Based on historical 37331 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 37331.[1]
The region associated with 37331 has an average monthly Global Horizontal Irradiance (GHI) of 4.37 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 4% greater than the average monthly Direct Normal Irradiance (DNI) of 4.19 kWh/m2/day. [1]
Solar installations in 37331 that are always titled at the latitude of Etowah (Average Tilt at Latitude or ATaL) average 4.95 kWh/m2/day, or about 13% greater than the average monthly GHI of 4.37 kWh/m2/day and approximately 18% greater than the average monthly DNI of 4.19 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 37331
Solar Radiation Data in 37331
See the chart below for monthly solar radiation levels in 37331.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for 37331
The region associated with 37331 has a average annual solar radiation value of 5.15 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 37331 is August with an average of 5.91 kWh/m2/day, followed by September at 5.9 kWh/m2/day and July at 5.67 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 37331 are December with an average of 3.88 kWh/m2/day, followed by January with an average of 4.12 kWh/m2/day and February at 4.49 kWh/m2/day. [1]
Solar Power Comparison: 37331 vs. the U.S.
Solar Power Levels in 37331
The average monthly solar radiation level in 37331, of 5.15 kilowatt hours per square meter per day (kWh/m2/day) is approximately 31% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 22% 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: 37331 vs. the U.S.
Below is a month-by-month comparison of how average 37331 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 37331 at the current time.
Solar Power Output in 37331
The Power of Solar in 37331
Monthly AC solar system output averages for 37331. Month-by-month solar power, as ranked by AC output, in 37331. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for 37331
37331 has a average annual solar AC output value of 5602.5 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 37331 is August with an average of 525.12 kWhac, followed by September at 515.45 kWhac and May at 509.49 kWhac. [2]
The three months that historically average the lowest average solar output levels in 37331 are December with an average of 377.37 kWhac, followed by February with an average of 389 kWhac and January at 400.98 kWhac. [2]
Light breeze: 5 mps W
Precip.: Chance of Rain
Humidity: 48%
Cloud cover: 25%
Mon Jul 28
95°F
Light Rain
Min: 74°F
Max: 98°F
Light breeze: 7 mps N
Precip.: Chance of Rain
Humidity: 44%
Cloud cover: 6%
More about 37331
About 37331
The ZIP code 37331 is associated with the city of Etowah in McMinn County in Tennessee.
37331 Solar Energy & Power
To learn more about solar energy and solar power in 37331, or for more solar-related resources for TN, check out the U.S. Energy Information Administration.
Did you know?
The solar energy that strikes the Earth in one hour could provide all of the Earth's energy needs for a complete year.