See the chart below to see how different types of solar panel installations compare in 91021.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical 91021 data, solar panels that always track the sun throughout the day will produce the maximum solar energy output in 91021. [1]
The region associated with 91021 has an average monthly Global Horizontal Irradiance (GHI) of 5.39 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 16% less than the average monthly Direct Normal Irradiance (DNI) of 6.42 kWh/m2/day. [1]
Solar installations in 91021 that are always titled at the latitude of Montrose (Average Tilt at Latitude or ATaL) average 6.16 kWh/m2/day, or about 14% greater than the average monthly GHI of 5.39 kWh/m2/day and approximately 4% less than the average monthly DNI of 6.42 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 91021.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
The region associated with 91021 has a average annual solar radiation value of 6.19 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 91021 is August with an average of 7.23 kWh/m2/day, followed by September at 7.14 kWh/m2/day and July at 6.82 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 91021 are December with an average of 4.9 kWh/m2/day, followed by January with an average of 5.46 kWh/m2/day and February at 5.49 kWh/m2/day. [1]
The average monthly solar radiation level in 91021, of 6.19 kilowatt hours per square meter per day (kWh/m2/day) is approximately 58% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 6% 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 91021 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 have data on solar panel installations in ZIP Code 91021 at the current time.
Monthly AC solar system output averages for 91021. Month-by-month solar power, as ranked by AC output, in 91021. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
91021 has a average annual solar AC output value of 6797.48 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 91021 is August with an average of 653.4 kWhac, followed by September at 629.07 kWhac and July at 624.79 kWhac. [2]
The three months that historically average the lowest average solar output levels in 91021 are February with an average of 471.75 kWhac, followed by December with an average of 476.68 kWhac and November at 521.05 kWhac. [2]
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The ZIP code 91021 is associated with the city of Montrose in Los Angeles County in California.
To learn more about solar energy and solar power in 91021, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.
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