Santee Cooper peak
& off-peak hours
Below is every active TOU rate plan we track for Santee Cooper — 4 plans — with period boundaries verified against the published tariff. No price values; periods only.
Rate Plans
RT-25 Residential Time-of-Use
Residential| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | Apr 1 – Oct 31 | Every day | 3 PM – 6 PM |
| On-Peak | Nov 1 – Mar 31 | Every day | 6 AM – 9 AM |
GT-25 General Service Time-of-Use
Commercial| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | Apr 1 – Oct 31 | Every day | 3 PM – 7 PM |
| On-Peak | Nov 1 – Mar 31 | Every day | 5 AM – 9 AM |
REV-25 Residential Electric Vehicle Power
EV| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | All year | Every day | 5 AM – 11 PM |
| Super Off-Peak | All year | Every day | 11 PM – 5 AM |
RG-25-EVO Residential Electric Vehicle Power Only Rider
EV| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | All year | Every day | 5 AM – 9 PM |
| Super Off-Peak | All year | Every day | 9 PM – 5 AM |
Use these Santee Cooper hours in your app.
Current period and next transition for any ZIP or address.
FAQ's
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What are Santee Cooper's on-peak hours?
On the RT-25 plan (Residential Time-of-Use), on-peak hours run from 3 PM – 6 PM and 6 AM – 9 AM every day. All remaining hours are classified as off-peak.
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Does Santee Cooper charge more for electricity at certain times?
Yes. Santee Cooper 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 Santee Cooper 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 Santee Cooper 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 Santee Cooper's plans?
For customers on EV-specific plans like REV-25, RG-25-EVO, 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.