The Illuminating Company peak
& off-peak hours

Below is every active TOU rate plan we track for The Illuminating Company — 6 plans — with period boundaries verified against the published tariff. No price values; periods only.

Rate Plans

GEN-TOD-R Generation Service Time-Of-Day Option (Residential)

Residential
PeriodDaysHours
Mid-Peak Mon–Fri 6 AM – 2 PM
On-Peak Mon–Fri 2 PM – 6 PM
Mid-Peak Mon–Fri 6 PM – 8 PM
Effective
Jun 1, 2021
Verified

RCP Residential Critical Peak Pricing Rider

Residential
PeriodDaysHours
Jun 1 – Aug 31
On-Peak Mon–Fri 7 AM – 11 PM
Effective
Jun 1, 2024
Verified

CPP Experimental Critical Peak Pricing Rider

Commercial
PeriodDaysHours
Mid-Peak Mon–Fri 6 AM – 12 PM
On-Peak Mon–Fri 12 PM – 6 PM
Mid-Peak Mon–Fri 6 PM – 10 PM
Effective
Jun 1, 2025
Verified

GEN-TOD-NR Generation Service Time-Of-Day Option (Non-Residential)

Commercial
PeriodDaysHours
Mid-Peak Mon–Fri 6 AM – 12 PM
On-Peak Mon–Fri 12 PM – 6 PM
Mid-Peak Mon–Fri 6 PM – 10 PM
Effective
Jun 1, 2021
Verified

HLF Commercial High Load Factor Experimental Time-of-Use Rider

Commercial
PeriodDaysHours
Jun 1 – Aug 31
On-Peak Mon–Fri 12 PM – 6 PM
Effective
Jun 1, 2025
Verified

CPP-IND Experimental Critical Peak Pricing Rider (industrial — GSU/GT)

Industrial
PeriodDaysHours
Mid-Peak Mon–Fri 6 AM – 12 PM
On-Peak Mon–Fri 12 PM – 6 PM
Mid-Peak Mon–Fri 6 PM – 10 PM
Effective
Jun 1, 2025
Verified
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Use these The Illuminating Company hours in your app.

Current period and next transition for any ZIP or address.

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FAQ's

  1. What are The Illuminating Company's on-peak hours?

    On the GEN-TOD-R plan (Generation Service Time-Of-Day Option (Residential)), on-peak hours run from 2 PM – 6 PM on weekdays. All remaining hours are classified as off-peak.

  2. Does The Illuminating Company charge more for electricity at certain times?

    Yes. The Illuminating Company 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 6 active schedules; tou.tools does not publish pricing ($/kWh) details.

  3. How do I get The Illuminating Company 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 The Illuminating Company 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.