Solar Energy & Solar Power Resources

Solar Power in 77099 (Houston, TX)

Solar Energy in 77099

Sorry, historical solar radition values for 77099 are currently unavailable, please check back later.

Solar Panels in 77099

Solar panels in 77099 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 77099

The total length of the day in 77099 (Houston, TX) today (September 17, 2025) will be 12 hours and 19 minutes. [More]

Solar Energy in 77099 (Houston, TX)

Solar Energy Data for 77099

See the chart below to see how different types of solar panel installations compare in 77099.

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

Solar Energy Analysis for 77099

Sorry, it is not possible to complete our solar energy analysis for 77099 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 77099

Solar Radiation Data in 77099

See the chart below for monthly solar radiation levels in 77099.

Sorry, data is not currently available.

Solar Radiation Analysis for 77099

Sorry, it is not possible to complete our solar radiation analysis for 77099 at this time.

Historical solar radiation data for 77099 is not currently available.

Please check back later.

Solar Power Comparison: 77099 vs. the U.S.

Solar Power Levels in 77099

Sorry, solar radiation data for 77099 is not currently available.

Solar Power: 77099 vs. the U.S.

Below is a month-by-month comparison of how average 77099 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 77099

Sunrise / Sunset in 77099

Sunrise/Sunset for September 17, 2025 ^[2]
- Sunrise: 7:07 am
- Sunset: 7:26 pm
- Length of Day: 12:19

Best Months for Solar in 77099

Monthly data not currently available.

Solar Panel Installs in 77099

We do not have data on solar panel installations in ZIP Code 77099 at the current time.

Solar Power Output in 77099

The Power of Solar in 77099

Monthly AC solar system output averages for 77099. Month-by-month solar power, as ranked by AC output, in 77099. ^[2]

AC output data is not currently available.

Solar Output Analysis for 77099

Sorry, it is not possible to complete our solar radiation analysis for 77099 at this time.

Historical solar radiation data for 77099 is not currently available.

Please check back later.

Weather Forecast for 77099 ^[5]

Wed Sep 17

92°F

Light Rain
Min: 72°F
Max: 94°F

Gentle Breeze: 10 mps S
Precip.: Chance of Rain
Humidity: 36%
Cloud cover: 2%

Thu Sep 18

92°F

Moderate Rain
Min: 74°F
Max: 95°F

Moderate breeze: 14 mps SE
Precip.: Chance of Rain
Humidity: 39%
Cloud cover: 0%

Fri Sep 19

92°F

Few Clouds
Min: 74°F
Max: 94°F

Moderate breeze: 13 mps ESE
Precip.: n/a
Humidity: 31%
Cloud cover: 16%

Sat Sep 20

93°F

Scattered Clouds
Min: 75°F
Max: 93°F

Moderate breeze: 14 mps SE
Precip.: n/a
Humidity: 37%
Cloud cover: 33%

Sun Sep 21

95°F

Sky Is Clear
Min: 75°F
Max: 95°F

Moderate breeze: 14 mps SE
Precip.: n/a
Humidity: 34%
Cloud cover: 4%

Mon Sep 22

88°F

Light Rain
Min: 76°F
Max: 88°F

Moderate breeze: 13 mps SSE
Precip.: Chance of Rain
Humidity: 53%
Cloud cover: 14%

More about 77099

About 77099

The ZIP code 77099 is associated with the city of Houston in Harris County in Texas.

77099 Solar Energy & Power

To learn more about solar energy and solar power in 77099, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.