Solar Energy & Solar Power Resources

Solar Power in 94621 (Oakland, CA)

Solar Energy in 94621

Sorry, historical solar radition values for 94621 are currently unavailable, please check back later.

Solar Panels in 94621

Solar panels in 94621 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 94621

The total length of the day in 94621 (Oakland, CA) today (September 24, 2026) will be 12 hours and 6 minutes. [More]

Solar Energy in 94621 (Oakland, CA)

Solar Energy Data for 94621

See the chart below to see how different types of solar panel installations compare in 94621.

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

Solar Energy Analysis for 94621

Sorry, it is not possible to complete our solar energy analysis for 94621 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 94621

Solar Radiation Data in 94621

See the chart below for monthly solar radiation levels in 94621.

Sorry, data is not currently available.

Solar Radiation Analysis for 94621

Sorry, it is not possible to complete our solar radiation analysis for 94621 at this time.

Historical solar radiation data for 94621 is not currently available.

Please check back later.

Solar Power Comparison: 94621 vs. the U.S.

Solar Power Levels in 94621

Sorry, solar radiation data for 94621 is not currently available.

Solar Power: 94621 vs. the U.S.

Below is a month-by-month comparison of how average 94621 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 94621

Sunrise / Sunset in 94621

Sunrise/Sunset for September 24, 2026 ^[2]
- Sunrise: 6:57 am
- Sunset: 7:03 pm
- Length of Day: 12:6

Best Months for Solar in 94621

Monthly data not currently available.

Solar Panel Installs in 94621

We do not have data on solar panel installations in ZIP Code 94621 at the current time.

Solar Power Output in 94621

The Power of Solar in 94621

Monthly AC solar system output averages for 94621. Month-by-month solar power, as ranked by AC output, in 94621. ^[2]

AC output data is not currently available.

Solar Output Analysis for 94621

Sorry, it is not possible to complete our solar radiation analysis for 94621 at this time.

Historical solar radiation data for 94621 is not currently available.

Please check back later.

Weather Forecast for 94621 ^[5]

Thu Sep 24

87°F

Overcast Clouds
Min: 60°F
Max: 88°F

Gentle Breeze: 8 mps WSW
Precip.: n/a
Humidity: 39%
Cloud cover: 93%

Fri Sep 25

81°F

Few Clouds
Min: 57°F
Max: 83°F

Gentle Breeze: 10 mps WSW
Precip.: n/a
Humidity: 56%
Cloud cover: 11%

Sat Sep 26

68°F

Sky Is Clear
Min: 54°F
Max: 69°F

Gentle Breeze: 9 mps WSW
Precip.: n/a
Humidity: 57%
Cloud cover: 7%

Sun Sep 27

63°F

Scattered Clouds
Min: 55°F
Max: 64°F

Gentle Breeze: 11 mps WSW
Precip.: n/a
Humidity: 67%
Cloud cover: 46%

Mon Sep 28

64°F

Sky Is Clear
Min: 55°F
Max: 71°F

Gentle Breeze: 8 mps W
Precip.: n/a
Humidity: 65%
Cloud cover: 0%

Tue Sep 29

72°F

Sky Is Clear
Min: 54°F
Max: 78°F

Light breeze: 7 mps W
Precip.: n/a
Humidity: 50%
Cloud cover: 2%

More about 94621

About 94621

The ZIP code 94621 is associated with the city of Oakland in Alameda County in California.

94621 Solar Energy & Power

To learn more about solar energy and solar power in 94621, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.