Based on historical 99401 data, solar panels that always track the sun throughout the day will produce the maximum solar energy output in 99401.[1]
The region associated with 99401 has an average monthly Global Horizontal Irradiance (GHI) of 4.08 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 17% less than the average monthly Direct Normal Irradiance (DNI) of 4.94 kWh/m2/day. [1]
Solar installations in 99401 that are always titled at the latitude of Anatone (Average Tilt at Latitude or ATaL) average 4.84 kWh/m2/day, or about 19% greater than the average monthly GHI of 4.08 kWh/m2/day and approximately 2% less than the average monthly DNI of 4.94 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 99401
Solar Radiation Data in 99401
See the chart below for monthly solar radiation levels in 99401.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for 99401
The region associated with 99401 has a average annual solar radiation value of 4.93 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 99401 is July with an average of 7.25 kWh/m2/day, followed by August at 7.07 kWh/m2/day and May at 6.37 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 99401 are December with an average of 2.09 kWh/m2/day, followed by January with an average of 2.46 kWh/m2/day and November at 3.06 kWh/m2/day. [1]
Solar Power Comparison: 99401 vs. the U.S.
Solar Power Levels in 99401
The average monthly solar radiation level in 99401, of 4.93 kilowatt hours per square meter per day (kWh/m2/day) is approximately 25% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 25% 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: 99401 vs. the U.S.
Below is a month-by-month comparison of how average 99401 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 99401 at the current time.
Solar Power Output in 99401
The Power of Solar in 99401
Monthly AC solar system output averages for 99401. Month-by-month solar power, as ranked by AC output, in 99401. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for 99401
99401 has a average annual solar AC output value of 5560.4 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 99401 is July with an average of 662.72 kWhac, followed by August at 637.28 kWhac and May at 607.52 kWhac. [2]
The three months that historically average the lowest average solar output levels in 99401 are December with an average of 214.39 kWhac, followed by January with an average of 251.71 kWhac and November at 300.39 kWhac. [2]
The ZIP code 99401 is associated with the city of Anatone in Asotin County in Washington.
99401 Solar Energy & Power
To learn more about solar energy and solar power in 99401, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.
Did you know?
About half of the sun's energy is absorbed by the Earth's surface; about 30 percent is reflected back from the surface.