Solar Energy & Solar Power Resources

Solar Power in 77491 (Katy, TX)

Solar Energy in 77491

Sorry, historical solar radition values for 77491 are currently unavailable, please check back later.

Solar Panels in 77491

Solar panels in 77491 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 77491

The total length of the day in 77491 (Katy, TX) today (May 11, 2025) will be 13 hours and 37 minutes. [More]

Solar Energy in 77491 (Katy, TX)

Solar Energy Data for 77491

See the chart below to see how different types of solar panel installations compare in 77491.

Historical solar power output data for Katy is not currently available.

Solar Energy Analysis for 77491

Sorry, it is not possible to complete our solar energy analysis for 77491 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 77491

Solar Radiation Data in 77491

See the chart below for monthly solar radiation levels in 77491.

Sorry, data is not currently available.

Solar Radiation Analysis for 77491

Sorry, it is not possible to complete our solar radiation analysis for 77491 at this time.

Historical solar radiation data for 77491 is not currently available.

Please check back later.

Solar Power Comparison: 77491 vs. the U.S.

Solar Power Levels in 77491

Sorry, solar radiation data for 77491 is not currently available.

Solar Power: 77491 vs. the U.S.

Below is a month-by-month comparison of how average 77491 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 77491

Sunrise / Sunset in 77491

Sunrise/Sunset for May 11, 2025 ^[2]
- Sunrise: 6:31 am
- Sunset: 8:08 pm
- Length of Day: 13:37

Best Months for Solar in 77491

Monthly data not currently available.

Solar Panel Installs in 77491

We do not have data on solar panel installations in ZIP Code 77491 at the current time.

Solar Power Output in 77491

The Power of Solar in 77491

Monthly AC solar system output averages for 77491. Month-by-month solar power, as ranked by AC output, in 77491. ^[2]

AC output data is not currently available.

Solar Output Analysis for 77491

Sorry, it is not possible to complete our solar radiation analysis for 77491 at this time.

Historical solar radiation data for 77491 is not currently available.

Please check back later.

Weather Forecast for 77491 ^[5]

Sun May 11

74°F

Broken Clouds
Min: 63°F
Max: 79°F

Moderate breeze: 16 mps NNW
Precip.: n/a
Humidity: 49%
Cloud cover: 78%

Mon May 12

79°F

Sky Is Clear
Min: 55°F
Max: 84°F

Gentle Breeze: 10 mps WNW
Precip.: n/a
Humidity: 46%
Cloud cover: 0%

Tue May 13

91°F

Sky Is Clear
Min: 64°F
Max: 93°F

Moderate breeze: 18 mps S
Precip.: n/a
Humidity: 38%
Cloud cover: 2%

Wed May 14

94°F

Broken Clouds
Min: 72°F
Max: 95°F

Moderate breeze: 16 mps SSW
Precip.: n/a
Humidity: 35%
Cloud cover: 84%

Thu May 15

96°F

Sky Is Clear
Min: 70°F
Max: 96°F

Fresh Breeze: 18 mps S
Precip.: n/a
Humidity: 32%
Cloud cover: 8%

Fri May 16

95°F

Few Clouds
Min: 74°F
Max: 96°F

Moderate breeze: 17 mps S
Precip.: n/a
Humidity: 34%
Cloud cover: 13%

More about 77491

About 77491

The ZIP code 77491 is associated with the city of Katy in Harris County in Texas.

77491 Solar Energy & Power

To learn more about solar energy and solar power in 77491, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.