Based on historical Royal, 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 Royal.[1]
Royal has an average monthly Global Horizontal Irradiance (GHI) of 3.96 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 7% less than the average monthly Direct Normal Irradiance (DNI) of 4.28 kWh/m2/day. [1]
Solar installations in Royal that are always titled at the latitude of Royal (Average Tilt at Latitude or ATaL) average 4.64 kWh/m2/day, or about 17% greater than the average monthly GHI of 3.96 kWh/m2/day and approximately 8% 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 Royal
Solar Radiation Data in Royal, IA
See the chart below for monthly solar radiation levels in Royal.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Royal, IA
Royal, IA has a average annual solar radiation value of 4.94 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Royal is July with an average of 6.35 kWh/m2/day, followed by August at 5.94 kWh/m2/day and September at 5.88 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Royal (Iowa) are December with an average of 3.12 kWh/m2/day, followed by January with an average of 3.35 kWh/m2/day and November at 3.93 kWh/m2/day. [1]
Solar Power Comparison: Royal vs. the U.S.
Solar Power Levels in Royal
The average monthly solar radiation level in Royal, IA, of 4.94 kilowatt hours per square meter per day (kWh/m2/day) is approximately 26% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 25% 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: Royal vs. the U.S.
Below is a month-by-month comparison of how average Royal 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 Royal, IA at this current time.
Solar Power Output in Royal
The Power of Solar in Royal, IA
Monthly AC solar system output averages for Royal (ia). Month-by-month solar power, as ranked by AC output, in Royal. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Royal, IA
Royal (IA) has a average annual solar AC output value of 5687.3 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Royal is July with an average of 590.32 kWhac, followed by August at 554.68 kWhac and May at 540.77 kWhac. [2]
The three months that historically average the lowest average solar output levels in Royal (Iowa) are December with an average of 331.66 kWhac, followed by January with an average of 353.39 kWhac and February at 366.07 kWhac. [2]
Cost of Utilities in Royal
Royal Electricity Costs
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Solar Power Poll: Royal
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Royal Natural Gas Costs
Sorry, Iowa residential natural gas prices are currently unavailable.
The city of Royal, IA in Clay County has an approximate population of 446. [6]
Royal, IA Solar Energy
To learn more about solar energy and solar power Royal, IA, or for more solar-related resources for Royal, 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.