Based on historical Modesto, 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 Modesto.[1]
Modesto has an average monthly Global Horizontal Irradiance (GHI) of 4.17 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% less than the average monthly Direct Normal Irradiance (DNI) of 4.28 kWh/m2/day. [1]
Solar installations in Modesto that are always titled at the latitude of Modesto (Average Tilt at Latitude or ATaL) average 4.82 kWh/m2/day, or about 16% greater than the average monthly GHI of 4.17 kWh/m2/day and approximately 13% greater than the average monthly DNI of 4.28 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 Modesto
Solar Radiation Data in Modesto, IL
See the chart below for monthly solar radiation levels in Modesto.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Modesto, IL
Modesto, IL has a average annual solar radiation value of 5.03 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Modesto is August with an average of 6.16 kWh/m2/day, followed by June at 5.99 kWh/m2/day and July at 5.99 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Modesto (Illinois) are December with an average of 3.2 kWh/m2/day, followed by January with an average of 3.47 kWh/m2/day and November at 4.16 kWh/m2/day. [1]
Solar Power Comparison: Modesto vs. the U.S.
Solar Power Levels in Modesto
The average monthly solar radiation level in Modesto, IL, of 5.03 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: Modesto vs. the U.S.
Below is a month-by-month comparison of how average Modesto 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 Modesto, IL at this current time.
Solar Power Output in Modesto
The Power of Solar in Modesto, IL
Monthly AC solar system output averages for Modesto (il). Month-by-month solar power, as ranked by AC output, in Modesto. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Modesto, IL
Modesto (IL) has a average annual solar AC output value of 5712.72 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Modesto is August with an average of 559.48 kWhac, followed by July at 555.49 kWhac and June at 537.69 kWhac. [2]
The three months that historically average the lowest average solar output levels in Modesto (Illinois) are December with an average of 333.19 kWhac, followed by January with an average of 360.97 kWhac and February at 405.81 kWhac. [2]
Cost of Utilities in Modesto
Modesto Electricity Costs
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Solar Power Poll: Modesto
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Modesto Natural Gas Costs
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Gentle Breeze: 12 mps ESE
Precip.: Chance of Rain
Humidity: 88%
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: 97%
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 Modesto
About Modesto
The village of Modesto, IL in Macoupin County has an approximate population of 189. [6]
Modesto, IL Solar Energy
To learn more about solar energy and solar power Modesto, IL, or for more solar-related resources for Modesto, visit the U.S. Energy Information Administration.
Did you know?
The largest solar power plant in the world covers 1000 acres & is located in the Mojave Desert in California.