Solar Energy & Solar Power Resources

Solar Power in 94140 (San Francisco, CA)

Solar Energy in 94140

Sorry, historical solar radition values for 94140 are currently unavailable, please check back later.

Solar Panels in 94140

Solar panels in 94140 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 94140

The total length of the day in 94140 (San Francisco, CA) today (July 27, 2025) will be 14 hours and 16 minutes. [More]

Solar Energy in 94140 (San Francisco, CA)

Solar Energy Data for 94140

See the chart below to see how different types of solar panel installations compare in 94140.

Historical solar power output data for San Francisco is not currently available.

Solar Energy Analysis for 94140

Sorry, it is not possible to complete our solar energy analysis for 94140 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 94140

Solar Radiation Data in 94140

See the chart below for monthly solar radiation levels in 94140.

Sorry, data is not currently available.

Solar Radiation Analysis for 94140

Sorry, it is not possible to complete our solar radiation analysis for 94140 at this time.

Historical solar radiation data for 94140 is not currently available.

Please check back later.

Solar Power Comparison: 94140 vs. the U.S.

Solar Power Levels in 94140

Sorry, solar radiation data for 94140 is not currently available.

Solar Power: 94140 vs. the U.S.

Below is a month-by-month comparison of how average 94140 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 94140

Sunrise / Sunset in 94140

Sunrise/Sunset for July 27, 2025 ^[2]
- Sunrise: 6:08 am
- Sunset: 8:24 pm
- Length of Day: 14:16

Best Months for Solar in 94140

Monthly data not currently available.

Solar Panel Installs in 94140

We do not have data on solar panel installations in ZIP Code 94140 at the current time.

Solar Power Output in 94140

The Power of Solar in 94140

Monthly AC solar system output averages for 94140. Month-by-month solar power, as ranked by AC output, in 94140. ^[2]

AC output data is not currently available.

Solar Output Analysis for 94140

Sorry, it is not possible to complete our solar radiation analysis for 94140 at this time.

Historical solar radiation data for 94140 is not currently available.

Please check back later.

Weather Forecast for 94140 ^[5]

Sun Jul 27

69°F

Broken Clouds
Min: 57°F
Max: 71°F

Moderate breeze: 16 mps W
Precip.: n/a
Humidity: 76%
Cloud cover: 62%

Mon Jul 28

63°F

Sky Is Clear
Min: 58°F
Max: 64°F

Moderate breeze: 15 mps WSW
Precip.: n/a
Humidity: 75%
Cloud cover: 10%

Tue Jul 29

64°F

Scattered Clouds
Min: 58°F
Max: 64°F

Moderate breeze: 15 mps WSW
Precip.: n/a
Humidity: 71%
Cloud cover: 37%

Wed Jul 30

63°F

Few Clouds
Min: 59°F
Max: 63°F

Moderate breeze: 15 mps WSW
Precip.: n/a
Humidity: 74%
Cloud cover: 19%

Thu Jul 31

66°F

Light Rain
Min: 59°F
Max: 66°F

Moderate breeze: 15 mps WSW
Precip.: Chance of Rain
Humidity: 68%
Cloud cover: 7%

Fri Aug 1

64°F

Few Clouds
Min: 59°F
Max: 64°F

Moderate breeze: 16 mps WSW
Precip.: n/a
Humidity: 75%
Cloud cover: 22%

More about 94140

About 94140

The ZIP code 94140 is associated with the city of San Francisco in City and County of San Francisco County in California.

94140 Solar Energy & Power

To learn more about solar energy and solar power in 94140, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.