Based on historical Napavine, WA data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Napavine.[1]
Napavine has an average monthly Global Horizontal Irradiance (GHI) of 3.37 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 7% greater than the average monthly Direct Normal Irradiance (DNI) of 3.15 kWh/m2/day. [1]
Solar installations in Napavine that are always titled at the latitude of Napavine (Average Tilt at Latitude or ATaL) average 3.86 kWh/m2/day, or about 15% greater than the average monthly GHI of 3.37 kWh/m2/day and approximately 23% greater than the average monthly DNI of 3.15 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 Napavine
Solar Radiation Data in Napavine, WA
See the chart below for monthly solar radiation levels in Napavine.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Napavine, WA
Napavine, WA has a average annual solar radiation value of 3.86 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Napavine is August with an average of 5.89 kWh/m2/day, followed by July at 5.76 kWh/m2/day and June at 5.27 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Napavine (Washington) are January with an average of 1.73 kWh/m2/day, followed by December with an average of 1.78 kWh/m2/day and November at 1.79 kWh/m2/day. [1]
Solar Power Comparison: Napavine vs. the U.S.
Solar Power Levels in Napavine
The average monthly solar radiation level in Napavine, WA, of 3.86 kilowatt hours per square meter per day (kWh/m2/day) is approximately 2% less than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 42% 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: Napavine vs. the U.S.
Below is a month-by-month comparison of how average Napavine 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 Napavine, WA at this current time.
Solar Power Output in Napavine
The Power of Solar in Napavine, WA
Monthly AC solar system output averages for Napavine (wa). Month-by-month solar power, as ranked by AC output, in Napavine. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Napavine, WA
Napavine (WA) has a average annual solar AC output value of 4332.43 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Napavine is August with an average of 538.69 kWhac, followed by July at 531.05 kWhac and June at 477.27 kWhac. [2]
The three months that historically average the lowest average solar output levels in Napavine (Washington) are November with an average of 173.17 kWhac, followed by January with an average of 173.58 kWhac and December at 178.65 kWhac. [2]
Cost of Utilities in Napavine
Napavine Electricity Costs
Sorry, Napavine residential electricity prices are currently unavailable.
Please check back later.
Solar Power Poll: Napavine
Vote now: Given all of the data and analysis provided for Napavine, is solar power a good choice for residents of this city?
Napavine Natural Gas Costs
Sorry, Washington residential natural gas prices are currently unavailable.
The city of Napavine, WA in Lewis County has an approximate population of 1,766. [6]
Napavine, WA Solar Energy
To learn more about solar energy and solar power Napavine, WA, or for more solar-related resources for Napavine, visit 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.