Delmarva Power electricity rates
Investor-owned utility · Delaware · RFC region · PJM
Delmarva Power is a for-profit, investor-owned utility regulated by the state utility commission, serving 278,793 homes in Delaware. Its residential customers pay an average of 18.79¢/kWh including fixed and delivery charges, 4% more than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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Delmarva Power bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $93.95 | $38.67 |
| 1,000 kWh | $187.90 | $63.83 |
| 1,500 kWh | $281.85 | $89.00 |
| 2,000 kWh | $375.80 | $114.16 |
*Residential Space Heating Service (effective 2025-05-01, $13.50/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
Delmarva Power residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residential Space Heating Service | 2025-05-01 | $13.50 | 5.03¢ first 500 kWh, 5.03¢ after |
| Residential TOU Non-Demand Servicetime-of-use | 2025-09-07 | $19.86 | 8.9¢ (10am–9pm) · 1.6¢ (12am–10am, 9pm–12am) — summer weekdays |
| Residential TOU Non-Demand Servicetime-of-use | 2025-09-07 | $19.86 | 24.5¢ (10am–9pm) · 6.8¢ (12am–10am, 9pm–12am) — summer weekdays |
| Residential Space Heating Servicetime-of-use | 2025-05-01 | $13.50 | 14.5¢ (12am–12am) — summer weekdays |
| Residential Servicetime-of-use | 2025-05-01 | $13.50 | 5.3¢ (12am–12am) — summer weekdays |
| Residential Servicetime-of-use | 2025-05-01 | $13.50 | 14.8¢ (12am–12am) — summer weekdays |
| RESIDENTIAL TIME OF USE NON-DEMAND "R-TOU-ND"time-of-use | 2023-01-01 | $12.94 | 24.2¢ (10am–9pm) · 16.5¢ (12am–10am, 9pm–12am) — summer weekdays |
| RESIDENTIAL TIME OF USE PILOT PROGRAM "R-TOU-P"time-of-use | 2023-01-01 | $9.05 | 3.6¢ (12am–2pm, 7pm–12am) · 22.4¢ (2pm–7pm) — summer weekdays |
| RESIDENTIAL TIME OF USE PILOT PROGRAM "R-TOU-P"time-of-use | 2023-01-01 | $9.05 | 10.5¢ (12am–2pm, 7pm–12am) · 44.3¢ (2pm–7pm) — summer weekdays |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Delmarva Power rate history
2015–2025: +33% change in the average residential rate (13.70¢ → 18.16¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Delmarva Power | Delaware avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 104 | 102 | 266 |
| Outages per customer (SAIFI) | 0.78 | 0.92 | 1.34 |
| Average restoration time (CAIDI) | 2 hr 13 min | — | — |
| Outage minutes excluding major storms | 76 | 73 | 121 |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across Delmarva Power's counties, customers averaged 2 hr 22 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| New Castle | 234 | 60 | 27,045 | 2025-01-29 |
| Sussex | 102 | 36 | 11,053 | 2025-07-25 |
| Kent | 52 | 31 | 4,130 | 2025-12-14 |
Delmarva Power service area
Delmarva Power serves 3 counties in Delaware and 86 ZIP codes.
Kent, New Castle, Sussex
Cities: Wilmington, Dover, Newark, Middletown, Bear, Brookside, Glasgow, Hockessin, Smyrna, Pike Creek Valley, Milford, Claymont, North Star, Pike Creek, Wilmington Manor, Seaford, Georgetown, Elsmere, Edgemoor, New Castle, Millsboro, Laurel, Nassau, Harrington, Camden, Dover Base Housing, Rising Sun-Lebanon, Clayton, Lewes, Milton, Riverview, Selbyville, Greenville, Woodside East, Bridgeville, Townsend, Ocean View, Long Neck, Delaware City, Delmar
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | Peak-time rebates |
| Homes on time-based rates | 262,638 |
| Net-metered solar homes | 11,362 |
| Homes in demand response (e.g. thermostat rebates) | 92,762 |
Delmarva Power at a glance
| Ownership | Investor-owned utility |
| Services | Transmission, Distribution, Wholesale Marketing |
| Commercial rate | 16.76¢/kWh |
| Industrial rate | 7.64¢/kWh |
| Retail revenue (2025) | $678,254,300 |
| Electricity sold (2025) | 3,837,647 MWh |
| Peak demand | 4,140 MW summer · 4,100 MW winter |
| Line losses | 6.1% |
| Balancing authority | PJM |
| EIA utility ID | 5027 |
Other utilities in Delaware
Frequently asked questions
What is Delmarva Power's electricity rate?
Delmarva Power residential customers pay an average of 18.79¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 6% above the Delaware average of 17.79¢ and 4% above the U.S. average.
What is the average Delmarva Power electric bill?
About $167 a month. The average Delmarva Power home uses 890 kWh a month. At 1,000 kWh the bill would be about $188.
How many customers does Delmarva Power have?
Delmarva Power serves 278,793 residential customers and 343,380 customers in total in Delaware, across 3 counties.
How reliable is Delmarva Power?
In 2025, the average Delmarva Power customer was without power for 104 min (SAIDI) over 0.78 interruptions (SAIFI), including major storms. Excluding major event days it was 76 min. The Delaware average was 102 min and the U.S. average 4 hr 26 min.
Does Delmarva Power offer time-of-use rates?
Yes. The OpenEI rate database lists 8 time-of-use residential plans, including Residential TOU Non-Demand Service. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Delmarva Power offer net metering for solar?
Delmarva Power had 11,362 residential net-metered customers in 2025 with 84.6 MW of capacity. Estimate solar savings at this utility's rate.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with Delmarva Power before making decisions.