Solar Energy & Solar Power Resources

Solar Power in 94558 (Napa, CA)

Solar Energy in 94558

Sorry, historical solar radition values for 94558 are currently unavailable, please check back later.

Solar Panels in 94558

Solar panels in 94558 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 94558

The total length of the day in 94558 (Napa, CA) today (July 09, 2026) will be 14 hours and 45 minutes. [More]

Solar Energy in 94558 (Napa, CA)

Solar Energy Data for 94558

See the chart below to see how different types of solar panel installations compare in 94558.

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

Solar Energy Analysis for 94558

Sorry, it is not possible to complete our solar energy analysis for 94558 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 94558

Solar Radiation Data in 94558

See the chart below for monthly solar radiation levels in 94558.

Sorry, data is not currently available.

Solar Radiation Analysis for 94558

Sorry, it is not possible to complete our solar radiation analysis for 94558 at this time.

Historical solar radiation data for 94558 is not currently available.

Please check back later.

Solar Power Comparison: 94558 vs. the U.S.

Solar Power Levels in 94558

Sorry, solar radiation data for 94558 is not currently available.

Solar Power: 94558 vs. the U.S.

Below is a month-by-month comparison of how average 94558 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 California is not currently available.

Solar Data & Statistics for 94558

Sunrise / Sunset in 94558

Sunrise/Sunset for July 09, 2026 ^[2]
- Sunrise: 5:51 am
- Sunset: 8:36 pm
- Length of Day: 14:45

Best Months for Solar in 94558

Monthly data not currently available.

Solar Panel Installs in 94558

We do not have data on solar panel installations in ZIP Code 94558 at the current time.

Solar Power Output in 94558

The Power of Solar in 94558

Monthly AC solar system output averages for 94558. Month-by-month solar power, as ranked by AC output, in 94558. ^[2]

AC output data is not currently available.

Solar Output Analysis for 94558

Sorry, it is not possible to complete our solar radiation analysis for 94558 at this time.

Historical solar radiation data for 94558 is not currently available.

Please check back later.

Weather Forecast for 94558 ^[5]

Thu Jul 9

78°F

Sky Is Clear
Min: 47°F
Max: 80°F

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

Fri Jul 10

76°F

Sky Is Clear
Min: 52°F
Max: 84°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 24%
Cloud cover: 0%

Sat Jul 11

94°F

Scattered Clouds
Min: 50°F
Max: 94°F

Gentle Breeze: 10 mps SW
Precip.: n/a
Humidity: 13%
Cloud cover: 25%

Sun Jul 12

93°F

Broken Clouds
Min: 56°F
Max: 93°F

Gentle Breeze: 10 mps SW
Precip.: n/a
Humidity: 15%
Cloud cover: 79%

Mon Jul 13

97°F

Sky Is Clear
Min: 60°F
Max: 97°F

Gentle Breeze: 11 mps SW
Precip.: n/a
Humidity: 11%
Cloud cover: 9%

Tue Jul 14

99°F

Sky Is Clear
Min: 58°F
Max: 99°F

Gentle Breeze: 10 mps SW
Precip.: n/a
Humidity: 9%
Cloud cover: 0%

More about 94558

About 94558

The ZIP code 94558 is associated with the city of Napa in Napa County in California.

94558 Solar Energy & Power

To learn more about solar energy and solar power in 94558, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.