Solar Energy & Solar Power Resources

Solar Power in 94139 (San Francisco, CA)

Solar Energy in 94139

Sorry, historical solar radition values for 94139 are currently unavailable, please check back later.

Solar Panels in 94139

Solar panels in 94139 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 94139

The total length of the day in 94139 (San Francisco, CA) today (April 13, 2026) will be 13 hours and 9 minutes. [More]

Solar Energy in 94139 (San Francisco, CA)

Solar Energy Data for 94139

See the chart below to see how different types of solar panel installations compare in 94139.

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

Solar Energy Analysis for 94139

Sorry, it is not possible to complete our solar energy analysis for 94139 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 94139

Solar Radiation Data in 94139

See the chart below for monthly solar radiation levels in 94139.

Sorry, data is not currently available.

Solar Radiation Analysis for 94139

Sorry, it is not possible to complete our solar radiation analysis for 94139 at this time.

Historical solar radiation data for 94139 is not currently available.

Please check back later.

Solar Power Comparison: 94139 vs. the U.S.

Solar Power Levels in 94139

Sorry, solar radiation data for 94139 is not currently available.

Solar Power: 94139 vs. the U.S.

Below is a month-by-month comparison of how average 94139 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 94139

Sunrise / Sunset in 94139

Sunrise/Sunset for April 13, 2026 ^[2]
- Sunrise: 6:35 am
- Sunset: 7:44 pm
- Length of Day: 13:9

Best Months for Solar in 94139

Monthly data not currently available.

Solar Panel Installs in 94139

We do not have data on solar panel installations in ZIP Code 94139 at the current time.

Solar Power Output in 94139

The Power of Solar in 94139

Monthly AC solar system output averages for 94139. Month-by-month solar power, as ranked by AC output, in 94139. ^[2]

AC output data is not currently available.

Solar Output Analysis for 94139

Sorry, it is not possible to complete our solar radiation analysis for 94139 at this time.

Historical solar radiation data for 94139 is not currently available.

Please check back later.

Weather Forecast for 94139 ^[5]

Mon Apr 13

60°F

Light Rain
Min: 47°F
Max: 60°F

Moderate breeze: 15 mps WNW
Precip.: Chance of Rain
Humidity: 62%
Cloud cover: 9%

Tue Apr 14

56°F

Scattered Clouds
Min: 51°F
Max: 57°F

Moderate breeze: 17 mps WNW
Precip.: n/a
Humidity: 66%
Cloud cover: 32%

Wed Apr 15

58°F

Light Rain
Min: 51°F
Max: 58°F

Moderate breeze: 17 mps W
Precip.: Chance of Rain
Humidity: 64%
Cloud cover: 89%

Thu Apr 16

58°F

Sky Is Clear
Min: 48°F
Max: 59°F

Moderate breeze: 16 mps WNW
Precip.: n/a
Humidity: 41%
Cloud cover: 0%

Fri Apr 17

60°F

Overcast Clouds
Min: 52°F
Max: 60°F

Gentle Breeze: 11 mps W
Precip.: n/a
Humidity: 44%
Cloud cover: 94%

Sat Apr 18

58°F

Broken Clouds
Min: 53°F
Max: 58°F

Moderate breeze: 14 mps W
Precip.: n/a
Humidity: 57%
Cloud cover: 62%

More about 94139

About 94139

The ZIP code 94139 is associated with the city of San Francisco in City and County of San Francisco County in California.

94139 Solar Energy & Power

To learn more about solar energy and solar power in 94139, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.