See the chart below to see how different types of solar panel installations compare in 77642.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical 77642 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 77642. [1]
The region associated with 77642 has an average monthly Global Horizontal Irradiance (GHI) of 4.57 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 9% greater than the average monthly Direct Normal Irradiance (DNI) of 4.2 kWh/m2/day. [1]
Solar installations in 77642 that are always titled at the latitude of Port Arthur (Average Tilt at Latitude or ATaL) average 5 kWh/m2/day, or about 9% greater than the average monthly GHI of 4.57 kWh/m2/day and approximately 19% greater than the average monthly DNI of 4.2 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 77642.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
The region associated with 77642 has a average annual solar radiation value of 5.26 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 77642 is September with an average of 5.82 kWh/m2/day, followed by October at 5.8 kWh/m2/day and August at 5.64 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 77642 are December with an average of 4.1 kWh/m2/day, followed by February with an average of 4.63 kWh/m2/day and January at 4.77 kWh/m2/day. [1]
The average monthly solar radiation level in 77642, of 5.26 kilowatt hours per square meter per day (kWh/m2/day) is approximately 34% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 20% 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 77642 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 77642 at the current time.
Monthly AC solar system output averages for 77642. Month-by-month solar power, as ranked by AC output, in 77642. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
77642 has a average annual solar AC output value of 5817.61 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 77642 is October with an average of 538.26 kWhac, followed by May at 522.82 kWhac and September at 519.98 kWhac. [2]
The three months that historically average the lowest average solar output levels in 77642 are December with an average of 398.05 kWhac, followed by February with an average of 401.07 kWhac and January at 462.42 kWhac. [2]
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The ZIP code 77642 is associated with the city of Port Arthur in Jefferson County in Texas.
To learn more about solar energy and solar power in 77642, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.
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