Based on historical Gillespie, 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 Gillespie.[1]
Gillespie has an average monthly Global Horizontal Irradiance (GHI) of 4.18 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% less than the average monthly Direct Normal Irradiance (DNI) of 4.29 kWh/m2/day. [1]
Solar installations in Gillespie that are always titled at the latitude of Gillespie (Average Tilt at Latitude or ATaL) average 4.82 kWh/m2/day, or about 15% greater than the average monthly GHI of 4.18 kWh/m2/day and approximately 12% greater than the average monthly DNI of 4.29 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 Gillespie
Solar Radiation Data in Gillespie, IL
See the chart below for monthly solar radiation levels in Gillespie.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Gillespie, IL
Gillespie, IL has a average annual solar radiation value of 5 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Gillespie is July with an average of 6.25 kWh/m2/day, followed by August at 6.06 kWh/m2/day and June at 5.87 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Gillespie (Illinois) are December with an average of 3.18 kWh/m2/day, followed by January with an average of 3.64 kWh/m2/day and November at 4.15 kWh/m2/day. [1]
Solar Power Comparison: Gillespie vs. the U.S.
Solar Power Levels in Gillespie
The average monthly solar radiation level in Gillespie, IL, of 5 kilowatt hours per square meter per day (kWh/m2/day) is approximately 27% 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: Gillespie vs. the U.S.
Below is a month-by-month comparison of how average Gillespie 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 Gillespie, IL at this current time.
Solar Power Output in Gillespie
The Power of Solar in Gillespie, IL
Monthly AC solar system output averages for Gillespie (il). Month-by-month solar power, as ranked by AC output, in Gillespie. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Gillespie, IL
Gillespie (IL) has a average annual solar AC output value of 5668.33 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Gillespie is July with an average of 567.79 kWhac, followed by August at 556.49 kWhac and June at 531.35 kWhac. [2]
The three months that historically average the lowest average solar output levels in Gillespie (Illinois) are December with an average of 323.97 kWhac, followed by January with an average of 374.93 kWhac and February at 386.71 kWhac. [2]
Cost of Utilities in Gillespie
Gillespie Electricity Costs
Sorry, Gillespie residential electricity prices are currently unavailable.
Please check back later.
Solar Power Poll: Gillespie
Vote now: Given all of the data and analysis provided for Gillespie, is solar power a good choice for residents of this city?
Gillespie Natural Gas Costs
Sorry, Illinois residential natural gas prices are currently unavailable.
Gentle Breeze: 12 mps ESE
Precip.: Chance of Rain
Humidity: 96%
Cloud cover: 100%
Wed Dec 25
45°F
Moderate Rain
Min: 45°F
Max: 47°F
Gentle Breeze: 12 mps SE
Precip.: Chance of Rain
Humidity: 96%
Cloud cover: 100%
Thu Dec 26
50°F
Light Rain
Min: 48°F
Max: 51°F
Fresh Breeze: 21 mps ESE
Precip.: Chance of Rain
Humidity: 97%
Cloud cover: 100%
More about Gillespie
About Gillespie
The city of Gillespie, IL in Macoupin County has an approximate population of 3,319. [6]
Gillespie, IL Solar Energy
To learn more about solar energy and solar power Gillespie, IL, or for more solar-related resources for Gillespie, visit the U.S. Energy Information Administration.
Did you know?
Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.