The month of April has the highest historical solar radition values in San Francisco with an average of 6.62 kWh/m2/day. [More]
Solar Panels in San Francisco
Solar panels in San Francisco that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]
Sunrise & Sunset in San Francisco
The total length of the day in San Francisco, CA today (April 19, 2024) will be 13 hours and 24 minutes. [More]
Solar Power in San Francisco, CA
Solar Energy Data in San Francisco, CA
See the chart below to see how different types of solar panel installations compare in San Francisco.
Based on historical San Francisco, CA data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in San Francisco.[1]
San Francisco has an average monthly Global Horizontal Irradiance (GHI) of 4.35 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 7% greater than the average monthly Direct Normal Irradiance (DNI) of 4.05 kWh/m2/day. [1]
Solar installations in San Francisco that are always titled at the latitude of San Francisco (Average Tilt at Latitude or ATaL) average 4.96 kWh/m2/day, or about 14% greater than the average monthly GHI of 4.35 kWh/m2/day and approximately 22% greater than the average monthly DNI of 4.05 kWh/m2/day. [1]
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 San Francisco
Solar Radiation Data in San Francisco, CA
See the chart below for monthly solar radiation levels in San Francisco.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for San Francisco, CA
San Francisco, CA has a average annual solar radiation value of 5.68 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in San Francisco is April with an average of 6.62 kWh/m2/day, followed by June at 6.56 kWh/m2/day and May at 6.45 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in San Francisco (California) are December with an average of 3.95 kWh/m2/day, followed by January with an average of 4.5 kWh/m2/day and February at 4.66 kWh/m2/day. [1]
Solar Power Comparison: San Francisco vs. the U.S.
Solar Power Levels in San Francisco
The average monthly solar radiation level in San Francisco, CA, of 5.68 kilowatt hours per square meter per day (kWh/m2/day) is approximately 45% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 14% less than the average level of 6.61 kWh/m2/day in a city with historically high levels (NV). [1]
→ Values listed as 0 (zero) are not available (N/A).
Solar Power: San Francisco vs. the U.S.
Below is a month-by-month comparison of how average San Francisco solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). [1]
→ k/m/d = kWh/m2/day = kilowatt hours per square meter per day.
→ Values listed as 0 (zero) are not available (N/A).
We do not currently have data on solar panel installations in the city of San Francisco, CA at this current time.
Solar Power Output in San Francisco
The Power of Solar in San Francisco, CA
Monthly AC solar system output averages for San Francisco (ca). Month-by-month solar power, as ranked by AC output, in San Francisco. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for San Francisco, CA
San Francisco (CA) has a average annual solar AC output value of 6373.33 kilowatt hours (AC). [2]
The month with the highest historical solar power output in San Francisco is May with an average of 614.74 kWhac, followed by April at 614.2 kWhac and July at 596.87 kWhac. [2]
The three months that historically average the lowest average solar output levels in San Francisco (California) are December with an average of 389.27 kWhac, followed by February with an average of 414.27 kWhac and January at 438.88 kWhac. [2]
Cost of Utilities in San Francisco
San Francisco Electricity Costs
Sorry, San Francisco residential electricity prices are currently unavailable.
Please check back later.
Solar Power Poll: San Francisco
Vote now: Given all of the data and analysis provided for San Francisco, is solar power a good choice for residents of this city?
San Francisco Natural Gas Costs
Sorry, California residential natural gas prices are currently unavailable.
Fresh Breeze: 20 mps W
Precip.: Chance of Rain
Humidity: 62%
Cloud cover: 64%
More about San Francisco
About San Francisco
The city of San Francisco, CA in San Francisco County has an approximate population of 805,235. [6]
San Francisco, CA Solar Energy
To learn more about solar energy and solar power San Francisco, CA, or for more solar-related resources for San Francisco, visit the U.S. Energy Information Administration.
Did you know?
Various missions to space by different countries are known to utilize solar energy as a main power source.
