Indiana Michigan Power peak
& off-peak hours in Michigan

Below is every active TOU rate plan Indiana Michigan Power offers in Michigan — 9 plans — with period boundaries verified against the published tariff. No price values; periods only.

Indiana Michigan Power also serves Indiana — or view all states.

Rate Plans

RS-CPP Residential Service Critical Peak Pricing (RS-CPP) — Michigan

Residential
PeriodDaysHours
May 1 – Sep 30
Mid-Peak Mon–Fri 7 AM – 1 PM
On-Peak Mon–Fri 1 PM – 7 PM
Mid-Peak Mon–Fri 7 PM – 9 PM
Effective
Nov 1, 2024
Verified

RS-TOD2 Residential Service Time-of-Day 2 (RS-TOD2) — Michigan

Residential
PeriodDaysHours
May 1 – Sep 30
On-Peak Mon–Fri 2 PM – 6 PM
Effective
Jul 15, 2024
Verified

GS-CPP General Service Critical Peak Pricing (GS-CPP) — Michigan

Commercial
PeriodDaysHours
May 1 – Sep 30
Mid-Peak Mon–Fri 7 AM – 1 PM
On-Peak Mon–Fri 1 PM – 7 PM
Mid-Peak Mon–Fri 7 PM – 9 PM
Effective
Nov 1, 2024
Verified

GS-TOD2 General Service Time-of-Day 2 (GS-TOD2) — Michigan

Commercial
PeriodDaysHours
May 1 – Sep 30
On-Peak Mon–Fri 2 PM – 6 PM
Effective
Jul 15, 2024
Verified

LGS Large General Service (LGS) — Michigan

Commercial
PeriodDaysHours
On-Peak Mon–Fri 7 AM – 9 PM
Effective
Jul 15, 2024
Verified

059 Residential PEV (RS-PEV) Option 3 — Submetered — Michigan

EV
PeriodDaysHours
On-Peak Every day 6 AM – 11 PM
Effective
Jul 15, 2024
Verified

G.S.-PEV General Service Plug-in Electric Vehicle (G.S.-PEV) — Michigan

EV
PeriodDaysHours
On-Peak Every day 6 AM – 11 PM
Effective
Apr 1, 2025
Verified

RS-PEV Residential PEV (RS-PEV) Options 1 and 2 — Michigan

EV
PeriodDaysHours
On-Peak Mon–Fri 7 AM – 9 PM
Effective
Jul 15, 2024
Verified

LP Large Power (LP) — Michigan

Industrial
PeriodDaysHours
On-Peak Mon–Fri 7 AM – 9 PM
Effective
Jul 15, 2024
Verified
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Use these Indiana Michigan Power hours in your app.

Current period and next transition for any ZIP or address.

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FAQ's

  1. What are Indiana Michigan Power's on-peak hours in Michigan?

    On the RS-CPP plan (Residential Service Critical Peak Pricing (RS-CPP) — Michigan), on-peak hours run from 1 PM – 7 PM on weekdays. All remaining hours are classified as off-peak.

  2. Does Indiana Michigan Power charge more for electricity at certain times in Michigan?

    Yes. Indiana Michigan 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 9 active schedules; tou.tools does not publish pricing ($/kWh) details.

  3. How do I get Indiana Michigan 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.

  4. Do Indiana Michigan 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.

  5. What is the best time to charge an EV under Indiana Michigan Power's plans in Michigan?

    For customers on EV-specific plans like 059, G.S.-PEV, RS-PEV, 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.