See the chart below to see how different types of solar panel installations compare in Walla Walla.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Walla Walla, WA data, solar panels that always track the sun throughout the day will produce the maximum solar energy output in Walla Walla. [1]
Walla Walla has an average monthly Global Horizontal Irradiance (GHI) of 4.12 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 15% less than the average monthly Direct Normal Irradiance (DNI) of 4.84 kWh/m2/day. [1]
Solar installations in Walla Walla that are always titled at the latitude of Walla Walla (Average Tilt at Latitude or ATaL) average 4.83 kWh/m2/day, or about 17% greater than the average monthly GHI of 4.12 kWh/m2/day and approximately 0% less than the average monthly DNI of 4.84 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 Walla Walla.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Walla Walla, WA has a average annual solar radiation value of 4.75 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Walla Walla is July with an average of 7.27 kWh/m2/day, followed by August at 7.14 kWh/m2/day and June at 6.7 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Walla Walla (Washington) are December with an average of 1.67 kWh/m2/day, followed by January with an average of 1.72 kWh/m2/day and November at 2.42 kWh/m2/day. [1]
The average monthly solar radiation level in Walla Walla, WA, of 4.75 kilowatt hours per square meter per day (kWh/m2/day) is approximately 21% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 28% 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 Walla Walla 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 Walla Walla, WA at this current time.
Monthly AC solar system output averages for Walla Walla (wa). Month-by-month solar power, as ranked by AC output, in Walla Walla. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Walla Walla (WA) has a average annual solar AC output value of 5290.23 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Walla Walla is July with an average of 650.83 kWhac, followed by August at 645.81 kWhac and June at 597.11 kWhac. [2]
The three months that historically average the lowest average solar output levels in Walla Walla (Washington) are December with an average of 170.3 kWhac, followed by January with an average of 176.51 kWhac and November at 234.29 kWhac. [2]
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The city of Walla Walla, WA in Walla Walla County has an approximate population of 31,731. [6]
To learn more about solar energy and solar power Walla Walla, WA, or for more solar-related resources for Walla Walla, visit the U.S. Energy Information Administration.
Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.
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