Solar Energy & Solar Power Resources

Solar Power in 99115 (Coulee City, WA)

Solar Energy in 99115

Sorry, historical solar radition values for 99115 are currently unavailable, please check back later.

Solar Panels in 99115

Solar panels in 99115 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 99115

The total length of the day in 99115 (Coulee City, WA) today (July 24, 2026) will be 15 hours and 20 minutes. [More]

Solar Energy in 99115 (Coulee City, WA)

Solar Energy Data for 99115

See the chart below to see how different types of solar panel installations compare in 99115.

Historical solar power output data for Coulee City is not currently available.

Solar Energy Analysis for 99115

Sorry, it is not possible to complete our solar energy analysis for 99115 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 99115

Solar Radiation Data in 99115

See the chart below for monthly solar radiation levels in 99115.

Sorry, data is not currently available.

Solar Radiation Analysis for 99115

Sorry, it is not possible to complete our solar radiation analysis for 99115 at this time.

Historical solar radiation data for 99115 is not currently available.

Please check back later.

Solar Power Comparison: 99115 vs. the U.S.

Solar Power Levels in 99115

Sorry, solar radiation data for 99115 is not currently available.

Solar Power: 99115 vs. the U.S.

Below is a month-by-month comparison of how average 99115 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 99115

Sunrise / Sunset in 99115

Sunrise/Sunset for July 24, 2026 ^[2]
- Sunrise: 5:23 am
- Sunset: 8:43 pm
- Length of Day: 15:20

Best Months for Solar in 99115

Monthly data not currently available.

Solar Panel Installs in 99115

We do not have data on solar panel installations in ZIP Code 99115 at the current time.

Solar Power Output in 99115

The Power of Solar in 99115

Monthly AC solar system output averages for 99115. Month-by-month solar power, as ranked by AC output, in 99115. ^[2]

AC output data is not currently available.

Solar Output Analysis for 99115

Sorry, it is not possible to complete our solar radiation analysis for 99115 at this time.

Historical solar radiation data for 99115 is not currently available.

Please check back later.

Weather Forecast for 99115 ^[5]

Fri Jul 24

89°F

Sky Is Clear
Min: 63°F
Max: 93°F

Moderate breeze: 17 mps SSW
Precip.: n/a
Humidity: 22%
Cloud cover: 0%

Sat Jul 25

85°F

Sky Is Clear
Min: 62°F
Max: 87°F

Strong breeze: 28 mps SSW
Precip.: n/a
Humidity: 15%
Cloud cover: 0%

Sun Jul 26

81°F

Sky Is Clear
Min: 58°F
Max: 88°F

Moderate breeze: 13 mps SSW
Precip.: n/a
Humidity: 25%
Cloud cover: 0%

Mon Jul 27

85°F

Sky Is Clear
Min: 60°F
Max: 88°F

Gentle Breeze: 11 mps WSW
Precip.: n/a
Humidity: 18%
Cloud cover: 0%

Tue Jul 28

89°F

Scattered Clouds
Min: 60°F
Max: 91°F

Moderate breeze: 16 mps S
Precip.: n/a
Humidity: 15%
Cloud cover: 35%

Wed Jul 29

84°F

Sky Is Clear
Min: 60°F
Max: 86°F

Gentle Breeze: 11 mps W
Precip.: n/a
Humidity: 17%
Cloud cover: 2%

More about 99115

About 99115

The ZIP code 99115 is associated with the city of Coulee City in Grant County in Washington.

99115 Solar Energy & Power

To learn more about solar energy and solar power in 99115, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.