Solar Energy & Solar Power Resources

Solar Power in 78291 (San Antonio, TX)

Solar Energy in 78291

Sorry, historical solar radition values for 78291 are currently unavailable, please check back later.

Solar Panels in 78291

Solar panels in 78291 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 78291

The total length of the day in 78291 (San Antonio, TX) today (September 04, 2026) will be 12 hours and 42 minutes. [More]

Solar Energy in 78291 (San Antonio, TX)

Solar Energy Data for 78291

See the chart below to see how different types of solar panel installations compare in 78291.

Historical solar power output data for San Antonio is not currently available.

Solar Energy Analysis for 78291

Sorry, it is not possible to complete our solar energy analysis for 78291 at this time.

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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 78291

Solar Radiation Data in 78291

See the chart below for monthly solar radiation levels in 78291.

Sorry, data is not currently available.

Solar Radiation Analysis for 78291

Sorry, it is not possible to complete our solar radiation analysis for 78291 at this time.

Historical solar radiation data for 78291 is not currently available.

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Solar Power Comparison: 78291 vs. the U.S.

Solar Power Levels in 78291

Sorry, solar radiation data for 78291 is not currently available.

Solar Power: 78291 vs. the U.S.

Below is a month-by-month comparison of how average 78291 solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). ^[1]

Sorry, solar radiation data for Texas is not currently available.

Solar Data & Statistics for 78291

Sunrise / Sunset in 78291

Sunrise/Sunset for September 04, 2026 ^[2]
- Sunrise: 7:11 am
- Sunset: 7:53 pm
- Length of Day: 12:42

Best Months for Solar in 78291

Monthly data not currently available.

Solar Panel Installs in 78291

We do not have data on solar panel installations in ZIP Code 78291 at the current time.

Solar Power Output in 78291

The Power of Solar in 78291

Monthly AC solar system output averages for 78291. Month-by-month solar power, as ranked by AC output, in 78291. ^[2]

AC output data is not currently available.

Solar Output Analysis for 78291

Sorry, it is not possible to complete our solar radiation analysis for 78291 at this time.

Historical solar radiation data for 78291 is not currently available.

Please check back later.

Weather Forecast for 78291 ^[5]

Fri Sep 4

93°F

Light Rain
Min: 79°F
Max: 93°F

Moderate breeze: 13 mps E
Precip.: Chance of Rain
Humidity: 36%
Cloud cover: 76%

Sat Sep 5

93°F

Moderate Rain
Min: 76°F
Max: 93°F

Gentle Breeze: 10 mps ESE
Precip.: Chance of Rain
Humidity: 43%
Cloud cover: 36%

Sun Sep 6

94°F

Few Clouds
Min: 75°F
Max: 98°F

Moderate breeze: 13 mps SSE
Precip.: n/a
Humidity: 40%
Cloud cover: 24%

Mon Sep 7

95°F

Sky Is Clear
Min: 77°F
Max: 100°F

Moderate breeze: 15 mps SSE
Precip.: n/a
Humidity: 35%
Cloud cover: 0%

Tue Sep 8

96°F

Light Rain
Min: 77°F
Max: 97°F

Moderate breeze: 14 mps SSE
Precip.: Chance of Rain
Humidity: 36%
Cloud cover: 0%

Wed Sep 9

95°F

Light Rain
Min: 77°F
Max: 100°F

Gentle Breeze: 11 mps SSE
Precip.: Chance of Rain
Humidity: 38%
Cloud cover: 16%

More about 78291

About 78291

The ZIP code 78291 is associated with the city of San Antonio in Bexar County in Texas.

78291 Solar Energy & Power

To learn more about solar energy and solar power in 78291, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.