Electricity rates in 19899 — Wilmington, DE
Homes in ZIP 19899 pay about 19.1¢ per kWh (Delmarva Power, Jan–Aug 2026). The Delaware average is 18.7¢ and the U.S. average 18.2¢ (Aug 2026).
What a month of electricity costs
Monthly cost at the average price of 19.1¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.
Where ZIP 19899 is
scroll or pinch to zoomUtilities serving 19899
| Utility | Home price | Avg. bill | Customers in DE |
|---|---|---|---|
| Delmarva Power Investor Owned | 19.1¢ Jan–Aug 2026 | $152 | 301,950 |
| City of Newark (DE) Municipal · serves New Castle | 21.9¢ Jan–Aug 2026 | $132 | 11,888 |
| Town of Middletown (DE) Municipal · serves New Castle | 17.1¢ 2024 | $158 | 9,071 |
| Town of Smyrna (DE) Municipal · serves New Castle | 15.2¢ 2024 | $217 | 6,478 |
| New Castle Municipal Serv Comm Municipal · serves New Castle | 13.9¢ 2024 | $298 | 2,924 |
Utilities are matched to this ZIP code by NREL’s ZIP–utility table and the EIA service-territory list for New Castle; county matches may serve only part of the area. Prices are each utility’s average residential revenue per kWh.
Delaware price trend
Hover or tap the chart for exact monthly values. Source: EIA-861M (monthly, latest months preliminary); forecast: EIA Short-Term Energy Outlook (October 2026) for the South Atlantic region, which includes Delaware, District of Columbia, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, West Virginia.
Averages, not a quote. Prices here are what each utility’s residential customers paid on average (revenue ÷ kWh sold, fixed charges included), as reported to the U.S. Energy Information Administration. Your own rate depends on your plan, season and usage — check your bill or your utility’s tariff.
Questions about 19899
How much does electricity cost in 19899?
About 19.1¢ per kWh for homes (Delmarva Power, Jan–Aug 2026, EIA). At 900 kWh a month that is roughly $172.
Who is the electric utility for 19899?
Delmarva Power, with about 301,950 residential customers in Delaware; 4 other utilities also serve parts of the area.
Is electricity in DE getting more expensive?
The Delaware residential average was 18.7¢ per kWh in August 2026, up 11% from a year earlier; the U.S. average was 18.2¢.