Based on historical Garnavillo, IA data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Garnavillo.[1]
Garnavillo has an average monthly Global Horizontal Irradiance (GHI) of 3.84 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% less than the average monthly Direct Normal Irradiance (DNI) of 3.94 kWh/m2/day. [1]
Solar installations in Garnavillo that are always titled at the latitude of Garnavillo (Average Tilt at Latitude or ATaL) average 4.53 kWh/m2/day, or about 18% greater than the average monthly GHI of 3.84 kWh/m2/day and approximately 15% greater than the average monthly DNI of 3.94 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 Garnavillo
Solar Radiation Data in Garnavillo, IA
See the chart below for monthly solar radiation levels in Garnavillo.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Garnavillo, IA
Garnavillo, IA has a average annual solar radiation value of 4.78 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Garnavillo is July with an average of 6.04 kWh/m2/day, followed by June at 5.69 kWh/m2/day and August at 5.64 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Garnavillo (Iowa) are December with an average of 3.06 kWh/m2/day, followed by January with an average of 3.28 kWh/m2/day and November at 3.43 kWh/m2/day. [1]
Solar Power Comparison: Garnavillo vs. the U.S.
Solar Power Levels in Garnavillo
The average monthly solar radiation level in Garnavillo, IA, of 4.78 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 28% 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: Garnavillo vs. the U.S.
Below is a month-by-month comparison of how average Garnavillo 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 Garnavillo, IA at this current time.
Solar Power Output in Garnavillo
The Power of Solar in Garnavillo, IA
Monthly AC solar system output averages for Garnavillo (ia). Month-by-month solar power, as ranked by AC output, in Garnavillo. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Garnavillo, IA
Garnavillo (IA) has a average annual solar AC output value of 5514.09 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Garnavillo is July with an average of 557.15 kWhac, followed by May at 544.36 kWhac and August at 529.52 kWhac. [2]
The three months that historically average the lowest average solar output levels in Garnavillo (Iowa) are December with an average of 324.43 kWhac, followed by November with an average of 342.84 kWhac and January at 351.1 kWhac. [2]
Cost of Utilities in Garnavillo
Garnavillo Electricity Costs
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Solar Power Poll: Garnavillo
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Garnavillo Natural Gas Costs
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Moderate breeze: 17 mps ESE
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More about Garnavillo
About Garnavillo
The city of Garnavillo, IA in Clayton County has an approximate population of 745. [6]
Garnavillo, IA Solar Energy
To learn more about solar energy and solar power Garnavillo, IA, or for more solar-related resources for Garnavillo, 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.