Solar Energy & Solar Power Resources

Solar Power in 99220 (Spokane, WA)

Solar Energy in 99220

Sorry, historical solar radition values for 99220 are currently unavailable, please check back later.

Solar Panels in 99220

Solar panels in 99220 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 99220

The total length of the day in 99220 (Spokane, WA) today (April 25, 2025) will be 14 hours and 16 minutes. [More]

Solar Energy in 99220 (Spokane, WA)

Solar Energy Data for 99220

See the chart below to see how different types of solar panel installations compare in 99220.

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

Solar Energy Analysis for 99220

Sorry, it is not possible to complete our solar energy analysis for 99220 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 99220

Solar Radiation Data in 99220

See the chart below for monthly solar radiation levels in 99220.

Sorry, data is not currently available.

Solar Radiation Analysis for 99220

Sorry, it is not possible to complete our solar radiation analysis for 99220 at this time.

Historical solar radiation data for 99220 is not currently available.

Please check back later.

Solar Power Comparison: 99220 vs. the U.S.

Solar Power Levels in 99220

Sorry, solar radiation data for 99220 is not currently available.

Solar Power: 99220 vs. the U.S.

Below is a month-by-month comparison of how average 99220 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 99220

Sunrise / Sunset in 99220

Sunrise/Sunset for April 25, 2025 ^[2]
- Sunrise: 5:39 am
- Sunset: 7:55 pm
- Length of Day: 14:16

Best Months for Solar in 99220

Monthly data not currently available.

Solar Panel Installs in 99220

We do not have data on solar panel installations in ZIP Code 99220 at the current time.

Solar Power Output in 99220

The Power of Solar in 99220

Monthly AC solar system output averages for 99220. Month-by-month solar power, as ranked by AC output, in 99220. ^[2]

AC output data is not currently available.

Solar Output Analysis for 99220

Sorry, it is not possible to complete our solar radiation analysis for 99220 at this time.

Historical solar radiation data for 99220 is not currently available.

Please check back later.

Weather Forecast for 99220 ^[5]

Fri Apr 25

70°F

Few Clouds
Min: 41°F
Max: 74°F

Light breeze: 6 mps ENE
Precip.: n/a
Humidity: 24%
Cloud cover: 17%

Sat Apr 26

66°F

Overcast Clouds
Min: 44°F
Max: 69°F

Light breeze: 7 mps SSW
Precip.: n/a
Humidity: 32%
Cloud cover: 99%

Sun Apr 27

63°F

Scattered Clouds
Min: 48°F
Max: 69°F

Gentle Breeze: 9 mps WNW
Precip.: n/a
Humidity: 47%
Cloud cover: 29%

Mon Apr 28

60°F

Sky Is Clear
Min: 43°F
Max: 66°F

Gentle Breeze: 10 mps SW
Precip.: n/a
Humidity: 47%
Cloud cover: 9%

Tue Apr 29

58°F

Broken Clouds
Min: 49°F
Max: 62°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 53%
Cloud cover: 67%

Wed Apr 30

59°F

Overcast Clouds
Min: 46°F
Max: 66°F

Light breeze: 7 mps SW
Precip.: n/a
Humidity: 49%
Cloud cover: 98%

More about 99220

About 99220

The ZIP code 99220 is associated with the city of Spokane in Spokane County in Washington.

99220 Solar Energy & Power

To learn more about solar energy and solar power in 99220, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.