Solar Energy & Solar Power Resources

Solar Energy in Federal Way, WA

Solar Energy in Federal Way

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

Solar Panels in Federal Way

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

Sunrise & Sunset in Federal Way

The total length of the day in Federal Way, WA today (October 21, 2026) will be 10 hours and 34 minutes. [More]

Solar Power in Federal Way, WA

Solar Energy Data in Federal Way, WA

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

Historical solar power output data for Federal Way is not currently available.

Solar Energy Analysis for Federal Way, WA

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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 Federal Way

Solar Radiation Data in Federal Way, WA

See the chart below for monthly solar radiation levels in Federal Way.

Sorry, data is not currently available.

Solar Radiation Analysis for Federal Way, WA

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

Historical solar radiation data for Federal Way is not currently available.

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Solar Power Comparison: Federal Way vs. the U.S.

Solar Power Levels in Federal Way

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

Solar Power: Federal Way vs. the U.S.

Below is a month-by-month comparison of how average Federal Way 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 Federal Way

Sunrise / Sunset in Federal Way

Sunrise/Sunset for October 21, 2026 ^[2]
- Sunrise: 7:36 am
- Sunset: 6:10 pm
- Length of Day: 10:34

Best Months for Solar in Federal Way

Monthly data not currently available.

Solar Panel Installs in Federal Way

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

Solar Power Output in Federal Way

The Power of Solar in Federal Way, WA

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

AC output data is not currently available.

Solar Output Analysis for Federal Way, WA

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

Historical solar radiation data for Federal Way is not currently available.

Please check back later.

Cost of Utilities in Federal Way

Federal Way Electricity Costs

Sorry, Federal Way residential electricity prices are currently unavailable.

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Solar Power Poll: Federal Way

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

Federal Way Natural Gas Costs

Sorry, Washington residential natural gas prices are currently unavailable.

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Weather Forecast for Federal Way, WA ^[5]

Wed Oct 21

60°F

Few Clouds
Min: 40°F
Max: 65°F

Light breeze: 4 mps SE
Precip.: n/a
Humidity: 76%
Cloud cover: 15%

Thu Oct 22

56°F

Few Clouds
Min: 42°F
Max: 60°F

Gentle Breeze: 9 mps N
Precip.: n/a
Humidity: 62%
Cloud cover: 19%

Fri Oct 23

52°F

Scattered Clouds
Min: 39°F
Max: 55°F

Light breeze: 7 mps NNW
Precip.: n/a
Humidity: 66%
Cloud cover: 49%

Sat Oct 24

49°F

Overcast Clouds
Min: 35°F
Max: 53°F

Light breeze: 6 mps N
Precip.: n/a
Humidity: 68%
Cloud cover: 99%

Sun Oct 25

49°F

Scattered Clouds
Min: 40°F
Max: 58°F

Light breeze: 5 mps NNE
Precip.: n/a
Humidity: 68%
Cloud cover: 41%

Mon Oct 26

51°F

Overcast Clouds
Min: 43°F
Max: 58°F

Light breeze: 4 mps NE
Precip.: n/a
Humidity: 62%
Cloud cover: 99%

More about Federal Way

About Federal Way

The city of Federal Way, WA in King County has an approximate population of 89,306. ^[6]

Federal Way, WA Solar Energy

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