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Solar Power in 78235 (San Antonio, TX)

Solar Energy in 78235

The month of August has the highest historical solar radition values in 78235 with an average of 6.26 kWh/m2/day. [More]

Solar Panels in 78235

Solar panels in 78235 that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in 78235

The total length of the day in 78235 (San Antonio, TX) today (January 12, 2026) will be 10 hours and 29 minutes. [More]

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78235 Solar Energy

Solar Energy in 78235 (San Antonio, TX)

Solar Energy Data for 78235

See the chart below to see how different types of solar panel installations compare in 78235.

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


Solar Energy Analysis for 78235

Solar Radiation Data in 78235

Based on historical 78235 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 78235. [1]

The region associated with 78235 has an average monthly Global Horizontal Irradiance (GHI) of 4.79 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 2% greater than the average monthly Direct Normal Irradiance (DNI) of 4.7 kWh/m2/day. [1]

Solar installations in 78235 that are always titled at the latitude of San Antonio (Average Tilt at Latitude or ATaL) average 5.23 kWh/m2/day, or about 9% greater than the average monthly GHI of 4.79 kWh/m2/day and approximately 11% greater than the average monthly DNI of 4.7 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 78235

Solar Radiation Data in 78235

See the chart below for monthly solar radiation levels in 78235.

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

Solar Radiation Analysis for 78235

Solar Radiation Data in 78235

The region associated with 78235 has a average annual solar radiation value of 5.47 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in 78235 is August with an average of 6.26 kWh/m2/day, followed by September at 5.97 kWh/m2/day and October at 5.88 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in 78235 are December with an average of 4.58 kWh/m2/day, followed by January with an average of 4.84 kWh/m2/day and November at 5.06 kWh/m2/day. [1]

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Solar Power Comparison: 78235 vs. the U.S.

Solar Power Levels in 78235

The average monthly solar radiation level in 78235, of 5.47 kilowatt hours per square meter per day (kWh/m2/day) is approximately 39% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 17% 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: 78235 vs. the U.S.

Below is a month-by-month comparison of how average 78235 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 78235

Sunrise / Sunset in 78235

  • Sunrise/Sunset for January 12, 2026 [2]
    • Sunrise: 7:27 am
    • Sunset: 5:56 pm
    • Length of Day: 10:29
Solar Energy Statistics for 78235

Best Months for Solar in 78235

  • Top Solar Power Months Historically [1]
    • Solar Radiation August (6.26 kWh/m2/day)
    • ATaL: August (6.22 kWh/m2/day)
    • DNI: August (5.8 kWh/m2/day)
    • GHI: June (6.64 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in 78235

We do not have data on solar panel installations in ZIP Code 78235 at the current time.

Solar Power Output in 78235

The Power of Solar in 78235

Monthly AC solar system output averages for 78235. Month-by-month solar power, as ranked by AC output, in 78235. [2]

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

Solar Output Analysis for 78235

Solar Radiation Data in 78235

78235 has a average annual solar AC output value of 6024.87 kilowatt hours (AC). [2]

The month with the highest historical solar power output in 78235 is August with an average of 573.07 kWhac, followed by October at 544.69 kWhac and July at 532.36 kWhac. [2]

The three months that historically average the lowest average solar output levels in 78235 are December with an average of 447.14 kWhac, followed by November with an average of 466.22 kWhac and January at 469.58 kWhac. [2]

Weather Forecast for 78235 [5]

Mon Jan 12
56°F
Overcast Clouds
Min: 44°F
Max: 57°F
Light breeze: 6 mps NE
Precip.: n/a
Humidity: 36%
Cloud cover: 100%
Tue Jan 13
55°F
Moderate Rain
Min: 48°F
Max: 63°F
Gentle Breeze: 10 mps SSW
Precip.: Chance of Rain
Humidity: 52%
Cloud cover: 95%
Wed Jan 14
68°F
Sky Is Clear
Min: 49°F
Max: 70°F
Fresh Breeze: 18 mps NNE
Precip.: n/a
Humidity: 22%
Cloud cover: 0%
Thu Jan 15
56°F
Sky Is Clear
Min: 45°F
Max: 61°F
Gentle Breeze: 8 mps NNE
Precip.: n/a
Humidity: 34%
Cloud cover: 0%
Fri Jan 16
61°F
Sky Is Clear
Min: 43°F
Max: 66°F
Gentle Breeze: 11 mps S
Precip.: n/a
Humidity: 38%
Cloud cover: 0%
Sat Jan 17
62°F
Sky Is Clear
Min: 47°F
Max: 66°F
Moderate breeze: 14 mps ENE
Precip.: n/a
Humidity: 32%
Cloud cover: 1%

More about 78235

About 78235

The ZIP code 78235 is associated with the city of San Antonio in Bexar County in Texas.

78235 Solar Power

78235 Solar Energy & Power

To learn more about solar energy and solar power in 78235, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.

Did you know?

Solar power is renewable, does not produce any pollutants and is one of the cleanest source of energy.

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References

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