Solar Energy & Solar Power Resources

Solar Power in 99201 (Spokane, WA)

Solar Energy in 99201

Sorry, historical solar radition values for 99201 are currently unavailable, please check back later.

Solar Panels in 99201

Solar panels in 99201 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 99201

The total length of the day in 99201 (Spokane, WA) today (September 28, 2026) will be 11 hours and 53 minutes. [More]

Solar Energy in 99201 (Spokane, WA)

Solar Energy Data for 99201

See the chart below to see how different types of solar panel installations compare in 99201.

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

Solar Energy Analysis for 99201

Sorry, it is not possible to complete our solar energy analysis for 99201 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 99201

Solar Radiation Data in 99201

See the chart below for monthly solar radiation levels in 99201.

Sorry, data is not currently available.

Solar Radiation Analysis for 99201

Sorry, it is not possible to complete our solar radiation analysis for 99201 at this time.

Historical solar radiation data for 99201 is not currently available.

Please check back later.

Solar Power Comparison: 99201 vs. the U.S.

Solar Power Levels in 99201

Sorry, solar radiation data for 99201 is not currently available.

Solar Power: 99201 vs. the U.S.

Below is a month-by-month comparison of how average 99201 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 99201

Sunrise / Sunset in 99201

Sunrise/Sunset for September 28, 2026 ^[2]
- Sunrise: 6:43 am
- Sunset: 6:36 pm
- Length of Day: 11:53

Best Months for Solar in 99201

Monthly data not currently available.

Solar Panel Installs in 99201

We do not have data on solar panel installations in ZIP Code 99201 at the current time.

Solar Power Output in 99201

The Power of Solar in 99201

Monthly AC solar system output averages for 99201. Month-by-month solar power, as ranked by AC output, in 99201. ^[2]

AC output data is not currently available.

Solar Output Analysis for 99201

Sorry, it is not possible to complete our solar radiation analysis for 99201 at this time.

Historical solar radiation data for 99201 is not currently available.

Please check back later.

Weather Forecast for 99201 ^[5]

Mon Sep 28

64°F

Sky Is Clear
Min: 36°F
Max: 68°F

Gentle Breeze: 8 mps SW
Precip.: n/a
Humidity: 42%
Cloud cover: 8%

Tue Sep 29

63°F

Overcast Clouds
Min: 44°F
Max: 66°F

Moderate breeze: 12 mps SSW
Precip.: n/a
Humidity: 40%
Cloud cover: 85%

Wed Sep 30

65°F

Broken Clouds
Min: 47°F
Max: 69°F

Light breeze: 7 mps SW
Precip.: n/a
Humidity: 45%
Cloud cover: 61%

Thu Oct 1

65°F

Broken Clouds
Min: 43°F
Max: 69°F

Calm: 3 mps NNE
Precip.: n/a
Humidity: 35%
Cloud cover: 78%

Fri Oct 2

64°F

Sky Is Clear
Min: 47°F
Max: 74°F

Calm: 1 mps NE
Precip.: n/a
Humidity: 42%
Cloud cover: 0%

Sat Oct 3

65°F

Overcast Clouds
Min: 49°F
Max: 76°F

Light breeze: 4 mps N
Precip.: n/a
Humidity: 48%
Cloud cover: 90%

More about 99201

About 99201

The ZIP code 99201 is associated with the city of Spokane in Spokane County in Washington.

99201 Solar Energy & Power

To learn more about solar energy and solar power in 99201, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.