See the chart below to see how different types of solar panel installations compare in 81221.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical 81221 data, solar panels that always track the sun throughout the day will produce the maximum solar energy output in 81221. [1]
The region associated with 81221 has an average monthly Global Horizontal Irradiance (GHI) of 4.84 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 24% less than the average monthly Direct Normal Irradiance (DNI) of 6.38 kWh/m2/day. [1]
Solar installations in 81221 that are always titled at the latitude of Coal Creek (Average Tilt at Latitude or ATaL) average 5.86 kWh/m2/day, or about 21% greater than the average monthly GHI of 4.84 kWh/m2/day and approximately 8% less than the average monthly DNI of 6.38 kWh/m2/day. [1]
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: 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: 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.
See the chart below for monthly solar radiation levels in 81221.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
The region associated with 81221 has a average annual solar radiation value of 6.03 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 81221 is September with an average of 6.64 kWh/m2/day, followed by April at 6.37 kWh/m2/day and June at 6.37 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 81221 are December with an average of 5.18 kWh/m2/day, followed by January with an average of 5.38 kWh/m2/day and November at 5.68 kWh/m2/day. [1]
The average monthly solar radiation level in 81221, of 6.03 kilowatt hours per square meter per day (kWh/m2/day) is approximately 53% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 9% 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).
Below is a month-by-month comparison of how average 81221 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 81221 at the current time.
Monthly AC solar system output averages for 81221. Month-by-month solar power, as ranked by AC output, in 81221. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
81221 has a average annual solar AC output value of 6804.87 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 81221 is March with an average of 616.47 kWhac, followed by September at 603.12 kWhac and October at 595.04 kWhac. [2]
The three months that historically average the lowest average solar output levels in 81221 are February with an average of 515.22 kWhac, followed by December with an average of 523.89 kWhac and January at 533.98 kWhac. [2]
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The ZIP code 81221 is associated with the city of Coal Creek in Fremont County in Colorado.
To learn more about solar energy and solar power in 81221, or for more solar-related resources for CO, check out the U.S. Energy Information Administration.
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