Potomac Electric Power Co time-of-use hours in Maryland

On MD-GT-LV, on-peak hours run 12 PM – 8 PM on weekdays. Below is every active TOU rate plan Potomac Electric Power Co offers in Maryland — 4 plans — with period boundaries verified against the published tariff. No price values; periods only.

Potomac Electric Power Co also serves District of Columbia — or view all states.

For developers & agents

Query Potomac Electric Power Co periods in Maryland programmatically.

One call returns the current period and the next transition time for any U.S. ZIP or address — GET /query/current over REST, or the same data through MCP for AI agents.

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Rate plan schedules

Every active time-of-use plan we track for Potomac Electric Power Co in Maryland, with its period boundaries.

MD-GT-LV Time Metered General Service - Low Voltage Commercial
PeriodSeasonDaysHours
On-Peak All year Mon–Fri 12 PM – 8 PM
Mid-Peak All year Mon–Fri 8 AM – 12 PM
Mid-Peak All year Mon–Fri 8 PM – 12 AM
Effective
Jul 29, 2024
Verified
MD-MGT-LV-II Time Metered Medium General Service - Low Voltage - Type II Commercial
PeriodSeasonDaysHours
On-Peak All year Mon–Fri 12 PM – 8 PM
Mid-Peak All year Mon–Fri 8 AM – 12 PM
Mid-Peak All year Mon–Fri 8 PM – 12 AM
Effective
Jul 29, 2024
Verified
MD-MGT-LV-III Time Metered Medium General Service - Low Voltage - Type III Commercial
PeriodSeasonDaysHours
On-Peak All year Mon–Fri 12 PM – 8 PM
Mid-Peak All year Mon–Fri 8 AM – 12 PM
Mid-Peak All year Mon–Fri 8 PM – 12 AM
Effective
Jul 29, 2024
Verified
MD-R-PIV Residential Service - Plug-in Vehicle Charging EV
PeriodSeasonDaysHours
On-Peak All year Mon–Fri 12 PM – 8 PM
Effective
Sep 1, 2025
Verified

Frequently asked

  1. What are Potomac Electric Power Co's on-peak hours in Maryland?

    On the MD-GT-LV plan (Time Metered General Service - Low Voltage), on-peak hours run from 12 PM – 8 PM on weekdays. All remaining hours are classified as off-peak.

  2. Does Potomac Electric Power Co charge more for electricity at certain times in Maryland?

    Yes. Potomac Electric Power Co 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.

  3. How do I get Potomac Electric Power Co 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.

  4. Do Potomac Electric Power Co 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.

  5. What is the best time to charge an EV under Potomac Electric Power Co's plans in Maryland?

    For customers on EV-specific plans like MD-R-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.