See the chart below to see how different types of solar panel installations compare in Wilmington.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.
Based on historical Wilmington, DE data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Wilmington. [1]
Wilmington has an average monthly Global Horizontal Irradiance (GHI) of 4.09 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 0% less than the average monthly Direct Normal Irradiance (DNI) of 4.11 kWh/m2/day. [1]
Solar installations in Wilmington that are always titled at the latitude of Wilmington (Average Tilt at Latitude or ATaL) average 4.81 kWh/m2/day, or about 18% greater than the average monthly GHI of 4.09 kWh/m2/day and approximately 17% greater than the average monthly DNI of 4.11 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 Wilmington.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Sorry, solar radiation data for Delaware is not currently available. Please try again later.
Below is a month-by-month comparison of how average Wilmington 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 Wilmington, DE at this current time.
However, Wilmington is in New Castle County and New Castle County has at least 0 solar insallations right now. [1]
Monthly AC solar system output averages for Wilmington (de). Month-by-month solar power, as ranked by AC output, in Wilmington. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Electricity prices (residential) in Wilmington averaged 11.99 cents per kilowatthour (¢/kWh) in February 2021, which was about 10% less than the overall U.S. average residential electricity rate of 13.34¢/kWh in February. [3]
Vote now: Given all of the data and analysis provided for Wilmington, is solar power a good choice for residents of this city?
Natural gas prices (residential) in Delaware averaged $11.19 per thousand cubic feet (Mcf) in February 2021, which was approximately 17% more than the overall U.S. average residential natural gas rate of $9.55 per Mcf in February. [4]
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The city of Wilmington, DE in New Castle County has an approximate population of 70,851. [6]
To learn more about solar energy and solar power Wilmington, DE, or for more solar-related resources for Wilmington, visit the U.S. Energy Information Administration.
Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the basis of solar energy in 1839.
