Maine time-of-use hours by utility
Every Maine 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 Maine
Sorted by number of customers served in Maine.
Frequently asked
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What are the typical time-of-use on-peak hours in Maine?
Across the 4 residential TOU plans tou.tools tracks in Maine, the most common on-peak window is 7 AM – 12 PM (4 plans); others run 4 PM – 8 PM and 8 AM – 1 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 Maine offer time-of-use rate plans?
tou.tools tracks 1 Maine utility with at least one active TOU rate plan — 7 active schedules in total. The largest by customers served is Versant Power. They span investor-owned utilities. The full list above is sorted by customers served.
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Do Maine time-of-use peak hours apply on weekends?
On the residential TOU plans we track in Maine, on-peak hours apply on weekdays only — weekends are off-peak across all 4 plans. 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 Maine time-of-use hours change by season?
Some do. Of the 4 residential TOU plans we track in Maine, 1 shift their period boundaries between seasons (typically summer and winter), while 3 keep the same hours year-round. Each schedule above lists its exact season dates.
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How do I find which Maine utility serves a specific address or ZIP code?
tou.tools maps 187 Maine 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 Maine, one API.
Resolve any Maine ZIP or address to its utility and get the current period plus the next transition — over REST or MCP.