Based on historical Farmington, 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 Farmington.[1]
Farmington has an average monthly Global Horizontal Irradiance (GHI) of 4.02 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 0% less than the average monthly Direct Normal Irradiance (DNI) of 4.03 kWh/m2/day. [1]
Solar installations in Farmington that are always titled at the latitude of Farmington (Average Tilt at Latitude or ATaL) average 4.65 kWh/m2/day, or about 16% greater than the average monthly GHI of 4.02 kWh/m2/day and approximately 15% greater than the average monthly DNI of 4.03 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 Farmington
Solar Radiation Data in Farmington, IL
See the chart below for monthly solar radiation levels in Farmington.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Farmington, IL
Farmington, IL has a average annual solar radiation value of 4.91 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Farmington is July with an average of 6.2 kWh/m2/day, followed by August at 5.93 kWh/m2/day and September at 5.92 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Farmington (Illinois) are December with an average of 2.98 kWh/m2/day, followed by January with an average of 3.48 kWh/m2/day and November at 3.92 kWh/m2/day. [1]
Solar Power Comparison: Farmington vs. the U.S.
Solar Power Levels in Farmington
The average monthly solar radiation level in Farmington, IL, of 4.91 kilowatt hours per square meter per day (kWh/m2/day) is approximately 25% 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: Farmington vs. the U.S.
Below is a month-by-month comparison of how average Farmington 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 Farmington, IL at this current time.
Solar Power Output in Farmington
The Power of Solar in Farmington, IL
Monthly AC solar system output averages for Farmington (il). Month-by-month solar power, as ranked by AC output, in Farmington. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Farmington, IL
Farmington (IL) has a average annual solar AC output value of 5598.74 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Farmington is July with an average of 577.01 kWhac, followed by August at 544.82 kWhac and May at 542.71 kWhac. [2]
The three months that historically average the lowest average solar output levels in Farmington (Illinois) are December with an average of 312.74 kWhac, followed by January with an average of 363.47 kWhac and November at 381.91 kWhac. [2]
Cost of Utilities in Farmington
Farmington Electricity Costs
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Solar Power Poll: Farmington
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Farmington Natural Gas Costs
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Gentle Breeze: 10 mps E
Precip.: Chance of Rain
Humidity: 81%
Cloud cover: 100%
Wed Dec 25
43°F
Light Rain
Min: 39°F
Max: 44°F
Light breeze: 6 mps N
Precip.: Chance of Rain
Humidity: 84%
Cloud cover: 99%
Thu Dec 26
48°F
Light Rain
Min: 37°F
Max: 53°F
Fresh Breeze: 20 mps SE
Precip.: Chance of Rain
Humidity: 76%
Cloud cover: 100%
More about Farmington
About Farmington
The city of Farmington, IL in Fulton County has an approximate population of 2,448. [6]
Farmington, IL Solar Energy
To learn more about solar energy and solar power Farmington, IL, or for more solar-related resources for Farmington, visit the U.S. Energy Information Administration.
Did you know?
Some tax incentives and rebate programs are designed to spur the use of solar energy. These vary by location.