Based on historical Quincy, 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 Quincy.[1]
Quincy has an average monthly Global Horizontal Irradiance (GHI) of 4.12 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 2% less than the average monthly Direct Normal Irradiance (DNI) of 4.21 kWh/m2/day. [1]
Solar installations in Quincy that are always titled at the latitude of Quincy (Average Tilt at Latitude or ATaL) average 4.77 kWh/m2/day, or about 16% greater than the average monthly GHI of 4.12 kWh/m2/day and approximately 13% greater than the average monthly DNI of 4.21 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 Quincy
Solar Radiation Data in Quincy, IL
See the chart below for monthly solar radiation levels in Quincy.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Quincy, IL
Quincy, IL has a average annual solar radiation value of 5.02 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Quincy is August with an average of 6.14 kWh/m2/day, followed by July at 6.05 kWh/m2/day and September at 5.98 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Quincy (Illinois) are December with an average of 3.15 kWh/m2/day, followed by January with an average of 3.89 kWh/m2/day and November at 3.96 kWh/m2/day. [1]
Solar Power Comparison: Quincy vs. the U.S.
Solar Power Levels in Quincy
The average monthly solar radiation level in Quincy, IL, of 5.02 kilowatt hours per square meter per day (kWh/m2/day) is approximately 28% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 24% 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: Quincy vs. the U.S.
Below is a month-by-month comparison of how average Quincy 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 Quincy, IL at this current time.
Solar Power Output in Quincy
The Power of Solar in Quincy, IL
Monthly AC solar system output averages for Quincy (il). Month-by-month solar power, as ranked by AC output, in Quincy. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Quincy, IL
Quincy (IL) has a average annual solar AC output value of 5727.75 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Quincy is July with an average of 561.91 kWhac, followed by August at 560.21 kWhac and September at 541.85 kWhac. [2]
The three months that historically average the lowest average solar output levels in Quincy (Illinois) are December with an average of 324.54 kWhac, followed by November with an average of 384.85 kWhac and January at 404.33 kWhac. [2]
Cost of Utilities in Quincy
Quincy Electricity Costs
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Solar Power Poll: Quincy
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Quincy Natural Gas Costs
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Gentle Breeze: 12 mps ENE
Precip.: Chance of Rain
Humidity: 79%
Cloud cover: 100%
Wed Dec 25
45°F
Moderate Rain
Min: 41°F
Max: 45°F
Light breeze: 6 mps ENE
Precip.: Chance of Rain
Humidity: 99%
Cloud cover: 100%
Thu Dec 26
48°F
Light Rain
Min: 42°F
Max: 51°F
Gentle Breeze: 12 mps ESE
Precip.: Chance of Rain
Humidity: 97%
Cloud cover: 99%
More about Quincy
About Quincy
The city of Quincy, IL in Adams County has an approximate population of 40,633. [6]
Quincy, IL Solar Energy
To learn more about solar energy and solar power Quincy, IL, or for more solar-related resources for Quincy, 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.