Delmarva Power peak
& off-peak hours in Delaware
Below is every active TOU rate plan Delmarva Power offers in Delaware — 4 plans — with period boundaries verified against the published tariff. No price values; periods only.
Delmarva Power also serves Maryland — or view all states.
Rate Plans
DE-R-TOU-ND Residential Time-of-Use Non-Demand
Residential| Period | Days | Hours |
|---|---|---|
| first Sun of Nov – day before second Sun of Mar | ||
| On-Peak | Mon–Fri | 9 AM – 8 PM |
| second Sun of Mar – day before first Sun of Nov | ||
| On-Peak | Mon–Fri | 10 AM – 9 PM |
DE-LGS-S Large General Service - Secondary
Commercial| Period | Days | Hours |
|---|---|---|
| first Sun of Nov – day before second Sun of Mar | ||
| On-Peak | Mon–Fri | 6 AM – 10 PM |
| second Sun of Mar – day before first Sun of Nov | ||
| On-Peak | Mon–Fri | 9 AM – 10 PM |
DE-PIV Plug-In Vehicle Charging
EV| Period | Days | Hours |
|---|---|---|
| On-Peak | Mon–Fri | 12 PM – 8 PM |
DE-GS-P General Service - Primary
Industrial| Period | Days | Hours |
|---|---|---|
| first Sun of Nov – day before second Sun of Mar | ||
| On-Peak | Mon–Fri | 6 AM – 10 PM |
| second Sun of Mar – day before first Sun of Nov | ||
| On-Peak | Mon–Fri | 9 AM – 10 PM |
Use these Delmarva Power hours in your app.
Current period and next transition for any ZIP or address.
FAQ's
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What are Delmarva Power's on-peak hours in Delaware?
On the DE-R-TOU-ND plan (Residential Time-of-Use Non-Demand), on-peak hours run from 9 AM – 8 PM and 10 AM – 9 PM on weekdays. All remaining hours are classified as off-peak.
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Does Delmarva Power charge more for electricity at certain times in Delaware?
Yes. Delmarva Power offers time-of-use (TOU) rate plans where electricity costs vary depending on the period. The period—peak, off-peak, mid-peak, or super off-peak—depends on the time, day, and season. This page lists boundaries for 4 active schedules; tou.tools does not publish pricing ($/kWh) details.
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How do I get Delmarva Power time-of-use periods in my app?
Schedules are accessible programmatically via the tou.tools REST API and MCP server for AI agents. By querying a U.S. address or ZIP code, your application can instantly retrieve the current period and next scheduled transition time. Developer API keys are free.
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Do Delmarva Power time-of-use hours change during holidays or seasons?
Yes. Peak hours and rate periods can vary by season (typically summer and winter halves) and special holidays. While some schedules like E-ELEC keep stable hours year-round, others introduce super off-peak windows or adjust peak times. Check each rate plan card above for specific seasonal boundaries.
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What is the best time to charge an EV under Delmarva Power's plans in Delaware?
For customers on EV-specific plans like DE-PIV, the most cost-effective time to charge is during super off-peak or off-peak hours. Charging during these designated windows significantly reduces electricity costs and minimizes demand on the grid.