Wisconsin Public Service time-of-use & off-peak hours

On RG5-OTOU, on-peak hours run 1 PM – 7 PM and 4 PM – 8 PM on weekdays. Below is every active TOU rate plan we track for Wisconsin Public Service — 11 plans — with period boundaries verified against the published tariff. No price values; periods only.

For developers & agents

Query Wisconsin Public Service periods 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.

Get a free API key Read the docs

Rate plan schedules

Every active time-of-use plan we track for Wisconsin Public Service, with its period boundaries.

RG5-OTOU Residential Service - Three-tier Optional Time-of-Use Residential
PeriodSeasonDaysHours
Mid-Peak May 1 – Sep 30 Mon–Fri 7 AM – 1 PM
On-Peak May 1 – Sep 30 Mon–Fri 1 PM – 7 PM
Mid-Peak May 1 – Sep 30 Mon–Fri 7 PM – 10 PM
Mid-Peak Oct 1 – Apr 30 Mon–Fri 7 AM – 4 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 4 PM – 8 PM
Mid-Peak Oct 1 – Apr 30 Mon–Fri 8 PM – 10 PM
Effective
Jan 1, 2026
Verified
RG-RR Residential Service - Response Rewards TOU Residential
PeriodSeasonDaysHours
On-Peak May 1 – Sep 30 Mon–Fri 11 AM – 8 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 7 AM – 12 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 5 PM – 8 PM
Effective
Jan 1, 2026
Verified
CG1-RR Small Commercial Cg-1 - Response Rewards TOU Commercial
PeriodSeasonDaysHours
On-Peak May 1 – Sep 30 Mon–Fri 11 AM – 8 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 7 AM – 12 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 5 PM – 8 PM
Effective
Jan 1, 2026
Verified
CG-20 Small Commercial & Industrial Service - Time of Use (Cg-20) Commercial
PeriodSeasonDaysHours
On-Peak Jun 1 – Sep 30 Mon–Fri 8 AM – 6 PM
On-Peak Oct 1 – May 31 Mon–Fri 8 AM – 1 PM
On-Peak Oct 1 – May 31 Mon–Fri 5 PM – 9 PM
Effective
Jan 1, 2026
Verified
CG20-RR Small Commercial Cg-20 - Response Rewards TOU Commercial
PeriodSeasonDaysHours
On-Peak Jun 1 – Sep 30 Mon–Fri 8 AM – 6 PM
On-Peak Oct 1 – May 31 Mon–Fri 8 AM – 1 PM
On-Peak Oct 1 – May 31 Mon–Fri 5 PM – 9 PM
Effective
Jan 1, 2026
Verified
CG3-OTOU-OPT1 Small Commercial & Industrial Service - Optional Time-of-Use (OPT1) Commercial
PeriodSeasonDaysHours
On-Peak May 1 – Sep 30 Mon–Fri 9 AM – 7 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 8 AM – 12 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 4 PM – 9 PM
Effective
Jan 1, 2026
Verified
CG3-OTOU-OPT2 Small Commercial & Industrial Service - Optional Time-of-Use (OPT2) Commercial
PeriodSeasonDaysHours
On-Peak May 1 – Sep 30 Mon–Fri 10 AM – 8 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 9 AM – 12 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 4 PM – 10 PM
Effective
Jan 1, 2026
Verified
CG3-OTOU-OPT3 Small Commercial & Industrial Service - Optional Time-of-Use (OPT3) Commercial
PeriodSeasonDaysHours
On-Peak May 1 – Sep 30 Mon–Fri 9 AM – 8 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 9 AM – 8 PM
Effective
Jan 1, 2026
Verified
CG5-RR Small Commercial Cg-5 - Response Rewards TOU Commercial
PeriodSeasonDaysHours
On-Peak May 1 – Sep 30 Mon–Fri 11 AM – 8 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 7 AM – 12 PM
On-Peak Oct 1 – Apr 30 Mon–Fri 5 PM – 8 PM
Effective
Jan 1, 2026
Verified
EV-R EV Pilot Program - Residential (overnight credit) EV
PeriodSeasonDaysHours
Super Off-Peak All year Every day 12 AM – 8 AM
Effective
Jan 1, 2025
Verified
CP-RR Large Commercial & Industrial - Response Rewards TOU Industrial
PeriodSeasonDaysHours
On-Peak Jun 1 – Sep 30 Mon–Fri 7 AM – 11 PM
On-Peak Oct 1 – May 31 Mon–Fri 7 AM – 10 PM
Effective
Jan 1, 2026
Verified

Frequently asked

  1. What are Wisconsin Public Service's on-peak hours?

    On the RG5-OTOU plan (Residential Service - Three-tier Optional Time-of-Use), on-peak hours run from 1 PM – 7 PM and 4 PM – 8 PM on weekdays. All remaining hours are classified as off-peak.

  2. Does Wisconsin Public Service charge more for electricity at certain times?

    Yes. Wisconsin Public Service 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 11 active schedules; tou.tools does not publish pricing ($/kWh) details.

  3. How do I get Wisconsin Public Service 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 Wisconsin Public Service 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 Wisconsin Public Service's plans?

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