The month of April has the highest historical solar radition values in 79529 with an average of 6.6 kWh/m2/day. [More]
Solar Panels in 79529
Solar panels in 79529 that are tilted toward the equator at an angle equal to the current latitude will produce the maximum solar energy output. [More]
Sunrise & Sunset in 79529
The total length of the day in 79529 (Knox City, TX) today (July 31, 2025) will be 13 hours and 50 minutes. [More]
Solar Energy in 79529 (Knox City, TX)
Solar Energy Data for 79529
See the chart below to see how different types of solar panel installations compare in 79529.
Based on historical 79529 data, solar panels that are tilted toward the equator at an angle equal to the current latitude will produce the maximum solar energy output in 79529.[1]
The region associated with 79529 has an average monthly Global Horizontal Irradiance (GHI) of 5.1 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 12% less than the average monthly Direct Normal Irradiance (DNI) of 5.82 kWh/m2/day. [1]
Solar installations in 79529 that are always titled at the latitude of Knox City (Average Tilt at Latitude or ATaL) average 5.82 kWh/m2/day, or about 14% greater than the average monthly GHI of 5.1 kWh/m2/day and approximately equal to the average monthly DNI of 5.82 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 79529
Solar Radiation Data in 79529
See the chart below for monthly solar radiation levels in 79529.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for 79529
The region associated with 79529 has a average annual solar radiation value of 6.07 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 79529 is April with an average of 6.6 kWh/m2/day, followed by August at 6.5 kWh/m2/day and September at 6.49 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 79529 are December with an average of 4.99 kWh/m2/day, followed by November with an average of 5.47 kWh/m2/day and January at 5.62 kWh/m2/day. [1]
Solar Power Comparison: 79529 vs. the U.S.
Solar Power Levels in 79529
The average monthly solar radiation level in 79529, of 6.07 kilowatt hours per square meter per day (kWh/m2/day) is approximately 54% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 8% 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: 79529 vs. the U.S.
Below is a month-by-month comparison of how average 79529 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 79529 at the current time.
Solar Power Output in 79529
The Power of Solar in 79529
Monthly AC solar system output averages for 79529. Month-by-month solar power, as ranked by AC output, in 79529. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for 79529
79529 has a average annual solar AC output value of 6718.1 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 79529 is April with an average of 603.36 kWhac, followed by March at 594 kWhac and October at 585.02 kWhac. [2]
The three months that historically average the lowest average solar output levels in 79529 are December with an average of 491.94 kWhac, followed by February with an average of 506.56 kWhac and November at 516.09 kWhac. [2]
Fresh Breeze: 21 mps ESE
Precip.: Chance of Rain
Humidity: 25%
Cloud cover: 7%
Tue Aug 5
100°F
Light Rain
Min: 77°F
Max: 105°F
Moderate breeze: 13 mps SE
Precip.: Chance of Rain
Humidity: 30%
Cloud cover: 2%
More about 79529
About 79529
The ZIP code 79529 is associated with the city of Knox City in Knox County in Texas.
79529 Solar Energy & Power
To learn more about solar energy and solar power in 79529, or for more solar-related resources for TX, 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.