Delmarva Power Electricity Rates and Average Bill (Maryland)
Data through August 2026 (the latest month EIA has published) · Updated October 31, 2026
As of August 2026, Delmarva Power's residential customers in Maryland paid an average effective rate of 23.00¢/kWh with an average monthly bill of $255.13, per EIA Form 861-M data. That rate is 1.6¢ above the Maryland average of 21.40¢/kWh; the U.S. average is 18.16¢/kWh.
Rate trend vs the Maryland average
View this chart as a table (last 12 months)
| Month | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) |
|---|---|---|---|
| September 2025 | 22.21 | 180.98 | 815 |
| October 2025 | 22.51 | 141.96 | 631 |
| November 2025 | 22.57 | 173.63 | 769 |
| December 2025 | 22.04 | 316.60 | 1436 |
| January 2026 | 23.12 | 344.51 | 1490 |
| February 2026 | 22.51 | 316.34 | 1405 |
| March 2026 | 22.89 | 220.50 | 963 |
| April 2026 | 22.97 | 162.65 | 708 |
| May 2026 | 23.25 | 158.06 | 680 |
| June 2026 | 22.74 | 197.52 | 869 |
| July 2026 | 22.53 | 253.75 | 1126 |
| August 2026 | 23.00 | 255.13 | 1109 |
Delmarva Power vs Maryland vs the U.S.
| Delmarva Power | Maryland | U.S. average | |
|---|---|---|---|
| Rate (August 2026) | 23.00¢/kWh | 21.40¢/kWh | 18.16¢/kWh |
| Average monthly bill | $255.13 | $233.47 | $209.23 |
| Average monthly usage | 1109 kWh | 1091 kWh | 1152 kWh |
| Rate change, 1 year | +6.2% | +7.6% | +3.4% |
Estimate a bill at Delmarva Power rates
Worked example: 1,000 kWh at Delmarva Power's average effective rate of 23.00¢/kWh is about $230.00. The utility's actual average usage is 1109 kWh/month, which produces the $255.13 average bill. This is an all-in average (energy, delivery, fixed charges, riders); your tariff's marginal price will differ.
See the full Maryland rate trend, look up another utility by ZIP code, or read why electric bills are rising.
Source: EIA Form 861-M (monthly utility-level sales to ultimate customers, residential), published with roughly a two-month lag. Rate = revenue ÷ sales; bill = revenue ÷ customers. Months failing basic sanity screens are excluded. See methodology.