Based on historical 61101 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 61101.[1]
The region associated with 61101 has an average monthly Global Horizontal Irradiance (GHI) of 3.85 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 1% greater than the average monthly Direct Normal Irradiance (DNI) of 3.8 kWh/m2/day. [1]
Solar installations in 61101 that are always titled at the latitude of Rockford (Average Tilt at Latitude or ATaL) average 4.49 kWh/m2/day, or about 17% greater than the average monthly GHI of 3.85 kWh/m2/day and approximately 18% greater than the average monthly DNI of 3.8 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 61101
Solar Radiation Data in 61101
See the chart below for monthly solar radiation levels in 61101.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for 61101
The region associated with 61101 has a average annual solar radiation value of 4.8 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 61101 is July with an average of 5.94 kWh/m2/day, followed by June at 5.93 kWh/m2/day and August at 5.88 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 61101 are December with an average of 2.88 kWh/m2/day, followed by January with an average of 3.38 kWh/m2/day and November at 3.73 kWh/m2/day. [1]
Solar Power Comparison: 61101 vs. the U.S.
Solar Power Levels in 61101
The average monthly solar radiation level in 61101, of 4.8 kilowatt hours per square meter per day (kWh/m2/day) is approximately 22% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 27% 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: 61101 vs. the U.S.
Below is a month-by-month comparison of how average 61101 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 have data on solar panel installations in ZIP Code 61101 at the current time.
Solar Power Output in 61101
The Power of Solar in 61101
Monthly AC solar system output averages for 61101. Month-by-month solar power, as ranked by AC output, in 61101. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for 61101
61101 has a average annual solar AC output value of 5521.68 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 61101 is August with an average of 550.56 kWhac, followed by July at 544.15 kWhac and June at 538.23 kWhac. [2]
The three months that historically average the lowest average solar output levels in 61101 are December with an average of 306.7 kWhac, followed by January with an average of 356.14 kWhac and November at 366.48 kWhac. [2]
Moderate breeze: 14 mps S
Precip.: Chance of Rain
Humidity: 53%
Cloud cover: 39%
Wed May 1
70°F
Moderate Rain
Min: 58°F
Max: 70°F
Moderate breeze: 13 mps E
Precip.: Chance of Rain
Humidity: 69%
Cloud cover: 96%
More about 61101
About 61101
The ZIP code 61101 is associated with the city of Rockford in Winnebago County in Illinois.
61101 Solar Energy & Power
To learn more about solar energy and solar power in 61101, or for more solar-related resources for IL, check out the U.S. Energy Information Administration.
Did you know?
Solar cells convert sunlight into electricity through a physical process known as the photovoltaic effect.