Solar Energy & Solar Power Resources

Solar Power in 78251 (San Antonio, TX)

Solar Energy in 78251

Sorry, historical solar radition values for 78251 are currently unavailable, please check back later.

Solar Panels in 78251

Solar panels in 78251 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 78251

The total length of the day in 78251 (San Antonio, TX) today (August 12, 2026) will be 13 hours and 19 minutes. [More]

Solar Energy in 78251 (San Antonio, TX)

Solar Energy Data for 78251

See the chart below to see how different types of solar panel installations compare in 78251.

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

Solar Energy Analysis for 78251

Sorry, it is not possible to complete our solar energy analysis for 78251 at this time.

Please check back later.

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 78251

Solar Radiation Data in 78251

See the chart below for monthly solar radiation levels in 78251.

Sorry, data is not currently available.

Solar Radiation Analysis for 78251

Sorry, it is not possible to complete our solar radiation analysis for 78251 at this time.

Historical solar radiation data for 78251 is not currently available.

Please check back later.

Solar Power Comparison: 78251 vs. the U.S.

Solar Power Levels in 78251

Sorry, solar radiation data for 78251 is not currently available.

Solar Power: 78251 vs. the U.S.

Below is a month-by-month comparison of how average 78251 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 78251

Sunrise / Sunset in 78251

Sunrise/Sunset for August 12, 2026 ^[2]
- Sunrise: 7:00 am
- Sunset: 8:19 pm
- Length of Day: 13:19

Best Months for Solar in 78251

Monthly data not currently available.

Solar Panel Installs in 78251

We do not have data on solar panel installations in ZIP Code 78251 at the current time.

Solar Power Output in 78251

The Power of Solar in 78251

Monthly AC solar system output averages for 78251. Month-by-month solar power, as ranked by AC output, in 78251. ^[2]

AC output data is not currently available.

Solar Output Analysis for 78251

Sorry, it is not possible to complete our solar radiation analysis for 78251 at this time.

Historical solar radiation data for 78251 is not currently available.

Please check back later.

Weather Forecast for 78251 ^[5]

Wed Aug 12

94°F

Few Clouds
Min: 78°F
Max: 102°F

Fresh Breeze: 22 mps SE
Precip.: n/a
Humidity: 35%
Cloud cover: 19%

Thu Aug 13

93°F

Few Clouds
Min: 76°F
Max: 100°F

Fresh Breeze: 21 mps SE
Precip.: n/a
Humidity: 36%
Cloud cover: 22%

Fri Aug 14

95°F

Light Rain
Min: 76°F
Max: 99°F

Moderate breeze: 17 mps SE
Precip.: Chance of Rain
Humidity: 39%
Cloud cover: 76%

Sat Aug 15

96°F

Sky Is Clear
Min: 76°F
Max: 102°F

Moderate breeze: 17 mps SSE
Precip.: n/a
Humidity: 37%
Cloud cover: 9%

Sun Aug 16

95°F

Few Clouds
Min: 74°F
Max: 101°F

Moderate breeze: 16 mps SSE
Precip.: n/a
Humidity: 36%
Cloud cover: 24%

Mon Aug 17

97°F

Sky Is Clear
Min: 75°F
Max: 101°F

Moderate breeze: 14 mps SSE
Precip.: n/a
Humidity: 30%
Cloud cover: 0%

More about 78251

About 78251

The ZIP code 78251 is associated with the city of San Antonio in Bexar County in Texas.

78251 Solar Energy & Power

To learn more about solar energy and solar power in 78251, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.