See the chart below to see how different types of solar panel installations compare in Robert Lee.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Robert Lee, TX data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Robert Lee. [1]
Robert Lee has an average monthly Global Horizontal Irradiance (GHI) of 5.16 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 11% less than the average monthly Direct Normal Irradiance (DNI) of 5.77 kWh/m2/day. [1]
Solar installations in Robert Lee that are always titled at the latitude of Robert Lee (Average Tilt at Latitude or ATaL) average 5.82 kWh/m2/day, or about 13% greater than the average monthly GHI of 5.16 kWh/m2/day and approximately 1% greater than the average monthly DNI of 5.77 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 Robert Lee.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Robert Lee, TX has a average annual solar radiation value of 5.95 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Robert Lee is April with an average of 6.43 kWh/m2/day, followed by September at 6.36 kWh/m2/day and August at 6.3 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Robert Lee (Texas) are December with an average of 5.12 kWh/m2/day, followed by January with an average of 5.44 kWh/m2/day and November at 5.74 kWh/m2/day. [1]
The average monthly solar radiation level in Robert Lee, TX, of 5.95 kilowatt hours per square meter per day (kWh/m2/day) is approximately 51% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 10% 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 Robert Lee 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 Robert Lee, TX at this current time.
Monthly AC solar system output averages for Robert Lee (tx). Month-by-month solar power, as ranked by AC output, in Robert Lee. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Robert Lee (TX) has a average annual solar AC output value of 6629.49 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Robert Lee is April with an average of 589.01 kWhac, followed by October at 586.43 kWhac and August at 580.14 kWhac. [2]
The three months that historically average the lowest average solar output levels in Robert Lee (Texas) are December with an average of 505.67 kWhac, followed by June with an average of 531.08 kWhac and February at 532.83 kWhac. [2]
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The city of Robert Lee, TX in Coke County has an approximate population of 1,049. [6]
To learn more about solar energy and solar power Robert Lee, TX, or for more solar-related resources for Robert Lee, visit the U.S. Energy Information Administration.
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