Solar Energy & Solar Power Resources

Solar Power in 78657 (Horseshoe Bay, TX)

Solar Energy in 78657

Sorry, historical solar radition values for 78657 are currently unavailable, please check back later.

Solar Panels in 78657

Solar panels in 78657 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 78657

The total length of the day in 78657 (Horseshoe Bay, TX) today (January 15, 2026) will be 10 hours and 27 minutes. [More]

Solar Energy in 78657 (Horseshoe Bay, TX)

Solar Energy Data for 78657

See the chart below to see how different types of solar panel installations compare in 78657.

Historical solar power output data for Horseshoe Bay is not currently available.

Solar Energy Analysis for 78657

Sorry, it is not possible to complete our solar energy analysis for 78657 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 78657

Solar Radiation Data in 78657

See the chart below for monthly solar radiation levels in 78657.

Sorry, data is not currently available.

Solar Radiation Analysis for 78657

Sorry, it is not possible to complete our solar radiation analysis for 78657 at this time.

Historical solar radiation data for 78657 is not currently available.

Please check back later.

Solar Power Comparison: 78657 vs. the U.S.

Solar Power Levels in 78657

Sorry, solar radiation data for 78657 is not currently available.

Solar Power: 78657 vs. the U.S.

Below is a month-by-month comparison of how average 78657 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 78657

Sunrise / Sunset in 78657

Sunrise/Sunset for January 15, 2026 ^[2]
- Sunrise: 7:29 am
- Sunset: 5:56 pm
- Length of Day: 10:27

Best Months for Solar in 78657

Monthly data not currently available.

Solar Panel Installs in 78657

We do not have data on solar panel installations in ZIP Code 78657 at the current time.

Solar Power Output in 78657

The Power of Solar in 78657

Monthly AC solar system output averages for 78657. Month-by-month solar power, as ranked by AC output, in 78657. ^[2]

AC output data is not currently available.

Solar Output Analysis for 78657

Sorry, it is not possible to complete our solar radiation analysis for 78657 at this time.

Historical solar radiation data for 78657 is not currently available.

Please check back later.

Weather Forecast for 78657 ^[5]

Thu Jan 15

59°F

Sky Is Clear
Min: 33°F
Max: 65°F

Moderate breeze: 14 mps SSW
Precip.: n/a
Humidity: 34%
Cloud cover: 1%

Fri Jan 16

68°F

Few Clouds
Min: 46°F
Max: 68°F

Fresh Breeze: 19 mps NNE
Precip.: n/a
Humidity: 25%
Cloud cover: 19%

Sat Jan 17

47°F

Overcast Clouds
Min: 33°F
Max: 47°F

Fresh Breeze: 21 mps NNE
Precip.: n/a
Humidity: 26%
Cloud cover: 90%

Sun Jan 18

53°F

Sky Is Clear
Min: 29°F
Max: 61°F

Gentle Breeze: 10 mps S
Precip.: n/a
Humidity: 29%
Cloud cover: 3%

Mon Jan 19

59°F

Overcast Clouds
Min: 39°F
Max: 64°F

Gentle Breeze: 10 mps S
Precip.: n/a
Humidity: 40%
Cloud cover: 97%

Tue Jan 20

53°F

Overcast Clouds
Min: 47°F
Max: 57°F

Gentle Breeze: 10 mps NE
Precip.: n/a
Humidity: 58%
Cloud cover: 100%

More about 78657

About 78657

The ZIP code 78657 is associated with the city of Horseshoe Bay in Llano County in Texas.

78657 Solar Energy & Power

To learn more about solar energy and solar power in 78657, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.