CMP's own filing predicts a short-term decrease around mid-2026 followed by a much bigger increase, up to 18 dollars a month, in 2027; the case was still pending as of mid-2026.
-$4a month
Central Maine Power multi-year rate plan denied
Denied Base rate case before the Maine Public Utilities Commission.
+$35a month
would have been, on a typical bill
As published by the utility or the commission.
Fileddate not published
Hearingheld or waived
Denieddecided
On billsnever
In November 2025 the Maine PUC dismissed Central Maine Power's proposed multi-year rate plan, which the company said would have raised a typical residential bill by roughly 35 dollars a month once fully phased in over five years. Commissioners cited concerns about the pacing of planned investments, accountability, and ratepayer protections, while leaving the door open to a revised filing.
What it means for your bill: CMP's big five-year rate plan was rejected outright; regulators told the company to come back with something smaller and more accountable, which it did in April 2026.
- Status
- Denied
- Utility
- Central Maine Power
- Commission
- Maine Public Utilities Commission
- Typical bill change
- +$35.00 a month
- Last checked
- August 29, 2026
Sources
- State PUC says no to Central Maine Power's rate hike request, PenBay Pilot, 2025-11-20
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Other Central Maine Power matters
If you have not switched electric suppliers, your CMP bill went up about 11 dollars a month in 2026 because of the statewide Standard Offer price, not because of anything CMP itself did.
+$11a month