Solar Energy & Solar Power Resources

Solar Power in 77221 (Houston, TX)

Solar Energy in 77221

Sorry, historical solar radition values for 77221 are currently unavailable, please check back later.

Solar Panels in 77221

Solar panels in 77221 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 77221

The total length of the day in 77221 (Houston, TX) today (January 02, 2025) will be 10 hours and 19 minutes. [More]

Solar Energy in 77221 (Houston, TX)

Solar Energy Data for 77221

See the chart below to see how different types of solar panel installations compare in 77221.

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

Solar Energy Analysis for 77221

Sorry, it is not possible to complete our solar energy analysis for 77221 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 77221

Solar Radiation Data in 77221

See the chart below for monthly solar radiation levels in 77221.

Sorry, data is not currently available.

Solar Radiation Analysis for 77221

Sorry, it is not possible to complete our solar radiation analysis for 77221 at this time.

Historical solar radiation data for 77221 is not currently available.

Please check back later.

Solar Power Comparison: 77221 vs. the U.S.

Solar Power Levels in 77221

Sorry, solar radiation data for 77221 is not currently available.

Solar Power: 77221 vs. the U.S.

Below is a month-by-month comparison of how average 77221 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 77221

Sunrise / Sunset in 77221

Sunrise/Sunset for January 02, 2025 ^[2]
- Sunrise: 7:16 am
- Sunset: 5:35 pm
- Length of Day: 10:19

Best Months for Solar in 77221

Monthly data not currently available.

Solar Panel Installs in 77221

We do not have data on solar panel installations in ZIP Code 77221 at the current time.

Solar Power Output in 77221

The Power of Solar in 77221

Monthly AC solar system output averages for 77221. Month-by-month solar power, as ranked by AC output, in 77221. ^[2]

AC output data is not currently available.

Solar Output Analysis for 77221

Sorry, it is not possible to complete our solar radiation analysis for 77221 at this time.

Historical solar radiation data for 77221 is not currently available.

Please check back later.

Weather Forecast for 77221 ^[5]

Thu Jan 2

60°F

Light Rain
Min: 56°F
Max: 63°F

Light breeze: 7 mps ESE
Precip.: Chance of Rain
Humidity: 58%
Cloud cover: 87%

Fri Jan 3

64°F

Light Rain
Min: 60°F
Max: 67°F

Gentle Breeze: 9 mps ENE
Precip.: Chance of Rain
Humidity: 72%
Cloud cover: 88%

Sat Jan 4

70°F

Light Rain
Min: 60°F
Max: 72°F

Gentle Breeze: 11 mps S
Precip.: Chance of Rain
Humidity: 74%
Cloud cover: 88%

Sun Jan 5

75°F

Moderate Rain
Min: 54°F
Max: 75°F

Moderate breeze: 17 mps NNW
Precip.: Chance of Rain
Humidity: 70%
Cloud cover: 83%

Mon Jan 6

45°F

Sky Is Clear
Min: 38°F
Max: 50°F

Moderate breeze: 17 mps NNW
Precip.: n/a
Humidity: 27%
Cloud cover: 0%

Tue Jan 7

46°F

Few Clouds
Min: 39°F
Max: 51°F

Gentle Breeze: 10 mps NNE
Precip.: n/a
Humidity: 27%
Cloud cover: 14%

More about 77221

About 77221

The ZIP code 77221 is associated with the city of Houston in Harris County in Texas.

77221 Solar Energy & Power

To learn more about solar energy and solar power in 77221, or for more solar-related resources for TX, check out the U.S. Energy Information Administration.