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Solar Energy in Seatac, WA

Solar Energy in Seatac

The month of July has the highest historical solar radition values in Seatac with an average of 6.28 kWh/m2/day. [More]

Solar Panels in Seatac

Solar panels in Seatac that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in Seatac

The total length of the day in Seatac, WA today (March 28, 2024) will be 12 hours and 40 minutes. [More]

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Seatac, WA Solar Energy

Solar Power in Seatac, WA

Solar Energy Data in Seatac, WA

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

* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.


Solar Energy Analysis for Seatac, WA

Solar Radiation Data in Seatac

Based on historical Seatac, WA data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Seatac. [1]

Seatac has an average monthly Global Horizontal Irradiance (GHI) of 3.45 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 4% greater than the average monthly Direct Normal Irradiance (DNI) of 3.33 kWh/m2/day. [1]

Solar installations in Seatac that are always titled at the latitude of Seatac (Average Tilt at Latitude or ATaL) average 3.95 kWh/m2/day, or about 14% greater than the average monthly GHI of 3.45 kWh/m2/day and approximately 19% greater than the average monthly DNI of 3.33 kWh/m2/day. [1]

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 Seatac

Solar Radiation Data in Seatac, WA

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

* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)

Solar Radiation Analysis for Seatac, WA

Solar Radiation Data in Seatac

Seatac, WA has a average annual solar radiation value of 4.11 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in Seatac is July with an average of 6.28 kWh/m2/day, followed by August at 6.24 kWh/m2/day and June at 5.64 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Seatac (Washington) are December with an average of 1.51 kWh/m2/day, followed by January with an average of 1.87 kWh/m2/day and November at 2.21 kWh/m2/day. [1]

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

Solar Power Levels in Seatac

The average monthly solar radiation level in Seatac, WA, of 4.11 kilowatt hours per square meter per day (kWh/m2/day) is approximately 5% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 38% less than the average level of 6.61 kWh/m2/day in a city with historically high levels (NV). [1]


→ Values listed as 0 (zero) are not available (N/A).

Solar Power: Seatac vs. the U.S.

Below is a month-by-month comparison of how average Seatac solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). [1]

→ k/m/d = kWh/m2/day = kilowatt hours per square meter per day.
→ Values listed as 0 (zero) are not available (N/A).

Solar Data & Statistics for Seatac

Sunrise / Sunset in Seatac

  • Sunrise/Sunset for March 28, 2024 [2]
    • Sunrise: 6:54 am
    • Sunset: 7:34 pm
    • Length of Day: 12:40
Solar Energy Statistics for Seatac

Best Months for Solar in Seatac

  • Top Solar Power Months Historically [1]
    • Solar Radiation July (6.28 kWh/m2/day)
    • ATaL: July (6.01 kWh/m2/day)
    • DNI: July (6.25 kWh/m2/day)
    • GHI: July (6.37 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Seatac

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

Solar Power Output in Seatac

The Power of Solar in Seatac, WA

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

* Amounts listed in kWhac (kilowatt hours (AC))

Solar Output Analysis for Seatac, WA

Solar Radiation Data in Seatac

Seatac (WA) has a average annual solar AC output value of 4576.27 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Seatac is July with an average of 571.92 kWhac, followed by August at 570.31 kWhac and June at 508.94 kWhac. [2]

The three months that historically average the lowest average solar output levels in Seatac (Washington) are December with an average of 154 kWhac, followed by January with an average of 184.99 kWhac and November at 212.3 kWhac. [2]

Cost of Utilities in Seatac

Seatac Electricity Costs

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Solar Power Poll: Seatac

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Seatac Natural Gas Costs

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Weather Forecast for Seatac, WA [5]

Thu Mar 28
49°F
Moderate Rain
Min: 41°F
Max: 49°F
Gentle Breeze: 8 mps SSW
Precip.: Chance of Rain
Humidity: 64%
Cloud cover: 100%
Fri Mar 29
54°F
Light Rain
Min: 40°F
Max: 56°F
Gentle Breeze: 10 mps N
Precip.: Chance of Rain
Humidity: 49%
Cloud cover: 95%
Sat Mar 30
56°F
Scattered Clouds
Min: 37°F
Max: 58°F
Light breeze: 6 mps N
Precip.: n/a
Humidity: 49%
Cloud cover: 47%
Sun Mar 31
58°F
Sky Is Clear
Min: 39°F
Max: 58°F
Light breeze: 7 mps N
Precip.: n/a
Humidity: 44%
Cloud cover: 7%
Mon Apr 1
62°F
Overcast Clouds
Min: 41°F
Max: 63°F
Light breeze: 4 mps SSW
Precip.: n/a
Humidity: 44%
Cloud cover: 92%
Tue Apr 2
64°F
Light Rain
Min: 45°F
Max: 65°F
Moderate breeze: 13 mps SSW
Precip.: Chance of Rain
Humidity: 51%
Cloud cover: 93%

More about Seatac

About Seatac

The city of Seatac, WA in King County has an approximate population of 26,909. [6]

Seatac Solar Power

Seatac, WA Solar Energy

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

Did you know?

Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.

Other Cities in Washington

ZIP Codes in WA


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References

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