Solar Energy & Solar Power Resources

Solar Power in 91901 (Alpine, CA)

Solar Energy in 91901

Sorry, historical solar radition values for 91901 are currently unavailable, please check back later.

Solar Panels in 91901

Solar panels in 91901 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 91901

The total length of the day in 91901 (Alpine, CA) today (September 01, 2026) will be 12 hours and 53 minutes. [More]

Solar Energy in 91901 (Alpine, CA)

Solar Energy Data for 91901

See the chart below to see how different types of solar panel installations compare in 91901.

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

Solar Energy Analysis for 91901

Sorry, it is not possible to complete our solar energy analysis for 91901 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 91901

Solar Radiation Data in 91901

See the chart below for monthly solar radiation levels in 91901.

Sorry, data is not currently available.

Solar Radiation Analysis for 91901

Sorry, it is not possible to complete our solar radiation analysis for 91901 at this time.

Historical solar radiation data for 91901 is not currently available.

Please check back later.

Solar Power Comparison: 91901 vs. the U.S.

Solar Power Levels in 91901

Sorry, solar radiation data for 91901 is not currently available.

Solar Power: 91901 vs. the U.S.

Below is a month-by-month comparison of how average 91901 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 91901

Sunrise / Sunset in 91901

Sunrise/Sunset for September 01, 2026 ^[2]
- Sunrise: 6:20 am
- Sunset: 7:13 pm
- Length of Day: 12:53

Best Months for Solar in 91901

Monthly data not currently available.

Solar Panel Installs in 91901

We do not have data on solar panel installations in ZIP Code 91901 at the current time.

Solar Power Output in 91901

The Power of Solar in 91901

Monthly AC solar system output averages for 91901. Month-by-month solar power, as ranked by AC output, in 91901. ^[2]

AC output data is not currently available.

Solar Output Analysis for 91901

Sorry, it is not possible to complete our solar radiation analysis for 91901 at this time.

Historical solar radiation data for 91901 is not currently available.

Please check back later.

Weather Forecast for 91901 ^[5]

Tue Sep 1

81°F

Sky Is Clear
Min: 59°F
Max: 82°F

Moderate breeze: 14 mps W
Precip.: n/a
Humidity: 22%
Cloud cover: 0%

Wed Sep 2

80°F

Sky Is Clear
Min: 60°F
Max: 82°F

Moderate breeze: 15 mps W
Precip.: n/a
Humidity: 18%
Cloud cover: 0%

Thu Sep 3

79°F

Sky Is Clear
Min: 55°F
Max: 81°F

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

Fri Sep 4

77°F

Sky Is Clear
Min: 56°F
Max: 83°F

Gentle Breeze: 12 mps W
Precip.: n/a
Humidity: 30%
Cloud cover: 2%

Sat Sep 5

84°F

Light Rain
Min: 59°F
Max: 84°F

Gentle Breeze: 8 mps SW
Precip.: Chance of Rain
Humidity: 19%
Cloud cover: 3%

Sun Sep 6

86°F

Light Rain
Min: 72°F
Max: 86°F

Gentle Breeze: 12 mps WSW
Precip.: Chance of Rain
Humidity: 44%
Cloud cover: 98%

More about 91901

About 91901

The ZIP code 91901 is associated with the city of Alpine in San Diego County in California.

91901 Solar Energy & Power

To learn more about solar energy and solar power in 91901, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.