Based on historical San Marcos, 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 San Marcos.[1]
San Marcos has an average monthly Global Horizontal Irradiance (GHI) of 4.73 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 2% greater than the average monthly Direct Normal Irradiance (DNI) of 4.63 kWh/m2/day. [1]
Solar installations in San Marcos that are always titled at the latitude of San Marcos (Average Tilt at Latitude or ATaL) average 5.17 kWh/m2/day, or about 9% greater than the average monthly GHI of 4.73 kWh/m2/day and approximately 12% greater than the average monthly DNI of 4.63 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 San Marcos
Solar Radiation Data in San Marcos, TX
See the chart below for monthly solar radiation levels in San Marcos.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for San Marcos, TX
San Marcos, TX has a average annual solar radiation value of 5.44 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in San Marcos is August with an average of 6.14 kWh/m2/day, followed by October at 6.02 kWh/m2/day and September at 5.92 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in San Marcos (Texas) are December with an average of 4.41 kWh/m2/day, followed by January with an average of 4.94 kWh/m2/day and November at 5.02 kWh/m2/day. [1]
Solar Power Comparison: San Marcos vs. the U.S.
Solar Power Levels in San Marcos
The average monthly solar radiation level in San Marcos, TX, of 5.44 kilowatt hours per square meter per day (kWh/m2/day) is approximately 38% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 18% 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: San Marcos vs. the U.S.
Below is a month-by-month comparison of how average San Marcos 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 San Marcos, TX at this current time.
Solar Power Output in San Marcos
The Power of Solar in San Marcos, TX
Monthly AC solar system output averages for San Marcos (tx). Month-by-month solar power, as ranked by AC output, in San Marcos. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for San Marcos, TX
San Marcos (TX) has a average annual solar AC output value of 6002.84 kilowatt hours (AC). [2]
The month with the highest historical solar power output in San Marcos is October with an average of 559.52 kWhac, followed by August at 552.7 kWhac and July at 534.5 kWhac. [2]
The three months that historically average the lowest average solar output levels in San Marcos (Texas) are December with an average of 432.84 kWhac, followed by February with an average of 461.88 kWhac and November at 472.32 kWhac. [2]
Cost of Utilities in San Marcos
San Marcos Electricity Costs
Sorry, San Marcos residential electricity prices are currently unavailable.
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Solar Power Poll: San Marcos
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San Marcos Natural Gas Costs
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Moderate breeze: 12 mps SE
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Tue Apr 30
85°F
Light Rain
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Max: 85°F
Moderate breeze: 15 mps S
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Wed May 1
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Light Rain
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Thu May 2
81°F
Light Rain
Min: 72°F
Max: 86°F
Moderate breeze: 17 mps SE
Precip.: Chance of Rain
Humidity: 68%
Cloud cover: 47%
More about San Marcos
About San Marcos
The city of San Marcos, TX in Hays County has an approximate population of 44,894. [6]
San Marcos, TX Solar Energy
To learn more about solar energy and solar power San Marcos, TX, or for more solar-related resources for San Marcos, visit the U.S. Energy Information Administration.
Did you know?
The largest solar power plant in the world covers 1000 acres & is located in the Mojave Desert in California.
