Michigan time-of-use hours by utility

Across the 10 residential TOU plans tou.tools tracks in Michigan, the most common on-peak window is 2 PM – 7 PM (3 plans); others run 3 PM – 7 PM and 11 AM – 7 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.

tou.tools tracks 4 Michigan utilities with at least one active TOU rate plan — 28 active schedules in total. The largest by customers served are DTE Electric Company, Consumers Energy Co, and Indiana Michigan Power Co. They span investor-owned utilities and municipal utilities. The full list above is sorted by customers served.

On the residential TOU plans we track in Michigan, on-peak hours apply on weekdays only — weekends are off-peak across all 10 plans. Many tariffs also treat observed holidays as off-peak; the Days column in each schedule above shows the exact rule.

Some do. Of the 10 residential TOU plans we track in Michigan, 2 shift their period boundaries between seasons (typically summer and winter), while 8 keep the same hours year-round. Each schedule above lists its exact season dates.

tou.tools tracks 7 EV-specific rate plans in Michigan (D1-9, LCEV, MCEV, MI-GS-PEV, MI-RS-PEV, MI-RS-PEV-SUB, and RES22). 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.

tou.tools maps 1,318 Michigan 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.