Maine Electricity Rates: CMP and Versant Power Guide

Maine's electricity market features two main utilities - Central Maine Power (CMP) and Versant Power - operating in a deregulated environment where customers can choose their electricity supplier.

Central Maine Power (CMP)

CMP serves approximately 620,000 customers across southern and central Maine.

CMP Rate Structure

Customer Charge: ~$10.27/month
Delivery Charge: Per-kWh distribution cost
Stranded Cost Charge: Legacy power plant costs
Transmission Charge: Grid infrastructure
Standard Offer: If using CMP supply

Average residential rate: approximately 18-22 cents per kWh (varies seasonally)

Versant Power

Versant Power (formerly Emera Maine) serves approximately 160,000 customers in northern and eastern Maine.

Versant Rate Structure

Customer Charge: ~$8/month
Distribution Charge: Per-kWh delivery
Transmission: Grid costs
Standard Offer Supply: Default generation

Average residential rate: approximately 16-20 cents per kWh

Why Maine Rates Fluctuate

Maine's rates vary significantly by season due to:

Heating demand - winter increases natural gas prices
Hydro availability - spring runoff lowers costs
Transmission constraints - limited import capacity
Standard Offer timing - rates reset periodically

Choosing a Supplier

Maine allows electricity supplier choice:

Standard Offer

Competitively procured by the state
Rates change periodically
Default option for most customers

Competitive Suppliers

Fixed-rate contracts available
Compare at Maine.gov/PUC
Watch for rate increases after introductory periods

Maine Energy Assistance

LIHEAP through Maine Housing
HEAP (Home Energy Assistance Program)
Weatherization Assistance
Utility company payment plans

Tips for Maine Residents

Lock in rates before winter if possible
Consider heat pumps - Maine has strong incentives
Explore community solar - growing in Maine
Apply for assistance early in the heating season

Maine Electricity Rates: CMP and Versant Power Guide