Solar Energy & Solar Power Resources

Solar Power in 78121 (La Vernia, TX)

Solar Energy in 78121

Sorry, historical solar radition values for 78121 are currently unavailable, please check back later.

Solar Panels in 78121

Solar panels in 78121 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 78121

The total length of the day in 78121 (La Vernia, TX) today (September 21, 2026) will be 12 hours and 12 minutes. [More]

Solar Energy in 78121 (La Vernia, TX)

Solar Energy Data for 78121

See the chart below to see how different types of solar panel installations compare in 78121.

Historical solar power output data for La Vernia is not currently available.

Solar Energy Analysis for 78121

Sorry, it is not possible to complete our solar energy analysis for 78121 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 78121

Solar Radiation Data in 78121

See the chart below for monthly solar radiation levels in 78121.

Sorry, data is not currently available.

Solar Radiation Analysis for 78121

Sorry, it is not possible to complete our solar radiation analysis for 78121 at this time.

Historical solar radiation data for 78121 is not currently available.

Please check back later.

Solar Power Comparison: 78121 vs. the U.S.

Solar Power Levels in 78121

Sorry, solar radiation data for 78121 is not currently available.

Solar Power: 78121 vs. the U.S.

Below is a month-by-month comparison of how average 78121 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 78121

Sunrise / Sunset in 78121

Sunrise/Sunset for September 21, 2026 ^[2]
- Sunrise: 7:19 am
- Sunset: 7:31 pm
- Length of Day: 12:12

Best Months for Solar in 78121

Monthly data not currently available.

Solar Panel Installs in 78121

We do not have data on solar panel installations in ZIP Code 78121 at the current time.

Solar Power Output in 78121

The Power of Solar in 78121

Monthly AC solar system output averages for 78121. Month-by-month solar power, as ranked by AC output, in 78121. ^[2]

AC output data is not currently available.

Solar Output Analysis for 78121

Sorry, it is not possible to complete our solar radiation analysis for 78121 at this time.

Historical solar radiation data for 78121 is not currently available.

Please check back later.

Weather Forecast for 78121 ^[5]

Mon Sep 21

90°F

Light Rain
Min: 76°F
Max: 97°F

Gentle Breeze: 11 mps ESE
Precip.: Chance of Rain
Humidity: 61%
Cloud cover: 26%

Tue Sep 22

96°F

Sky Is Clear
Min: 75°F
Max: 100°F

Moderate breeze: 12 mps SE
Precip.: n/a
Humidity: 41%
Cloud cover: 3%

Wed Sep 23

94°F

Light Rain
Min: 76°F
Max: 97°F

Moderate breeze: 14 mps ESE
Precip.: Chance of Rain
Humidity: 40%
Cloud cover: 23%

Thu Sep 24

94°F

Overcast Clouds
Min: 76°F
Max: 97°F

Gentle Breeze: 10 mps SSE
Precip.: n/a
Humidity: 39%
Cloud cover: 98%

Fri Sep 25

94°F

Scattered Clouds
Min: 75°F
Max: 98°F

Gentle Breeze: 10 mps SSE
Precip.: n/a
Humidity: 33%
Cloud cover: 33%

Sat Sep 26

93°F

Overcast Clouds
Min: 75°F
Max: 97°F

Gentle Breeze: 12 mps SE
Precip.: n/a
Humidity: 36%
Cloud cover: 95%

More about 78121

About 78121

The ZIP code 78121 is associated with the city of La Vernia in Wilson County in Texas.

78121 Solar Energy & Power

To learn more about solar energy and solar power in 78121, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.