Wyoming time-of-use hours by utility
Every Wyoming electric utility we track with at least one active time-of-use rate plan, with peak and off-peak hours verified against the published tariff. Periods only — no price values.
Every TOU schedule on this page verified since
Utilities in Wyoming
Sorted by number of customers served in Wyoming.
No utilities match those filters.
Frequently asked
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What are the typical time-of-use on-peak hours in Wyoming?
Across the 2 residential TOU plans tou.tools tracks in Wyoming, the most common on-peak window is 11 AM – 11 PM (1 plan); others run 8 AM – 12 AM and 7 AM – 11 PM. Every hour outside the on-peak (and any mid-peak) window is billed as off-peak. Exact boundaries vary by utility and plan — see each utility's schedule above.
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Which electric utilities in Wyoming offer time-of-use rate plans?
tou.tools tracks 3 Wyoming utilities with at least one active TOU rate plan — 4 active schedules in total. The largest by customers served are PacifiCorp, Montana-Dakota Utilities, and Black Hills Power, Inc.. They span investor-owned utilities. The full list above is sorted by customers served.
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Do Wyoming time-of-use peak hours apply on weekends?
It depends on the plan. Of the 2 residential TOU plans we track in Wyoming, 1 apply on-peak periods every day including weekends, while 1 restrict on-peak to weekdays and treat weekends as off-peak. Many tariffs also treat observed holidays as off-peak; the Days column in each schedule above shows the exact rule.
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Do Wyoming time-of-use hours change by season?
Some do. Of the 2 residential TOU plans we track in Wyoming, 1 shift their period boundaries between seasons (typically summer and winter), while 1 keep the same hours year-round. Each schedule above lists its exact season dates.
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How do I find which Wyoming utility serves a specific address or ZIP code?
tou.tools maps 985 Wyoming ZIP codes to the utilities that serve them. Because service territories can overlap, a ZIP may return more than one candidate utility; supplying a full street address resolves it to a single utility via a geocoded point-in-territory lookup. The REST API and MCP server both return the matching utility and its current TOU period.
Time-of-use periods for all of Wyoming, one API.
Resolve any Wyoming ZIP or address to its utility and get the current period plus the next transition — over REST or MCP.