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.
+$35a month
Maine Standard Offer electricity supply rate increase
On bills now Supply and capacity price before the Maine Public Utilities Commission.
+$11a month
on a typical bill, as approved
As published, for a home using 550 kWh a month.
Fileddate not published
Hearingheld or waived
Decisiondecided
On billsJan 1, 2026
The Standard Offer, the default electricity supply price the PUC sets each year for CMP customers who have not chosen a competitive supplier, rose from 10.6128 cents to 12.721 cents per kWh effective January 1, 2026, about a 20 percent jump. For a typical household using 550 kWh a month, that works out to roughly 11 dollars more a month. This is the supply portion of the bill, so the extra revenue goes to power generators, not to CMP.
What it means for your bill: 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.
- Status
- On bills now
- Utility
- Central Maine Power
- Commission
- Maine Public Utilities Commission
- Approved
- 19.9% residential
- Typical bill change
- +$11.00 a month at 550 kWh
- On bills from
- January 1, 2026
- Last checked
- August 29, 2026
Sources
- Maine electricity bills set to rise as 2026 Standard Offer rates approved, NewsCenter Maine, 2025-11-19
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Other Central Maine Power matters
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