Southwestern Public Service Co time-of-use hours in Texas

On TX-IV-3-TOU, on-peak hours run 1 PM – 7 PM on weekdays. Below is every active TOU rate plan Southwestern Public Service Co offers in Texas — 4 plans — with period boundaries verified against the published tariff. No price values; periods only.

Southwestern Public Service Co also serves New Mexico — or view all states.

For developers & agents

Query Southwestern Public Service Co periods in Texas 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.

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Rate plan schedules

Every active time-of-use plan we track for Southwestern Public Service Co in Texas, with its period boundaries.

TX-IV-3-TOU Residential Service — Alternate Time of Use Rider (TX) Residential
PeriodSeasonDaysHours
On-Peak Jun 1 – Sep 30 Mon–Fri 1 PM – 7 PM
Effective
Feb 1, 2024
Verified
TX-IV-172-TOU Small General Service — Alternate Time of Use Rider (TX) Commercial
PeriodSeasonDaysHours
On-Peak Jun 1 – Sep 30 Mon–Fri 1 PM – 7 PM
Effective
Feb 1, 2024
Verified
TX-IV-174-TOU Small Municipal and School Service — Alternate Time of Use Rider (TX) Commercial
PeriodSeasonDaysHours
On-Peak Jun 1 – Sep 30 Mon–Fri 1 PM – 7 PM
Effective
Feb 1, 2024
Verified
TX-IV-182-TOU Large School Service — Alternate Time of Use Rider (TX) Commercial
PeriodSeasonDaysHours
On-Peak Jun 1 – Sep 30 Mon–Fri 1 PM – 7 PM
Effective
Feb 1, 2024
Verified

Frequently asked

  1. What are Southwestern Public Service Co's on-peak hours in Texas?

    On the TX-IV-3-TOU plan (Residential Service — Alternate Time of Use Rider (TX)), on-peak hours run from 1 PM – 7 PM on weekdays. All remaining hours are classified as off-peak.

  2. Does Southwestern Public Service Co charge more for electricity at certain times in Texas?

    Yes. Southwestern Public Service Co 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.

  3. How do I get Southwestern Public Service Co 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 Southwestern Public Service Co 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.