Pricing and rates

Use our resources to understand your electric charges and learn how to choose the right supply and delivery rates for you.

What makes up your bill

Understand your electric charges.

Optional residential delivery rates

Explore optional delivery rates and find the best fit for you.

Supply rates

Check your options for purchasing electricity.

FAQs

Get answers to frequently common questions about rates.

What makes up your electric bill

Start by understanding what makes up your bill. Check out our sample bill for more in depth information.

Distribution and
transmission charges

CMP keeps power flowing and customers supported, from poles and lines to billing, customer service, engineering, and real-time grid management.

Non-CMP public policy

CMP earns no profit from this.

These state-required charges help fund renewable energy programs, low-income assistance and energy-efficiency initiatives. CMP collects these charges and passes them along as required.

Non-CMP supply charges

CMP earns no profit from this.

What you pay for the electricity you use. You can choose the Standard Offer Supply (SOP) set by the Maine Public Utilities Commission (MPUC) or select a Competitive Electricity Provider (CEP).

Optional residential delivery rates

Delivery charges cover the delivery of electricity to your home through the transmission and distribution system maintained and operated by CMP. Compare our three current optional residential rates to see what rate works best for you or check our non-residential delivery rates.

Rate A standard rate

Service charge: $27.37/mo kWh above 50kWh: $0.12

Time-of-use rate

Price based on hours
Service: $24.18/mo
kWh on-peak*: $0.429
kWh off-peak**: $0.061

Electric Technology
 rate

Good fit for >800 kWh/mo

Service charge: $41.24/mo
kWh: $0.089

Set to expire January 2027. CMP’s request to make this rate permanent is under review by the MPUC. You can share your opinion on extending the rate on the MPUC site.

Seasonal heat pump rate

This rate is no longer available. CMP's request to reinstate the rate is under review by the MPUC. 

You can share your opinion on reinstating the rate on the MPUC site.

Feature Rate A Time-of-use rate Electric Technology
Service charge $27.37 (first 50kWh incl.) $24.18 $41.24 
Energy rate $0.12/kWh $0.061 off-peak**  $0.089/kWh
On-peak* rate -- $0.429 on-peak** --
Best for -- 86% off-peak monthly use >800 kWh/month (EV/Heat pump)

*On-peak Hours: 5 p.m. to 9 p.m. (Monday through Friday, excluding holidays)
**Off-peak Hours: All other hours

ten year rate history chart rate a


 

Rates details and historical prices

To learn more about a particular rate, download a PDF description of its availability and charges.

 

Rate (Rate Code)

Description
Rate Tariff Index Rate Tariff Index
A Residential Service
A-ELECTRIC TECHNOLOGY Residential Service - Electric Technology Rate
AL Area Lighting Service
A-LM Residential Load Management Service
A-SEASONAL HEAT PUMP (cancelled) Seasonal Residential Service (cancelled)

A-TOU

 Residential Service - Time-Of-Use

To learn more about a particular rate, download a PDF description of its availability and charges.

Rate (Rate Code)

Description
Rate Tariff Index Rate Tariff Index
B-CPT Optional Targeted Service Rate: B-CPT General Service - Coincident Peak Transmission
B-DCFC Optional Targeted Service Rate: B-DCFC General Service - Electric Vehicle Direct Current Fast Charger
B-ES Optional Targeted Service Rate: B-ES General Service - Energy Storage
B-SVA Optional Targeted Service Rider: B-SVA General Svc - Steady Volume Advantage
DIRIGO Optional Targeted Service:  Dirigo Business Incentives (DBI)-General Service-Economic Development Rider
GS-DF General Service - Dual Feed
IGS-P-TOU Intermediate General Service Primary Time-of-Use
IGS-S-TOU Intermediate General Service Secondary Time-of-Use
LGS-P-TOU Large General Service - Primary Time-of-Use
LGS-S-TOU Large General Service - Secondary Time-of-Use
LGS-ST-TOU Large General Service - Subtransmission Time-of-Use
LGS-T-TOU Large General Service - Transmission Time-of-Use
MGS-P Medium General Service - Primary
MGS-P-TOU Medium General Service - Primary - Time-of-Use
MGS-S Medium General Service - Secondary
MGS-S-TOU Medium General Service - Secondary Time-of-Use
MMI Optional Targeted Service: Maine-Made Incentive General Service - Economic Development Rider
O Temporary Power Rate
PTZ Optional Targeted Service: Pine Tree Development Zone (PTZ) General Service Economic Development Rider
SB Standby Service
SGS Small General Service
SGS-TOU Small General Service Time-of-Use
SL Street Lighting Service

Calculate your potential savings

You can test different rate options by logging into your account and clicking ‘Compare rate types’ in the right‑hand menu.

Save on your electricity use

Go to our Energy Manager tool to get down-to-the-hour usage and personalized tips to reduce your usage.

Check your current rate

To view your current delivery rate, check page 2 of your bill. For your supply option, check page 3.

Electricity supply rates

At CMP, we want to help you understand your energy supply options. You can choose between the SOP, defined by the MPUC, or one of the available CEPs. No matter which option you choose, we pass the supply cost through on your bill without making a profit.

CMP residential standard offer

This is the default option. The supply rate is set by the MPUC.

Competitive Electricity Providers

CEPs may offer fixed or variable supply prices, different contract terms or additional services. Ensure you understand the terms and possible rate variations before choosing your supplier.

Non-residential customer? On the MPUC website, you can find rates for small non-residential customers, variable monthly rates for medium non-residential customers (with peak demand between 20 kW and 400 kW—the highest amount of electricity used at one moment) and large non-residential-residential customers (with peak demand above 400 kW).

Frequently asked questions pricing faqs

Frequently asked questions

The Maine Public Utilities Commission (PUC) oversees CMP's delivery rates. The PUC reviews and approves the charges CMP can collect for delivering electricity and sets the return CMP is allowed to earn on investments in the electric system. The PUC was created by Maine law and began work in 1914. Its three commissioners were nominated by the Governor and confirmed by the Maine Senate.

The Commissioners are assisted by legal, technical, financial and consumer-assistance staff. PUC proceedings use court-like standards of evidence, procedure and decisions that allow opportunities for interested citizens or groups to participate as formal interveners in the process.
 

 

Maine Public Service Commission

Office location: 26 Katherine Drive, Hallowell, ME 04347
Mailing address: 18 State House Station Augusta ME 04333-0018
Telephone: 207.287.3831
Website: www.maine.gov/mpuc


Our transmission prices are determined by the Federal Energy Regulatory Commission (FERC).

The Maine Public Utilities Commission (MPUC) accepts bids from competitive electricity suppliers to supply Standard Offer service for our customers who have not designated a competitive electricity supplier.

There are five components that make up a delivery price. The PUC separately sets the five pieces that make up our delivery prices.
 

  1. The distribution piece covers the costs of local power lines, meter readers, and bucket trucks. For most customers, this makes up the majority of their delivery price.
  2. The transmission piece covers the costs of large power lines and substations and is regulated by the Federal Energy Regulatory Commission.
  3. The stranded cost (Public Policy) piece covers costs associated with purchase power agreements to encourage renewable energy, state-mandated low-income assistance programs and energy efficiency programs.
  4. The conservation assessment piece funds energy efficiency initiatives.
  5. The Electricity Lifeline Program (ELP) provides assistance to qualifying residential customers.