Based on historical 20640 data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in 20640.[1]
The region associated with 20640 has an average monthly Global Horizontal Irradiance (GHI) of 4.19 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 1% less than the average monthly Direct Normal Irradiance (DNI) of 4.22 kWh/m2/day. [1]
Solar installations in 20640 that are always titled at the latitude of Indian Head (Average Tilt at Latitude or ATaL) average 4.89 kWh/m2/day, or about 17% greater than the average monthly GHI of 4.19 kWh/m2/day and approximately 16% greater than the average monthly DNI of 4.22 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 20640
Solar Radiation Data in 20640
See the chart below for monthly solar radiation levels in 20640.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for 20640
The region associated with 20640 has a average annual solar radiation value of 4.97 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in 20640 is July with an average of 5.64 kWh/m2/day, followed by August at 5.61 kWh/m2/day and June at 5.57 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in 20640 are December with an average of 3.77 kWh/m2/day, followed by January with an average of 4.03 kWh/m2/day and November at 4.17 kWh/m2/day. [1]
Solar Power Comparison: 20640 vs. the U.S.
Solar Power Levels in 20640
The average monthly solar radiation level in 20640, of 4.97 kilowatt hours per square meter per day (kWh/m2/day) is approximately 26% 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: 20640 vs. the U.S.
Below is a month-by-month comparison of how average 20640 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 20640 at the current time.
Solar Power Output in 20640
The Power of Solar in 20640
Monthly AC solar system output averages for 20640. Month-by-month solar power, as ranked by AC output, in 20640. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for 20640
20640 has a average annual solar AC output value of 5539.79 kilowatt hours (AC). [2]
The month with the highest historical solar power output in 20640 is July with an average of 511.64 kWhac, followed by August at 505.38 kWhac and March at 505.17 kWhac. [2]
The three months that historically average the lowest average solar output levels in 20640 are December with an average of 375.68 kWhac, followed by November with an average of 388.83 kWhac and January at 409.48 kWhac. [2]
The ZIP code 20640 is associated with the city of Indian Head in Charles County in Maryland.
20640 Solar Energy & Power
To learn more about solar energy and solar power in 20640, or for more solar-related resources for MD, check out the U.S. Energy Information Administration.
Did you know?
Solar cells convert sunlight into electricity through a physical process known as the photovoltaic effect.