Solar Energy & Solar Power Resources

Solar Energy in Seattle, WA

Solar Energy in Seattle

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

Solar Panels in Seattle

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

Sunrise & Sunset in Seattle

The total length of the day in Seattle, WA today (October 21, 2026) will be 10 hours and 33 minutes. [More]

Solar Power in Seattle, WA

Solar Energy Data in Seattle, WA

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

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

Solar Energy Analysis for Seattle, WA

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

Solar Radiation Data in Seattle, WA

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

Sorry, data is not currently available.

Solar Radiation Analysis for Seattle, WA

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

Historical solar radiation data for Seattle is not currently available.

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

Solar Power Levels in Seattle

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

Solar Power: Seattle vs. the U.S.

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

Sunrise / Sunset in Seattle

Sunrise/Sunset for October 21, 2026 ^[2]
- Sunrise: 7:37 am
- Sunset: 6:10 pm
- Length of Day: 10:33

Best Months for Solar in Seattle

Monthly data not currently available.

Solar Panel Installs in Seattle

We do not currently have data on solar panel installations in the city of Seattle, WA at this current time.

Solar Power Output in Seattle

The Power of Solar in Seattle, WA

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

AC output data is not currently available.

Solar Output Analysis for Seattle, WA

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

Historical solar radiation data for Seattle is not currently available.

Please check back later.

Cost of Utilities in Seattle

Seattle Electricity Costs

Sorry, Seattle residential electricity prices are currently unavailable.

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Solar Power Poll: Seattle

Vote now: Given all of the data and analysis provided for Seattle, is solar power a good choice for residents of this city?

Seattle Natural Gas Costs

Sorry, Washington residential natural gas prices are currently unavailable.

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Weather Forecast for Seattle, WA ^[5]

Wed Oct 21

60°F

Sky Is Clear
Min: 41°F
Max: 64°F

Light breeze: 6 mps NNE
Precip.: n/a
Humidity: 77%
Cloud cover: 8%

Thu Oct 22

57°F

Scattered Clouds
Min: 44°F
Max: 60°F

Gentle Breeze: 10 mps N
Precip.: n/a
Humidity: 67%
Cloud cover: 31%

Fri Oct 23

54°F

Broken Clouds
Min: 41°F
Max: 57°F

Light breeze: 6 mps WNW
Precip.: n/a
Humidity: 65%
Cloud cover: 75%

Sat Oct 24

49°F

Overcast Clouds
Min: 41°F
Max: 53°F

Light breeze: 6 mps N
Precip.: n/a
Humidity: 82%
Cloud cover: 99%

Sun Oct 25

50°F

Broken Clouds
Min: 47°F
Max: 58°F

Light breeze: 6 mps NNW
Precip.: n/a
Humidity: 86%
Cloud cover: 60%

Mon Oct 26

51°F

Overcast Clouds
Min: 44°F
Max: 59°F

Light breeze: 6 mps NNW
Precip.: n/a
Humidity: 73%
Cloud cover: 99%

More about Seattle

About Seattle

The city of Seattle, WA in King County has an approximate population of 608,660. ^[6]

Seattle, WA Solar Energy

To learn more about solar energy and solar power Seattle, WA, or for more solar-related resources for Seattle, visit the U.S. Energy Information Administration.