Solar Energy & Solar Power Resources

Solar Power in 99621 (Kwethluk, AK)

Solar Energy in 99621

Sorry, historical solar radition values for 99621 are currently unavailable, please check back later.

Solar Panels in 99621

Solar panels in 99621 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 99621

The total length of the day in 99621 (Kwethluk, AK) today (July 02, 2026) will be -5 hours and -53 minutes. [More]

Solar Energy in 99621 (Kwethluk, AK)

Solar Energy Data for 99621

See the chart below to see how different types of solar panel installations compare in 99621.

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

Solar Energy Analysis for 99621

Sorry, it is not possible to complete our solar energy analysis for 99621 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 99621

Solar Radiation Data in 99621

See the chart below for monthly solar radiation levels in 99621.

Sorry, data is not currently available.

Solar Radiation Analysis for 99621

Sorry, it is not possible to complete our solar radiation analysis for 99621 at this time.

Historical solar radiation data for 99621 is not currently available.

Please check back later.

Solar Power Comparison: 99621 vs. the U.S.

Solar Power Levels in 99621

Sorry, solar radiation data for 99621 is not currently available.

Solar Power: 99621 vs. the U.S.

Below is a month-by-month comparison of how average 99621 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 Alaska is not currently available.

Solar Data & Statistics for 99621

Sunrise / Sunset in 99621

Sunrise/Sunset for July 02, 2026 ^[2]
- Sunrise: 5:16 am
- Sunset: 12:23 am
- Length of Day: -5:-53

Best Months for Solar in 99621

Monthly data not currently available.

Solar Panel Installs in 99621

We do not have data on solar panel installations in ZIP Code 99621 at the current time.

Solar Power Output in 99621

The Power of Solar in 99621

Monthly AC solar system output averages for 99621. Month-by-month solar power, as ranked by AC output, in 99621. ^[2]

AC output data is not currently available.

Solar Output Analysis for 99621

Sorry, it is not possible to complete our solar radiation analysis for 99621 at this time.

Historical solar radiation data for 99621 is not currently available.

Please check back later.

Weather Forecast for 99621 ^[5]

Thu Jul 2

48°F

Light Rain
Min: 47°F
Max: 49°F

Moderate breeze: 13 mps S
Precip.: Chance of Rain
Humidity: 88%
Cloud cover: 100%

Fri Jul 3

47°F

Moderate Rain
Min: 45°F
Max: 47°F

Gentle Breeze: 12 mps S
Precip.: Chance of Rain
Humidity: 85%
Cloud cover: 100%

Sat Jul 4

54°F

Light Rain
Min: 43°F
Max: 58°F

Gentle Breeze: 11 mps N
Precip.: Chance of Rain
Humidity: 69%
Cloud cover: 98%

Sun Jul 5

61°F

Light Rain
Min: 48°F
Max: 66°F

Gentle Breeze: 9 mps SW
Precip.: Chance of Rain
Humidity: 60%
Cloud cover: 48%

Mon Jul 6

64°F

Scattered Clouds
Min: 54°F
Max: 70°F

Gentle Breeze: 8 mps SSW
Precip.: n/a
Humidity: 53%
Cloud cover: 35%

Tue Jul 7

60°F

Light Rain
Min: 51°F
Max: 62°F

Gentle Breeze: 9 mps W
Precip.: Chance of Rain
Humidity: 65%
Cloud cover: 100%

More about 99621

About 99621

The ZIP code 99621 is associated with the city of Kwethluk in Bethel Census Area County in Alaska.

99621 Solar Energy & Power

To learn more about solar energy and solar power in 99621, or for more solar-related resources for AK, check out the U.S. Energy Information Administration.