Maine Electricity Rates: What to Know

Maine has some of the most expensive electricity in the continental United States. As of April 2026, the average residential rate is approximately 29.55 cents per kWh — roughly 74% above the national average of about 17 cents. The average monthly bill runs about $237, compared to a national average of roughly $152. Between January 2025 and January 2026, Maine's residential electricity prices increased 17.6% — the largest year-over-year increase of any state in the country.

The reasons are structural: Maine sits at the end of constrained New England natural gas pipelines, pays into a regional transmission system that costs billions, and is served by two investor-owned utilities — Central Maine Power and Versant Power — that have drawn sustained consumer frustration over billing practices, rate increases, and foreign corporate ownership. Meanwhile, the state's municipal utilities quietly charge 50-60% less. Understanding what drives Maine's costs, what options you have, and where the system is headed gives you the foundation to manage bills that are already high and still climbing.

How Maine's Electricity Market Works

Maine was one of the first states to deregulate, passing restructuring legislation in 1997 with full retail choice available since 2000. Under this model, the state's investor-owned utilities — CMP and Versant — handle delivery only. They do not generate electricity. The supply side is open to competition.

The Maine Public Utilities Commission (PUC) regulates delivery rates (transmission and distribution), administers the Standard Offer competitive bidding process, and licenses all competitive electricity providers. The Maine Office of the Public Advocate represents consumers in utility proceedings and provides guidance on supply options.

Maine is part of ISO New England (ISO-NE), the regional grid operator managing the wholesale electricity market for all six New England states. About 50% of New England's power comes from natural gas plants, and CMP and Versant account for 8.4% of regional transmission revenue requirements.

How Your Bill Is Split

Component	Share of Total Bill	What It Covers
Supply (~40-50%)	Set by Standard Offer bidding or competitive supplier	Cost to generate/purchase electricity
Delivery (~50-60%)	Regulated by PUC	Transmission (regional) + distribution (local poles, wires, meters)

Standard Offer vs. Competitive Supply

If you do not choose a competitive electricity provider, you automatically receive Standard Offer service. The PUC sets Standard Offer rates annually through competitive bidding, with rates changing on January 1 for residential customers.

For 2026, the CMP Standard Offer supply rate is 12.72 cents per kWh — up from 10.61 cents in 2025, a 20% increase and the highest Standard Offer rate in CMP's history.

Competitive suppliers are licensed by the PUC and may offer fixed-rate, variable-rate, or green energy plans. You can switch between Standard Offer and competitive suppliers at any time. The delivery portion of your bill stays the same regardless of your supply choice.

What Mainers Actually Pay

By Utility

The rate disparity between Maine's utilities is one of the starkest in the country:

Utility	Type	Approx. All-In Rate (2026)	Change Since 2020
Central Maine Power	Investor-owned (Avangrid/Iberdrola)	~27 cents/kWh	+42%
Versant Power	Investor-owned (ENMAX)	~32 cents/kWh	+52%
Eastern Maine Electric Co-op	Cooperative	~14.9 cents/kWh	—
Madison Electric Works	Municipal	~13.5 cents/kWh	—
Kennebunk Light & Power	Municipal	~12.5 cents/kWh	—

Read that table again. Municipal utilities in Maine charge roughly half what CMP charges and less than 40% of what Versant charges. Both investor-owned and consumer-owned utilities buy power on the same wholesale market and pay into the same regional transmission system — yet the bills are dramatically different. That gap was central to the Pine Tree Power debate (more on that below).

Rate Trends

Maine's electricity prices have followed a volatile path:

• 2020: CMP Standard Offer was 7.30 cents/kWh (supply only). Total bills were significantly lower.
• 2022: Russia's invasion of Ukraine disrupted global gas markets. Standard Offer spiked to ~11.8 cents.
• 2023: Supply rates exceeded 16 cents/kWh — the highest point.
• 2024: Rates eased somewhat.
• 2025: CMP Standard Offer dipped to 10.61 cents.
• 2026: Jumped to 12.72 cents — the highest Standard Offer in CMP history.

Over the past decade, Maine's average retail price rose from 12.65 cents to 19.62 cents per kWh. Since 2015, prices have increased 78% — more than double the nationwide rate of increase.

If you want to understand every line item on your bill, our guide on how to read your electric bill and spot overcharges walks through each component.

Major Utilities

Central Maine Power (CMP)

CMP is Maine's largest utility, serving southern and central Maine. It is owned by Avangrid, a subsidiary of Spanish multinational Iberdrola. CMP handles delivery only — it does not generate electricity.

CMP has become one of the most controversial utilities in the country. The biggest flashpoint was the billing scandal of 2017-2019. In October 2017, CMP launched a $57 million billing system called "SmartCare" that coincided with a major windstorm. The system was not properly tested. Hundreds of thousands of customers received wildly inaccurate bills — some charged 200-300% more than prior years. An estimated 100,000 customers were overcharged by at least 50%. An investigation found that managers had skipped critical testing. The PUC imposed a $10 million fine — the single largest financial penalty for a utility in Maine history.

CMP consistently ranks among the lowest-rated utilities nationally for customer satisfaction. Most recently, the company asked regulators to raise distribution rates by roughly $35 per month between 2026 and 2031 to hire hundreds more workers and upgrade aging infrastructure. The initial request was dismissed, but CMP can still pursue increases through standard rate case proceedings.

Versant Power

Versant Power serves northern and eastern Maine and is owned by ENMAX, a Calgary-based Canadian energy company. Versant operates two districts:

• Bangor Hydro District: Serves the Bangor region. Bills increased roughly $11 per month ($132 per year) for 2026.
• Maine Public District: Serves far northern Aroostook County. Bills increased roughly $16 per month (~$200 per year) for 2026.

Versant's all-in residential rate of approximately 32 cents per kWh makes it one of the most expensive utilities in the continental United States. ENMAX spent approximately $8 million fighting the Pine Tree Power ballot initiative in 2023.

Municipal and Cooperative Utilities

Eight municipal or cooperative utilities operate in Maine, and they tell a different story. Kennebunk Light & Power charges roughly 12.5 cents per kWh. Madison Electric Works charges about 13.5 cents. Eastern Maine Electric Cooperative charges about 14.9 cents.

These consumer-owned utilities consistently charge 50-60% less than CMP and Versant. They buy power on the same wholesale market and pay into the same regional transmission system. The difference is in the distribution business model — cooperative and municipal utilities operate on a not-for-profit basis, with local governance and no shareholder returns to fund.

The Pine Tree Power Debate

In November 2023, Maine voters considered Question 3 — a proposal to create "Pine Tree Power," a non-profit, consumer-owned utility that would purchase CMP and Versant's transmission and distribution assets. The utility would have been governed by a 13-member elected board with a private third-party operator.

Supporters argued that consumer-owned utilities consistently deliver lower rates — as Maine's own municipal utilities prove. Opponents cited the estimated $13+ billion acquisition cost and transition risks. The utilities' parent companies poured roughly $26 million into opposition campaigns ($18 million from Avangrid through "Maine Affordable Energy" and $8 million from ENMAX through "Maine Energy Progress").

Voters rejected the proposal by roughly 2-to-1. The defeat ended the immediate push for a consumer-owned utility, and no active campaign has emerged for 2025-2026. But the underlying frustration that drove the initiative — high rates, poor service, foreign corporate ownership — has not gone away.

Why Maine's Electricity Is So Expensive

1. Natural Gas Pipeline Constraints

This is the structural problem at the heart of New England's electricity costs. Roughly 50% of New England's electricity comes from natural gas plants. But the region has constrained gas pipeline capacity — there is not enough pipeline capacity to deliver gas to both power plants and home heating systems on the coldest winter days.

When pipelines hit capacity during cold snaps, the region must turn to imported LNG or oil, which costs significantly more. Natural gas prices in New England during peak winter can spike to multiples of the benchmark Henry Hub price. In 2025, wholesale natural gas prices were 58% higher than the previous year.

Making matters worse, U.S. LNG exports are projected to double by 2030. As more domestic gas is shipped overseas, the structural tightness in New England's gas supply gets worse. Maine's electricity prices are directly correlated with natural gas market volatility, and the state sits at the geographic end of the pipeline — the last to get gas when supply is tight, the first to see prices spike.

2. Rising Transmission Costs

CMP customers began paying 7% more starting January 1, 2025, for regional transmission upgrades. New England utilities' total transmission revenue requirements for 2025 hit $3.3 billion — up 16% from the prior year. CMP and Versant account for 8.4% of that regional total.

ISO-NE issued its first competitive RFP for longer-term transmission investments in April 2025, with proposals ranging from $1 billion to $4 billion. These costs flow directly to ratepayers across New England, and Maine's share is significant.

3. Distribution Rate Increases

Both CMP and Versant have pursued distribution rate increases to fund grid modernization and infrastructure upgrades. CMP's request to raise distribution rates by roughly $35 per month over five years reflects aging infrastructure in southern Maine that requires significant capital investment. Even when the PUC approves less than utilities request, the approved amounts have driven meaningful bill increases.

4. Standard Offer Volatility

Because Standard Offer rates are set through annual competitive bidding, they reflect wholesale market conditions — which can swing dramatically. Rates plunged during COVID-19 in 2020, spiked after Russia's invasion of Ukraine in 2022, eased in 2024, and jumped again in 2026 to the highest Standard Offer rate in CMP history. This volatility makes budgeting for electricity costs difficult, especially for households on fixed incomes.

5. Electrification Adding Demand

Maine has aggressively promoted heat pumps and electric vehicles, both of which increase electricity demand. Efficiency Maine's generous rebate programs have driven significant heat pump adoption. While heat pumps reduce total energy costs for most households (replacing expensive oil heat), they add to electricity demand — which, combined with constrained supply, puts upward pressure on wholesale prices.

Solar and Renewable Energy in Maine

Residential Solar — Still Strong

Maine offers 1:1 net energy billing (NEB) at the full retail rate for residential rooftop solar. This means every kWh your panels generate and send to the grid offsets a kWh you would otherwise buy at the full retail price. With rates at 27-32 cents per kWh, each solar kWh is worth significantly more than in most states. Credits roll forward monthly with an annual true-up.

Maine also provides:

• 100% property tax exemption statewide for solar installations — your property taxes do not increase
• Sales tax exemption on solar equipment (5.5% savings on the purchase)
• No state solar tax credit

Federal Tax Credit — Expired

The 30% federal Residential Clean Energy Credit expired on December 31, 2025, eliminated early by the One Big Beautiful Bill Act signed July 4, 2025. Solar panels, batteries, and geothermal systems installed in 2026 or later do not qualify. Battery systems acquired through a solar lease or PPA may still qualify under the commercial ITC (Section 48E) through July 4, 2026.

Community Solar — Effectively Ended

Maine was the number one state in the country for community solar capacity per capita before the passage of LD 1777 in June 2025. Community solar capacity surged from 88 MW in 2019 to 936 MW in 2025, bringing over $1 billion in private investment to the state and delivering 15% monthly bill savings to subscribers.

LD 1777 effectively ended new community solar development in Maine. New projects had until the end of 2025 to enroll in net energy billing. Compensation for existing community solar arrays was cut by approximately 20%, new fees were added, and rates were decoupled from overall electric prices. Maine energy officials must develop a replacement renewable energy incentive plan by September 2026.

Existing community solar subscriptions continue but with reduced benefits. This was one of the most dramatic clean energy policy reversals in the country — going from first in per capita community solar to effectively shutting the program down within a single legislative session.

Offshore Wind — Gulf of Maine

The Gulf of Maine has an estimated 156 GW of offshore wind capacity within 50 miles of shore — among the best wind resources in the world. Critically, winds are strongest in winter, when Maine's electricity demand and prices peak. Maine has set a target of 3 GW of offshore wind by 2040.

The Maine Research Array (MeRA) is a proposed 10-12 floating turbine project of approximately 150 MW, targeted for 2026-2027. The Gulf of Maine's deep waters require floating offshore wind technology — platforms that are anchored rather than fixed to the seabed — making this a frontier for US offshore wind development.

ISO-NE received six proposals for Maine grid transmission projects to harness offshore wind in October 2025. If these projects move forward, offshore wind could eventually provide a meaningful hedge against natural gas price volatility — producing the most power during the exact season when gas constraints drive prices highest.

Renewable Portfolio Standard

Maine's RPS requires 90% renewable energy, with a Clean Energy Standard targeting 100% clean energy by 2040 — one of the most ambitious goals in New England.

Strategies to Lower Your Maine Electricity Bill

1. Shop for a Competitive Supplier

Maine's retail choice means you can choose a competitive electricity supplier for the supply portion of your bill. Compare offers against the current Standard Offer rate (12.72 cents/kWh for CMP in 2026). Fixed-rate plans can protect you from the year-to-year Standard Offer volatility. The Maine Office of the Public Advocate provides guidance on evaluating supplier options. Switching is free, and you can return to Standard Offer at any time.

2. Consider CMP's Time-of-Use Rate

CMP offers an optional residential TOU rate (Rate A-TOU) with lower per-kWh delivery charges during off-peak hours. The break-even point is roughly 86% of usage in off-peak periods. If you can shift your heaviest electricity use — laundry, dishwasher, EV charging, water heating — to off-peak hours, TOU can reduce your delivery costs. Note that TOU applies only to the delivery component, not supply.

3. Install Rooftop Solar

With all-in rates of 27-32 cents per kWh, every solar kWh you generate is worth far more than in most states. Maine's 1:1 net energy billing at full retail rate, 100% property tax exemption, and sales tax exemption make rooftop solar a strong investment even without the federal tax credit. Payback periods are shorter in Maine than in many states simply because the per-kWh value of solar generation is so high. Our guide on choosing the best solar panels for your home covers the selection process.

4. Take Advantage of Efficiency Maine Rebates

Efficiency Maine offers some of the most generous heat pump rebates in the country:

• Low-income households: Up to $3,000 per heat pump unit + up to $8,000 for weatherization
• Moderate-income (AGI below $70K single / $100K married): Up to $2,000 per unit + $6,000 for weatherization
• All ratepayers: Up to $1,000 per unit + $4,000 for weatherization
• $500 whole-home bonus when heat pump and weatherization are completed together

Efficiency Maine has confirmed no plans to modify heat pump incentives after the federal tax credit expiration. If you are heating with oil — still common in Maine — a heat pump can dramatically reduce your total energy costs, even though it shifts some spending from oil to electricity.

5. Weatherize Your Home

Maine's cold winters make weatherization one of the highest-return investments available. Air sealing, insulation, and window upgrades reduce the total energy needed to keep your home comfortable. Through MaineHousing and local Community Action Agencies, income-eligible households can access free weatherization grants. Even for households above the income threshold, Efficiency Maine's weatherization rebates (up to $4,000-$8,000 depending on income) make the upfront cost manageable.

6. Monitor Your Usage

A home energy monitor reveals which circuits and appliances are consuming the most electricity. At Maine's rates, finding and eliminating a 200-watt phantom load saves roughly $45 per year. Common culprits in Maine homes include old oil burner circulation pumps, basement dehumidifiers, and aging refrigerators.

7. Replace Oil Heating Equipment

If you heat with oil, the combination of an Efficiency Maine heat pump rebate and the electricity savings from switching can make heat pump adoption a clear financial win — even at Maine's high electricity rates. A heat pump uses roughly one-third the energy of electric resistance heat and competes favorably with oil at current prices. Our guide on best heat pumps for home 2026 covers the options.

Low-Income Assistance Programs

LIHEAP / Home Energy Assistance Program (HEAP)

Administered by MaineHousing, HEAP helps eligible homeowners and renters pay heating costs.

• FY 2026 funding: $38.3 million (including $1.28 million from Infrastructure and Jobs Act)
• Benefits: $88 minimum to $1,012 maximum
• Application period: August 1, 2025 through May 29, 2026 (or until funds exhausted)
• How to apply: Online, by phone, or in person at your local Community Action Agency (CAA)

Energy Crisis Intervention Program (ECIP)

For HEAP-eligible households facing a winter heating emergency:

• Benefit: One-time payment of up to $500
• 2025-2026 season: Opened December 3, 2025
• Eligibility: Must already qualify for HEAP

Low-Income Assistance Program (LIAP)

Helps qualified low-income electricity consumers pay electricity costs. Household income must be at or below 150% of Federal Poverty Guidelines.

CMP's Electricity Lifeline Program (ELP): Up to $1,200 annually credited to electric bills, based on household income and estimated usage.

Arrearage Management Program (AMP)

Available through both CMP and Versant Power, AMP helps eligible low-income customers who are behind on their electricity bills.

• Forgiveness: Up to 100% of past-due balance, up to $6,000
• How it works: Monthly forgiveness credits (1/12 of total per month, capped at $500/month) applied when you pay your current bill on time
• Eligibility: Must qualify for HEAP or LIAP, have $500+ past-due balance at least 90 days old, and not have participated in AMP in the previous 6 years

Weatherization and Efficiency Programs

• Weatherization grants through MaineHousing and local CAAs for income-eligible households
• Central Heating Improvement Program (CHIP): Repair or replacement of heating systems for qualifying households
• Efficiency Maine heat pump and weatherization rebates available to all income levels (higher rebates for lower-income households)

Getting Started

If you are not sure which programs you qualify for, contact your local Community Action Agency or visit MaineHousing.org. You can also call 2-1-1 for referrals.

Frequently Asked Questions

What is the average electricity rate in Maine?

As of April 2026, Maine's average residential electricity rate is approximately 29.55 cents per kWh — about 74% above the national average. Rates vary significantly by utility: CMP customers pay roughly 27 cents per kWh all-in, while Versant Power customers pay around 32 cents. Municipal utilities and cooperatives charge significantly less — often 12-15 cents per kWh.

Why is electricity so expensive in Maine?

Several structural factors drive high rates: New England's heavy dependence on natural gas (~50% of generation) combined with constrained pipeline capacity that causes winter price spikes; rising regional transmission costs ($3.3 billion in 2025, up 16%); distribution infrastructure upgrade costs; Maine's position at the geographic end of the gas pipeline; and volatile wholesale market prices. U.S. LNG exports are projected to double by 2030, adding further pressure.

Can I choose my electricity supplier in Maine?

Yes. Maine deregulated its electricity market in 1997. All residential customers can choose a competitive supplier for the supply portion of their bill. If you do not choose one, you automatically receive Standard Offer service at rates set through PUC-administered competitive bidding (12.72 cents/kWh for CMP in 2026). Your delivery utility — CMP or Versant — stays the same regardless of your supply choice.

What happened to Pine Tree Power?

In November 2023, Maine voters rejected Question 3 — a proposal to create a non-profit, consumer-owned utility that would purchase CMP and Versant's transmission and distribution assets — by roughly 2-to-1. The utilities' parent companies spent a combined $26 million opposing the measure. Supporters pointed to Maine's own municipal utilities charging 50-60% less as evidence that consumer ownership delivers lower rates. The defeat ended the immediate push, though the frustration that drove the initiative remains.

Is solar worth it in Maine?

Maine's high electricity rates (27-32 cents/kWh) actually make solar more financially attractive than in most states — each kWh you generate offsets a higher-cost purchase. Maine still offers 1:1 net energy billing at full retail rate for residential rooftop solar, plus 100% property tax and sales tax exemptions. The 30% federal tax credit expired December 31, 2025, which increases upfront costs, but the high per-kWh value of generation and remaining state incentives make payback periods competitive with many states that have lower rates but better federal incentives.

What happened to community solar in Maine?

Maine went from virtually no community solar to the number one state per capita in just six years, with capacity growing from 88 MW in 2019 to 936 MW in 2025. Then LD 1777, signed in June 2025, effectively ended new community solar development — cutting compensation for existing projects by roughly 20%, adding new fees, and closing enrollment for new projects. Existing subscriptions continue with reduced benefits. State energy officials must develop a replacement incentive plan by September 2026.

What assistance is available if I cannot pay my Maine electric bill?

Multiple programs exist: HEAP provides $88-$1,012 in heating assistance through MaineHousing. ECIP offers up to $500 for winter heating emergencies. CMP's ELP Program provides up to $1,200 per year in bill credits. The Arrearage Management Program forgives up to $6,000 in past-due balances through CMP or Versant. Efficiency Maine offers heat pump rebates up to $9,000 for low-income households. Weatherization grants improve home efficiency at no cost to qualifying families. Contact your local Community Action Agency or call 2-1-1 to get started.

Your Maine Electricity Action Plan

This week:

1. Pull up your most recent bill and identify your supply rate (Standard Offer or competitive supplier), delivery charges, and total monthly kWh usage. Our guide on how to read your electric bill and spot overcharges explains each line item.
2. Compare competitive supplier offers against your current Standard Offer rate. The Maine Office of the Public Advocate provides guidance. Switching is free.
3. Check your 12-month usage history. Note winter peaks — they reveal how much your heating system is driving your electric bill.

This month:

4. Evaluate CMP's TOU rate if you can shift 86%+ of your usage to off-peak hours. EV owners, heat pump users, and people who work during the day are often good candidates.
5. If you heat with oil, contact Efficiency Maine about heat pump rebates. With rebates up to $3,000 per unit (low-income) plus weatherization support, the switch from oil to heat pump heating can pay for itself quickly.
6. If your income qualifies, apply for HEAP through your local Community Action Agency and ask about weatherization grants.
7. Seal air leaks around windows, doors, attic hatches, and electrical outlets. At Maine's rates, reducing heating energy waste has an outsized financial impact.

This year:

8. Get solar quotes from multiple installers. At 27-32 cents per kWh, the value of each solar kWh you generate is among the highest in the country. Maine's 1:1 net energy billing, property tax exemption, and sales tax exemption remain strong incentives. Our guide on choosing the best solar panels for your home covers the decisions.
9. If you have an existing community solar subscription, monitor the changes from LD 1777 — compensation was cut roughly 20% and new fees added. Evaluate whether your subscription still makes financial sense.
10. Invest in insulation and weatherization, especially if your home is older. Efficiency Maine rebates cover $4,000-$8,000 of weatherization costs depending on income. The $500 whole-home bonus for combining heat pump installation with weatherization makes doing both together particularly cost-effective.

If you are struggling right now:

11. Contact your local Community Action Agency or call 2-1-1 for immediate referrals.
12. Apply for HEAP through MaineHousing — benefits range from $88 to $1,012.
13. Ask about the Arrearage Management Program through CMP or Versant if you have $500+ past due. Up to $6,000 can be forgiven.
14. Contact CMP about the ELP program for up to $1,200 per year in bill credits.
15. Call your utility about payment arrangements. Do not wait for a disconnection notice.

For the long term:

16. Watch the Standard Offer rate announcement each November for the following January 1 change. This single number determines roughly 40-50% of your bill and can swing dramatically year to year.
17. Follow offshore wind development in the Gulf of Maine. If the 3 GW target materializes by 2040, it could provide a meaningful hedge against natural gas price volatility — producing the most power during winter when gas constraints drive prices highest.
18. Monitor what replaces community solar after LD 1777. State energy officials must develop a replacement incentive plan by September 2026. The outcome will shape renewable energy options for Mainers going forward.
19. Budget for continued rate pressure. Natural gas pipeline constraints, rising LNG exports, regional transmission investments, and utility distribution rate cases all point to sustained upward pressure on Maine electricity costs. Every efficiency improvement and solar kWh you generate compounds in value as rates rise.

Maine's electricity costs are driven by forces that are largely regional and global — New England's gas pipeline bottleneck, wholesale market volatility, and transmission system costs that are shared across six states. The state's investor-owned utilities add their own layer of cost through distribution rate increases and corporate overhead that consumer-owned utilities avoid. What you can control is how much electricity you use, where your supply comes from, what efficiency investments you make, and whether you access the assistance and rebate programs that exist. At rates approaching 30 cents per kWh, every action you take to reduce consumption or generate your own power delivers a bigger return than it would almost anywhere else in the country.