Alliant Energy (Wisconsin) peak
& off-peak hours
Below is every active TOU rate plan we track for Alliant Energy (Wisconsin) — 6 plans — with period boundaries verified against the published tariff. No price values; periods only.
Rate Plans
RD-1 Residential Service - Demand Rate
Residential| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | Jun 1 – Aug 31 | Mon–Fri | 11 AM – 7 PM |
| On-Peak | Dec 1 – Feb 29 | Mon–Fri | 5 PM – 9 PM |
| Super Off-Peak | All year | Sat–Sun | 6 AM – 11 PM |
| Super Off-Peak | All year | Every day | 11 PM – 6 AM |
RG-5 Residential Service - Time-of-Use
Residential| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | Jun 1 – Aug 31 | Mon–Fri | 11 AM – 7 PM |
| On-Peak | Dec 1 – Feb 29 | Mon–Fri | 5 PM – 9 PM |
| Super Off-Peak | All year | Sat–Sun | 6 AM – 11 PM |
| Super Off-Peak | All year | Every day | 11 PM – 6 AM |
CG-2-TOD Commercial Service - Time-of-Use
Commercial| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | Jun 1 – Aug 31 | Mon–Fri | 11 AM – 7 PM |
| On-Peak | Dec 1 – Feb 29 | Mon–Fri | 5 PM – 9 PM |
| Super Off-Peak | All year | Sat–Sun | 6 AM – 11 PM |
| Super Off-Peak | All year | Every day | 11 PM – 6 AM |
GD-1 General Service - Demand
Commercial| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | Jun 1 – Aug 31 | Mon–Fri | 11 AM – 7 PM |
| On-Peak | Dec 1 – Feb 29 | Mon–Fri | 5 PM – 9 PM |
| Super Off-Peak | All year | Sat–Sun | 6 AM – 11 PM |
| Super Off-Peak | All year | Every day | 11 PM – 6 AM |
GS-3 General Service - Time-of-Use
Commercial| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | Jun 1 – Aug 31 | Mon–Fri | 11 AM – 7 PM |
| On-Peak | Dec 1 – Feb 29 | Mon–Fri | 5 PM – 9 PM |
| Super Off-Peak | All year | Sat–Sun | 6 AM – 11 PM |
| Super Off-Peak | All year | Every day | 11 PM – 6 AM |
CP-1 Industrial Power at Primary or Secondary Voltage - Time of Use
Industrial| Period | Season | Days | Hours |
|---|---|---|---|
| On-Peak | Jun 1 – Aug 31 | Mon–Fri | 11 AM – 7 PM |
| On-Peak | Dec 1 – Feb 29 | Mon–Fri | 5 PM – 9 PM |
| Super Off-Peak | All year | Sat–Sun | 6 AM – 11 PM |
| Super Off-Peak | All year | Every day | 11 PM – 6 AM |
Use these Alliant Energy (Wisconsin) hours in your app.
Current period and next transition for any ZIP or address.
FAQ's
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What are Alliant Energy (Wisconsin)'s on-peak hours?
On the RD-1 plan (Residential Service - Demand Rate), on-peak hours run from 11 AM – 7 PM and 5 PM – 9 PM on weekdays. All remaining hours are classified as off-peak.
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Does Alliant Energy (Wisconsin) charge more for electricity at certain times?
Yes. Alliant Energy (Wisconsin) 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.
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How do I get Alliant Energy (Wisconsin) 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 Alliant Energy (Wisconsin) 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.