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Solar Power in 78155 (Seguin, TX)

Solar Energy in 78155

The month of August has the highest historical solar radition values in 78155 with an average of 6.28 kWh/m2/day. [More]

Solar Panels in 78155

Solar panels in 78155 that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in 78155

The total length of the day in 78155 (Seguin, TX) today (January 08, 2026) will be 10 hours and 24 minutes. [More]

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78155 Solar Energy

Solar Energy in 78155 (Seguin, TX)

Solar Energy Data for 78155

See the chart below to see how different types of solar panel installations compare in 78155.

* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.


Solar Energy Analysis for 78155

Solar Radiation Data in 78155

Based on historical 78155 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 78155. [1]

The region associated with 78155 has an average monthly Global Horizontal Irradiance (GHI) of 4.76 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% greater than the average monthly Direct Normal Irradiance (DNI) of 4.62 kWh/m2/day. [1]

Solar installations in 78155 that are always titled at the latitude of Seguin (Average Tilt at Latitude or ATaL) average 5.19 kWh/m2/day, or about 9% greater than the average monthly GHI of 4.76 kWh/m2/day and approximately 12% greater than the average monthly DNI of 4.62 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 78155

Solar Radiation Data in 78155

See the chart below for monthly solar radiation levels in 78155.

* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)

Solar Radiation Analysis for 78155

Solar Radiation Data in 78155

The region associated with 78155 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 78155 is August with an average of 6.28 kWh/m2/day, followed by September at 6.01 kWh/m2/day and October at 5.86 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in 78155 are December with an average of 4.54 kWh/m2/day, followed by January with an average of 4.76 kWh/m2/day and November at 4.84 kWh/m2/day. [1]

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Solar Power Comparison: 78155 vs. the U.S.

Solar Power Levels in 78155

The average monthly solar radiation level in 78155, 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: 78155 vs. the U.S.

Below is a month-by-month comparison of how average 78155 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).

Solar Data & Statistics for 78155

Sunrise / Sunset in 78155

  • Sunrise/Sunset for January 08, 2026 [2]
    • Sunrise: 7:26 am
    • Sunset: 5:50 pm
    • Length of Day: 10:24
Solar Energy Statistics for 78155

Best Months for Solar in 78155

  • Top Solar Power Months Historically [1]
    • Solar Radiation August (6.28 kWh/m2/day)
    • ATaL: August (6.15 kWh/m2/day)
    • DNI: July (5.59 kWh/m2/day)
    • GHI: June (6.68 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in 78155

We do not have data on solar panel installations in ZIP Code 78155 at the current time.

Solar Power Output in 78155

The Power of Solar in 78155

Monthly AC solar system output averages for 78155. Month-by-month solar power, as ranked by AC output, in 78155. [2]

* Amounts listed in kWhac (kilowatt hours (AC))

Solar Output Analysis for 78155

Solar Radiation Data in 78155

78155 has a average annual solar AC output value of 5984.13 kilowatt hours (AC). [2]

The month with the highest historical solar power output in 78155 is August with an average of 573.56 kWhac, followed by October at 542 kWhac and September at 530.88 kWhac. [2]

The three months that historically average the lowest average solar output levels in 78155 are December with an average of 443.42 kWhac, followed by November with an average of 447.57 kWhac and February at 457.54 kWhac. [2]

Weather Forecast for 78155 [5]

Thu Jan 8
70°F
Overcast Clouds
Min: 67°F
Max: 80°F
Moderate breeze: 17 mps SSE
Precip.: n/a
Humidity: 68%
Cloud cover: 90%
Fri Jan 9
78°F
Light Rain
Min: 61°F
Max: 79°F
Gentle Breeze: 12 mps NNW
Precip.: Chance of Rain
Humidity: 61%
Cloud cover: 97%
Sat Jan 10
59°F
Broken Clouds
Min: 47°F
Max: 61°F
Fresh Breeze: 24 mps N
Precip.: n/a
Humidity: 38%
Cloud cover: 59%
Sun Jan 11
59°F
Overcast Clouds
Min: 42°F
Max: 63°F
Gentle Breeze: 11 mps NE
Precip.: n/a
Humidity: 17%
Cloud cover: 100%
Mon Jan 12
57°F
Sky Is Clear
Min: 41°F
Max: 62°F
Light breeze: 7 mps SE
Precip.: n/a
Humidity: 32%
Cloud cover: 0%
Tue Jan 13
61°F
Overcast Clouds
Min: 45°F
Max: 66°F
Light breeze: 7 mps SSW
Precip.: n/a
Humidity: 55%
Cloud cover: 100%

More about 78155

About 78155

The ZIP code 78155 is associated with the city of Seguin in Guadalupe County in Texas.

78155 Solar Power

78155 Solar Energy & Power

To learn more about solar energy and solar power in 78155, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.

Did you know?

Solar cells convert sunlight into electricity through a physical process known as the photovoltaic effect.

Cities in Texas

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References

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