Based on historical Rock Valley, 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 Rock Valley.[1]
Rock Valley has an average monthly Global Horizontal Irradiance (GHI) of 4 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 8% less than the average monthly Direct Normal Irradiance (DNI) of 4.37 kWh/m2/day. [1]
Solar installations in Rock Valley that are always titled at the latitude of Rock Valley (Average Tilt at Latitude or ATaL) average 4.72 kWh/m2/day, or about 18% greater than the average monthly GHI of 4 kWh/m2/day and approximately 8% greater than the average monthly DNI of 4.37 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 Rock Valley
Solar Radiation Data in Rock Valley, IA
See the chart below for monthly solar radiation levels in Rock Valley.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Rock Valley, IA
Rock Valley, IA has a average annual solar radiation value of 4.99 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Rock Valley is July with an average of 6.41 kWh/m2/day, followed by June at 6.06 kWh/m2/day and August at 6 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Rock Valley (Iowa) are December with an average of 3.08 kWh/m2/day, followed by January with an average of 3.3 kWh/m2/day and November at 3.94 kWh/m2/day. [1]
Solar Power Comparison: Rock Valley vs. the U.S.
Solar Power Levels in Rock Valley
The average monthly solar radiation level in Rock Valley, IA, of 4.99 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 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: Rock Valley vs. the U.S.
Below is a month-by-month comparison of how average Rock Valley 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 Rock Valley, IA at this current time.
Solar Power Output in Rock Valley
The Power of Solar in Rock Valley, IA
Monthly AC solar system output averages for Rock Valley (ia). Month-by-month solar power, as ranked by AC output, in Rock Valley. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Rock Valley, IA
Rock Valley (IA) has a average annual solar AC output value of 5726.88 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Rock Valley is July with an average of 590.62 kWhac, followed by August at 556.9 kWhac and June at 548.75 kWhac. [2]
The three months that historically average the lowest average solar output levels in Rock Valley (Iowa) are December with an average of 321.62 kWhac, followed by January with an average of 349.26 kWhac and February at 385.85 kWhac. [2]
Cost of Utilities in Rock Valley
Rock Valley Electricity Costs
Sorry, Rock Valley residential electricity prices are currently unavailable.
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Solar Power Poll: Rock Valley
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Rock Valley Natural Gas Costs
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Moderate breeze: 16 mps E
Precip.: Chance of Rain
Humidity: 94%
Cloud cover: 100%
More about Rock Valley
About Rock Valley
The city of Rock Valley, IA in Sioux County has an approximate population of 3,354. [6]
Rock Valley, IA Solar Energy
To learn more about solar energy and solar power Rock Valley, IA, or for more solar-related resources for Rock Valley, visit the U.S. Energy Information Administration.
Did you know?
Solar power is renewable, does not produce any pollutants and is one of the cleanest source of energy.
