Delaware Electricity Prices

Delaware sits mid-pack — 19.38¢ per kilowatt-hour in May 2026, 19th-highest of 51 and 0.2% below the national benchmark.

At Delaware's May 2026 average of 19.38¢/kWh, 10,500 kWh of annual use works out to $2,035 a year — around $170 a month. That lands within $3 a year of the same calculation run at the May 2026 national benchmark rate.

Over the full EIA series the Delaware jurisdiction average has risen 155% since January 2001, from 7.61¢ to 19.38¢ in May 2026 — a compound 3.8% per year. Delaware is among the most month-to-month variable third of jurisdictions.

Yes. The May 2026 average of 19.38¢ per kilowatt-hour is the highest monthly figure Delaware has recorded across the EIA series, which begins in January 2001. The previous floor for the jurisdiction was 7.61¢ in January 2001.

October. Measured over the 25 complete calendar years the EIA series covers for Delaware, 2001 through 2025, October runs highest relative to its own year and January runs lowest — a swing of roughly 15.3 percentage points.

Among Delaware and its land-border neighbours in May 2026, Delaware posts the lowest average at 19.38¢ and New Jersey the highest at 23.27¢. That makes Delaware the cheapest in the group, at 19.38¢.

Almost certainly not exactly, and this is the one caveat that governs every figure on this page. The published value is the EIA residential average across every utility and residential rate class in Delaware for May 2026 — a benchmark, never a billed amount. Even the jurisdiction figure is not one number — across the trailing year it moved between 16.27¢ in February 2026 and 19.38¢ in May 2026. Your own rate depends on your utility, tariff, usage tier, time-of-use schedule, and fixed monthly charges, none of which this index models. Read your bill for the rate that applies to you.