Delaware Electricity Rates and Average Bill
Data through August 2026 (the latest month EIA has published) · Updated October 31, 2026
As of August 2026, the average residential electricity rate in Delaware is 18.70¢/kWh (the 19th-highest in the U.S.) and the average monthly bill is $209.57, per EIA data. That rate is 0.5¢ above the U.S. average of 18.16¢/kWh.
Rate trend, last three years
View this chart as a table (last 12 months)
| Month | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) |
|---|---|---|---|
| September 2025 | 18.14 | 151.67 | 836 |
| October 2025 | 18.33 | 118.01 | 644 |
| November 2025 | 18.82 | 131.64 | 699 |
| December 2025 | 17.16 | 191.78 | 1118 |
| January 2026 | 16.51 | 192.71 | 1167 |
| February 2026 | 16.27 | 196.46 | 1207 |
| March 2026 | 17.64 | 171.37 | 971 |
| April 2026 | 18.79 | 132.57 | 706 |
| May 2026 | 19.38 | 135.94 | 702 |
| June 2026 | 19.29 | 171.43 | 889 |
| July 2026 | 18.48 | 197.81 | 1070 |
| August 2026 | 18.70 | 209.57 | 1121 |
Delaware vs the U.S. average
| Delaware | U.S. average | |
|---|---|---|
| Rate (August 2026) | 18.70¢/kWh | 18.16¢/kWh |
| Average monthly bill | $209.57 | $209.23 |
| Average monthly usage | 1121 kWh | 1152 kWh |
| Rate change, 1 year | +11.0% | +3.4% |
| Rate change, 5 years | +54.0% | +30.5% |
Delaware's average residential rate of 18.7¢/kWh for August 2026 ranks 33rd of 51 (1 = lowest). Over the past year the rate moved +11.0% (Delaware) versus +3.4% nationally; over five years, +54.0% versus +30.5% nationally. Average usage of 1121 kWh/month compares with 1152 kWh nationally, which is why the bill and rate ranks can differ. For how Delaware's recent increase ranks against every other state (12-month, 3-year and 5-year changes), see electricity rate increases by state.
Largest utilities in Delaware
Average effective rates and bills for Delaware's largest utilities, from EIA Form 861-M (August 2026). Or find yours by ZIP code.
| Utility | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) | Residential customers |
|---|---|---|---|---|
| Delmarva Power | 20.09 | 213.95 | 1,065 | 281,296 |
| Delaware Electric Cooperative | 14.74 | 188.18 | 1,277 | 110,275 |
Average bill = rate × average usage. Utilities with similar rates can show very different average bills because their customers' average usage differs (housing mix, heating fuel, climate).
Estimate a bill at Delaware rates
Worked example: 1,000 kWh at Delaware's average rate of 18.70¢/kWh is about $187.00. The state's actual average usage is 1121 kWh/month, which is what produces the $209.57 average bill. These are average effective rates including all charges; your utility's tariff will differ.
Wondering what's behind rising rates nationally? See Why is my electric bill so high?, our data-led explainer on demand growth, data centers, and grid costs. Also: Delaware gas prices and why they are what they are, and the cheapest way to heat a home by fuel and state.
Source: EIA retail sales data (residential sector, monthly), published with roughly a two-month lag. Rate = revenue ÷ sales; bill = revenue ÷ customers. We do not project unpublished months. See methodology.