Colorado time-of-use hours by utility
Every Colorado 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 Colorado
Sorted by number of customers served in Colorado.
No utilities match those filters.
Resolve any Colorado ZIP in one call.
Utility + current period + next transition.
FAQ's
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What are the typical time-of-use on-peak hours in Colorado?
Across the 16 residential TOU plans tou.tools tracks in Colorado, the most common on-peak window is 5 PM – 9 PM (9 plans); others run 4 PM – 9 PM and 4 PM – 8 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 Colorado offer time-of-use rate plans?
tou.tools tracks 10 Colorado utilities with at least one active TOU rate plan — 44 active schedules in total. The largest by customers served are Xcel Energy Colorado, Colorado Springs Utilities, and CORE Electric Cooperative. They span investor-owned utilities, municipal utilities, and electric cooperatives. The full list above is sorted by customers served.
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Do Colorado time-of-use peak hours apply on weekends?
It depends on the plan. Of the 16 residential TOU plans we track in Colorado, 3 apply on-peak periods every day including weekends, while 13 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 Colorado time-of-use hours change by season?
Some do. Of the 16 residential TOU plans we track in Colorado, 2 shift their period boundaries between seasons (typically summer and winter), while 14 keep the same hours year-round. Each schedule above lists its exact season dates.
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When is the cheapest time to charge an EV in Colorado?
tou.tools tracks 5 EV-specific rate plans in Colorado (EV-PUB, LGS-SEV, LGS-SNEV, P-EV, and S-EV). On EV time-of-use plans the lowest-cost window is generally the overnight super-off-peak or off-peak period; charging then avoids the on-peak window. See the EV plan schedules for the exact hours.
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How do I find which Colorado utility serves a specific address or ZIP code?
tou.tools maps 399 Colorado 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.