Duke Energy Carolinas peak
& off-peak hours in South Carolina

Below is every active TOU rate plan Duke Energy Carolinas offers in South Carolina — 5 plans — with period boundaries verified against the published tariff. No price values; periods only.

Duke Energy Carolinas also serves North Carolina — or view all states.

Rate Plans

RE-TC Schedule RE-TC — Residential All-Electric Service, Time of Use with Critical Peak Pricing

Residential
PeriodSeasonDaysHours
Super Off-Peak May 1 – Sep 30 Every day 1 AM – 6 AM
On-Peak May 1 – Sep 30 Mon–Fri 6 PM – 9 PM
Super Off-Peak Oct 1 – Apr 30 Every day 1 AM – 3 AM
On-Peak Oct 1 – Apr 30 Mon–Fri 6 AM – 9 AM
Super Off-Peak Oct 1 – Apr 30 Every day 11 AM – 4 PM
Effective
Mar 1, 2026
Verified

RS-TC Schedule RS-TC — Residential Service, Time of Use with Critical Peak Pricing

Residential
PeriodSeasonDaysHours
Super Off-Peak May 1 – Sep 30 Every day 1 AM – 6 AM
On-Peak May 1 – Sep 30 Mon–Fri 6 PM – 9 PM
Super Off-Peak Oct 1 – Apr 30 Every day 1 AM – 3 AM
On-Peak Oct 1 – Apr 30 Mon–Fri 6 AM – 9 AM
Super Off-Peak Oct 1 – Apr 30 Every day 11 AM – 4 PM
Effective
Mar 1, 2026
Verified

R-STOU Schedule R-STOU — Residential Solar Service, Time-of-Use

Residential
PeriodSeasonDaysHours
Super Off-Peak Mar 1 – Nov 30 Every day 12 AM – 6 AM
On-Peak Mar 1 – Nov 30 Mon–Fri 6 PM – 9 PM
On-Peak Dec 1 – Feb 29 Mon–Fri 6 AM – 9 AM
On-Peak Dec 1 – Feb 29 Mon–Fri 6 PM – 9 PM
Effective
Mar 1, 2026
Verified

RT Schedule RT — Residential Service, Time-of-Use

Residential
PeriodSeasonDaysHours
Super Off-Peak May 1 – Sep 30 Every day 1 AM – 6 AM
On-Peak May 1 – Sep 30 Mon–Fri 6 PM – 9 PM
Super Off-Peak Oct 1 – Apr 30 Every day 1 AM – 3 AM
On-Peak Oct 1 – Apr 30 Mon–Fri 6 AM – 9 AM
Super Off-Peak Oct 1 – Apr 30 Every day 11 AM – 4 PM
Effective
Mar 1, 2026
Verified

OPT Schedule OPT — Optional Power Service, Time-of-Use

Commercial
PeriodSeasonDaysHours
On-Peak Jun 1 – Sep 30 Mon–Fri 1 PM – 9 PM
On-Peak Oct 1 – May 31 Mon–Fri 6 AM – 1 PM
Effective
Mar 1, 2026
Verified
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Use these Duke Energy Carolinas hours in your app.

Current period and next transition for any ZIP or address.

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FAQ's

  1. What are Duke Energy Carolinas's on-peak hours in South Carolina?

    On the RE-TC plan (Schedule RE-TC — Residential All-Electric Service, Time of Use with Critical Peak Pricing), on-peak hours run from 6 PM – 9 PM and 6 AM – 9 AM on weekdays. All remaining hours are classified as off-peak.

  2. Does Duke Energy Carolinas charge more for electricity at certain times in South Carolina?

    Yes. Duke Energy Carolinas 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 5 active schedules; tou.tools does not publish pricing ($/kWh) details.

  3. How do I get Duke Energy Carolinas 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 Duke Energy Carolinas 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.