day) is approximately 24% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 26% 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: Rock Island vs. the U.S.
Below is a month-by-month comparison of how average Rock Island 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 Rock Island, IL at this current time.
Solar Power Output in Rock Island
The Power of Solar in Rock Island, IL
Monthly AC solar system output averages for Rock Island (il). Month-by-month solar power, as ranked by AC output, in Rock Island. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Rock Island, IL
Rock Island (IL) has a average annual solar AC output value of 5585.37 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Rock Island is July with an average of 566.59 kWhac, followed by August at 539.68 kWhac and September at 532.93 kWhac. [2]
The three months that historically average the lowest average solar output levels in Rock Island (Illinois) are December with an average of 317.21 kWhac, followed by November with an average of 352.22 kWhac and January at 373.61 kWhac. [2]
Cost of Utilities in Rock Island
Rock Island Electricity Costs
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Solar Power Poll: Rock Island
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Rock Island Natural Gas Costs
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Gentle Breeze: 9 mps E
Precip.: Chance of Rain
Humidity: 77%
Cloud cover: 100%
Wed Dec 25
40°F
Moderate Rain
Min: 36°F
Max: 41°F
Gentle Breeze: 9 mps ENE
Precip.: Chance of Rain
Humidity: 99%
Cloud cover: 100%
Thu Dec 26
47°F
Light Rain
Min: 42°F
Max: 48°F
Gentle Breeze: 10 mps ESE
Precip.: Chance of Rain
Humidity: 93%
Cloud cover: 100%
More about Rock Island
About Rock Island
The city of Rock Island, IL in Rock Island County has an approximate population of 39,018. [6]
Rock Island, IL Solar Energy
To learn more about solar energy and solar power Rock Island, IL, or for more solar-related resources for Rock Island, visit the U.S. Energy Information Administration.
Did you know?
The solar energy that strikes the Earth in one hour could provide all of the Earth's energy needs for a complete year.
