Residential electricity prices in 19891 in March 2026 averaged approximately 17.64 cents per kilowatthour (¢/kWh), which was about INF% more than the national average rate of ¢/kWh (March 2026). [1]
→ Electricity rates listed as zero are not currently available.
See how electricity costs in 19891 differ from the average electricity costs for the U.S. overall. [1]
On a year-over-year basis - from February 2025 to February 2026 - residential electricity prices in 19891 increased approximately 4%, from 15.65 ¢/kWh to 16.27 ¢/kWh. [1]
→ Electricity rates listed as zero are not currently available.
Residential natural gas prices in 19891 in March 2026 averaged 17.14 dollars per thousand cubic feet ($/Mcf), which was approximately INF% more than the national average rate of $/Mcf (March 2026). [2]
→ Natural gas prices listed as zero are not currently available.
See the chart below to see a comparison of Wilmington natural gas prices against U.S. average prices. Compare 19891 (Wilmington, DE) natural gas costs to overall U.S. average costs. [2]
On a year-over-year basis, residential natural gas prices in Wilmington (Delaware) increased approximately 27%, from 12.71 $/Mcf (February 2025) to 16.15 $/Mcf (February 2026). [2]
→ Natural gas prices listed as zero are not currently available.
Sorry, 19891 solar data is not currently available. Please check back later.
See the chart below for a comparison of Wilmington solar radiation levels against other areas in the U.S. Compare Wilmington levels against both 1) low average solar radition levels (WA) and also 2) high average solar radiation levels (NV). [3]
→ k/m/d: kilowatt hours per square meter per day.
→ Solar radiation values listed as zero are not currently available.
Households in the United States have benefited from falling energy prices in recent years, which has driven down the cost of living.
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Penn State researchers recently examined microgrids and discovered that they may not always be a wise economic move for communities.
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Through the analysis of publicly available data filed by electricity suppliers, the CT OCC discovered that electricity customers overpaid by $58 million in 2015.
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The ZIP code 19891 is associated with the city of Wilmington, DE in New Castle County. [4]
To learn more about utility rates & usage in 19891, or for other information related to utilities in Delaware, visit the U.S. Energy Information Administration.
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