Solar Energy & Solar Power Resources

Solar Power in 98121 (Seattle, WA)

Solar Energy in 98121

Sorry, historical solar radition values for 98121 are currently unavailable, please check back later.

Solar Panels in 98121

Solar panels in 98121 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 98121

The total length of the day in 98121 (Seattle, WA) today (June 29, 2026) will be 16 hours and 1 minutes. [More]

Solar Energy in 98121 (Seattle, WA)

Solar Energy Data for 98121

See the chart below to see how different types of solar panel installations compare in 98121.

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

Solar Energy Analysis for 98121

Sorry, it is not possible to complete our solar energy analysis for 98121 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 98121

Solar Radiation Data in 98121

See the chart below for monthly solar radiation levels in 98121.

Sorry, data is not currently available.

Solar Radiation Analysis for 98121

Sorry, it is not possible to complete our solar radiation analysis for 98121 at this time.

Historical solar radiation data for 98121 is not currently available.

Please check back later.

Solar Power Comparison: 98121 vs. the U.S.

Solar Power Levels in 98121

Sorry, solar radiation data for 98121 is not currently available.

Solar Power: 98121 vs. the U.S.

Below is a month-by-month comparison of how average 98121 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 Washington is not currently available.

Solar Data & Statistics for 98121

Sunrise / Sunset in 98121

Sunrise/Sunset for June 29, 2026 ^[2]
- Sunrise: 5:12 am
- Sunset: 9:13 pm
- Length of Day: 16:1

Best Months for Solar in 98121

Monthly data not currently available.

Solar Panel Installs in 98121

We do not have data on solar panel installations in ZIP Code 98121 at the current time.

Solar Power Output in 98121

The Power of Solar in 98121

Monthly AC solar system output averages for 98121. Month-by-month solar power, as ranked by AC output, in 98121. ^[2]

AC output data is not currently available.

Solar Output Analysis for 98121

Sorry, it is not possible to complete our solar radiation analysis for 98121 at this time.

Historical solar radiation data for 98121 is not currently available.

Please check back later.

Weather Forecast for 98121 ^[5]

Sun Jun 28

64°F

Overcast Clouds
Min: 55°F
Max: 66°F

Light breeze: 7 mps S
Precip.: n/a
Humidity: 72%
Cloud cover: 95%

Mon Jun 29

63°F

Overcast Clouds
Min: 58°F
Max: 72°F

Light breeze: 6 mps SE
Precip.: n/a
Humidity: 65%
Cloud cover: 100%

Tue Jun 30

67°F

Overcast Clouds
Min: 58°F
Max: 74°F

Light breeze: 7 mps SSW
Precip.: n/a
Humidity: 51%
Cloud cover: 94%

Wed Jul 1

62°F

Overcast Clouds
Min: 52°F
Max: 66°F

Gentle Breeze: 9 mps S
Precip.: n/a
Humidity: 57%
Cloud cover: 100%

Thu Jul 2

65°F

Overcast Clouds
Min: 52°F
Max: 65°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 56%
Cloud cover: 98%

Fri Jul 3

69°F

Light Rain
Min: 54°F
Max: 71°F

Light breeze: 5 mps N
Precip.: Chance of Rain
Humidity: 59%
Cloud cover: 83%

More about 98121

About 98121

The ZIP code 98121 is associated with the city of Seattle in King County in Washington.

98121 Solar Energy & Power

To learn more about solar energy and solar power in 98121, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.