See the chart below to see how different types of solar panel installations compare in Downey.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Downey, 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 Downey. [1]
Downey has an average monthly Global Horizontal Irradiance (GHI) of 5.23 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 5% less than the average monthly Direct Normal Irradiance (DNI) of 5.53 kWh/m2/day. [1]
Solar installations in Downey that are always titled at the latitude of Downey (Average Tilt at Latitude or ATaL) average 5.96 kWh/m2/day, or about 14% greater than the average monthly GHI of 5.23 kWh/m2/day and approximately 8% greater than the average monthly DNI of 5.53 kWh/m2/day. [1]
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: 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: 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.
See the chart below for monthly solar radiation levels in Downey.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Downey, CA has a average annual solar radiation value of 6.16 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Downey is August with an average of 7.1 kWh/m2/day, followed by September at 6.83 kWh/m2/day and July at 6.51 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Downey (California) are December with an average of 5.29 kWh/m2/day, followed by January with an average of 5.4 kWh/m2/day and February at 5.73 kWh/m2/day. [1]
The average monthly solar radiation level in Downey, CA, of 6.16 kilowatt hours per square meter per day (kWh/m2/day) is approximately 57% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 7% 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).
Below is a month-by-month comparison of how average Downey 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 Downey, CA at this current time.
Monthly AC solar system output averages for Downey (ca). Month-by-month solar power, as ranked by AC output, in Downey. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Downey (CA) has a average annual solar AC output value of 6755.01 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Downey is August with an average of 640.94 kWhac, followed by March at 609.62 kWhac and September at 602.75 kWhac. [2]
The three months that historically average the lowest average solar output levels in Downey (California) are February with an average of 491.91 kWhac, followed by December with an average of 502.74 kWhac and January at 516.72 kWhac. [2]
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Vote now: Given all of the data and analysis provided for Downey, is solar power a good choice for residents of this city?
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The city of Downey, CA in Los Angeles County has an approximate population of 111,772. [6]
To learn more about solar energy and solar power Downey, CA, or for more solar-related resources for Downey, visit the U.S. Energy Information Administration.
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