Based on historical Castalia, 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 Castalia.[1]
Castalia has an average monthly Global Horizontal Irradiance (GHI) of 3.83 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 Castalia that are always titled at the latitude of Castalia (Average Tilt at Latitude or ATaL) average 4.45 kWh/m2/day, or about 16% greater than the average monthly GHI of 3.83 kWh/m2/day and approximately 13% 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 Castalia
Solar Radiation Data in Castalia, IA
See the chart below for monthly solar radiation levels in Castalia.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Castalia, IA
Castalia, 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 Castalia is July with an average of 6.19 kWh/m2/day, followed by June at 5.95 kWh/m2/day and August at 5.85 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Castalia (Iowa) are December with an average of 2.75 kWh/m2/day, followed by January with an average of 3.22 kWh/m2/day and November at 3.76 kWh/m2/day. [1]
Solar Power Comparison: Castalia vs. the U.S.
Solar Power Levels in Castalia
The average monthly solar radiation level in Castalia, 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: Castalia vs. the U.S.
Below is a month-by-month comparison of how average Castalia 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 Castalia, IA at this current time.
Solar Power Output in Castalia
The Power of Solar in Castalia, IA
Monthly AC solar system output averages for Castalia (ia). Month-by-month solar power, as ranked by AC output, in Castalia. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Castalia, IA
Castalia (IA) has a average annual solar AC output value of 5511.36 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Castalia is July with an average of 576.56 kWhac, followed by August at 548.73 kWhac and June at 544.24 kWhac. [2]
The three months that historically average the lowest average solar output levels in Castalia (Iowa) are December with an average of 288.62 kWhac, followed by January with an average of 342.33 kWhac and February at 366.49 kWhac. [2]
Cost of Utilities in Castalia
Castalia Electricity Costs
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Solar Power Poll: Castalia
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Castalia Natural Gas Costs
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Fresh Breeze: 20 mps ESE
Precip.: Chance of Rain
Humidity: 96%
Cloud cover: 100%
More about Castalia
About Castalia
The city of Castalia, IA in Winneshiek County has an approximate population of 173. [6]
Castalia, IA Solar Energy
To learn more about solar energy and solar power Castalia, IA, or for more solar-related resources for Castalia, 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.