Solar Energy & Solar Power Resources

Solar Power in 99204 (Spokane, WA)

Solar Energy in 99204

Sorry, historical solar radition values for 99204 are currently unavailable, please check back later.

Solar Panels in 99204

Solar panels in 99204 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 99204

The total length of the day in 99204 (Spokane, WA) today (August 17, 2026) will be 14 hours and 13 minutes. [More]

Solar Energy in 99204 (Spokane, WA)

Solar Energy Data for 99204

See the chart below to see how different types of solar panel installations compare in 99204.

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

Solar Energy Analysis for 99204

Sorry, it is not possible to complete our solar energy analysis for 99204 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 99204

Solar Radiation Data in 99204

See the chart below for monthly solar radiation levels in 99204.

Sorry, data is not currently available.

Solar Radiation Analysis for 99204

Sorry, it is not possible to complete our solar radiation analysis for 99204 at this time.

Historical solar radiation data for 99204 is not currently available.

Please check back later.

Solar Power Comparison: 99204 vs. the U.S.

Solar Power Levels in 99204

Sorry, solar radiation data for 99204 is not currently available.

Solar Power: 99204 vs. the U.S.

Below is a month-by-month comparison of how average 99204 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 99204

Sunrise / Sunset in 99204

Sunrise/Sunset for August 17, 2026 ^[2]
- Sunrise: 5:47 am
- Sunset: 8:00 pm
- Length of Day: 14:13

Best Months for Solar in 99204

Monthly data not currently available.

Solar Panel Installs in 99204

We do not have data on solar panel installations in ZIP Code 99204 at the current time.

Solar Power Output in 99204

The Power of Solar in 99204

Monthly AC solar system output averages for 99204. Month-by-month solar power, as ranked by AC output, in 99204. ^[2]

AC output data is not currently available.

Solar Output Analysis for 99204

Sorry, it is not possible to complete our solar radiation analysis for 99204 at this time.

Historical solar radiation data for 99204 is not currently available.

Please check back later.

Weather Forecast for 99204 ^[5]

Mon Aug 17

87°F

Broken Clouds
Min: 60°F
Max: 93°F

Gentle Breeze: 8 mps WSW
Precip.: n/a
Humidity: 24%
Cloud cover: 79%

Tue Aug 18

86°F

Overcast Clouds
Min: 58°F
Max: 90°F

Gentle Breeze: 11 mps SW
Precip.: n/a
Humidity: 21%
Cloud cover: 93%

Wed Aug 19

83°F

Sky Is Clear
Min: 64°F
Max: 87°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 25%
Cloud cover: 5%

Thu Aug 20

86°F

Sky Is Clear
Min: 68°F
Max: 94°F

Light breeze: 6 mps SW
Precip.: n/a
Humidity: 22%
Cloud cover: 7%

Fri Aug 21

86°F

Overcast Clouds
Min: 70°F
Max: 97°F

Light breeze: 4 mps ENE
Precip.: n/a
Humidity: 19%
Cloud cover: 100%

Sat Aug 22

86°F

Light Rain
Min: 70°F
Max: 93°F

Moderate breeze: 13 mps SW
Precip.: Chance of Rain
Humidity: 23%
Cloud cover: 66%

More about 99204

About 99204

The ZIP code 99204 is associated with the city of Spokane in Spokane County in Washington.

99204 Solar Energy & Power

To learn more about solar energy and solar power in 99204, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.