Maine Green Power

What Maine Green Power does

Maine Green Power is a voluntary renewable energy program sponsored by the Maine Public Utilities Commission and managed under contract by 3Degrees Group, Inc. The program enables Maine electricity customers of Central Maine Power and Versant Power to match all or part of their monthly electricity use with Maine-made renewable energy by purchasing renewable energy certificates (RECs). RECs are sourced from a portfolio of in-state projects spanning hydroelectric, wind, solar, biomass, tidal, and geothermal facilities (e.g., Harris Hydro, Stetson Wind, Saddleback Ridge Wind, Fog Hill Solar, Maine Tidal). The program is delivered as a line item on the customer's existing utility bill — no installation, equipment, or contract is required, and participants may cancel at any time. The legal and operational structure is a state-sponsored program rather than a venture-backed company; the MPUC provides regulatory oversight, competitively selects the program manager, and reviews annual reports to ensure eligible Maine renewable resources are used.

The program serves two customer segments. Residential customers (homeowners, renters, apartment and condo residents, tiny-home owners) enroll in block sizes from 250 kWh ($4.95/month) up to 2,000+ kWh, with the 1-block (500 kWh at $8.95/month) tier cited as the most popular. Commercial customers enroll across four tiers — Participant (1–9 blocks), Supporter (10–19), Partner (20–49), and Leader (50+) — with tier-based benefits including website listings, digital participation badges, social media spotlights, custom participation certificates, and custom business profiles. Businesses purchasing 10 or more blocks qualify for a bulk rate of $6.45 per block, with a $64.50 monthly minimum.

The business model is recurring subscription revenue, billed via utility integration rather than direct invoicing. Go-to-market is direct-to-consumer and direct-to-business through the program's website, with utility billing providing the distribution layer. Reported scale includes "thousands of Mainers" residential subscribers and 100+ participating Maine businesses across diverse industries. Notable disclosed participants include Sterling Rope Inc. (Leader tier, matching 75,000 kWh/month), Brickell Brand LLC, Lamey Wellehan, Maine Employers Mutual, Rosemont Market, Wicked Joe LLC, Johnny's Selected Seeds, Ocean Renewable Power, Pleasant River Lumber, and Maine Coast Sea Vegetables. The program was established in 2016 following MPUC Order in Docket No. 2015-00339, which selected 3Degrees Group for an initial five-year operational term.

Name

Maine Green Power

Legal name

Maine Green Power

Website

https://megreenpower.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Maine Green Power is a state-sponsored voluntary renewable energy program that lets Maine electricity customers of CMP and Versant Power match their electricity use with Maine-made renewable energy certificates, billed as a line item on their utility bill. It serves both residential and commercial customers statewide and is managed by 3Degrees Group.

Ownership category

akta.pro rank

Product category

Renewable Energy Services

NAICS

Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric Services (4911)

akta.pro primary industry

Green Power Retailing & Bundled Supply (Energy + Certificates) (EUAGAFAE)

akta.pro secondary industries

REC/GO Retail Supply & Green Tariffs (Bundled/Unbundled) (EUAMAKAF), C&I Renewable Supply & Green Tariffs (Bundled RE, Sleeves, Utility Green Tariffs) (EUAGACAE), Certificate Retirement & Claims/Disclosure Management (Scope 2, Fuel Mix, Labeling) (EUAGAFAI)

Keywords

• Renewable energy certificates
• Voluntary green power program
• REC aggregation service
• Maine clean energy
• Utility bill renewable matching

Headquarters

HQ city

Portland

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. REC Block Subscriptions: Maine Green Power generates revenue through monthly subscription fees for renewable energy certificate (REC) blocks. Customers pay a fixed monthly rate added to their electric bill, starting at $4.95 per half-block (250 kWh). The program offers tiered pricing for residential and commercial customers, with bulk discounts available for commercial customers purchasing 10+ blocks at $6.45 per block. Revenue is recurring as customers remain enrolled until they actively cancel.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Maine Green Power is a voluntary renewable energy certificate (REC) aggregation program that enables Maine electricity customers of Central Maine Power and Versant Power to match their electricity usage with Maine-made renewable energy from sources including hydro, wind, solar, tidal, and biomass. Participants enroll online and pay a fixed monthly fee per block of matched kWh, which is added as a line item to their existing electric bill, with no installation or contracts required. The program is sponsored by the Maine Public Utilities Commission and managed by 3Degrees Group, Inc.

Product overview

Maine Green Power is a voluntary renewable energy program sponsored by the Maine Public Utilities Commission and managed by 3Degrees Group Inc. The program operates two core offerings: a Residential Program for homeowners and renters to match electricity usage with Maine-made renewable energy certificates (RECs), and a Business Program offering four participation tiers with marketing benefits. The program sources energy from a portfolio of Maine-based projects including hydroelectric, wind, solar, tidal, and biomass facilities. Pricing is block-based, starting at $4.95 per half-block (250 kWh) for residential customers, with businesses qualifying for bulk discounts at 10+ blocks.

Differentiator

Problem solved

Functional benefit

Products and services

• Maine Green Power Residential Program Voluntary residential program enabling homeowners and renters in Maine to match their electricity usage with Maine-made renewable energy by purchasing renewable energy certificates (RECs). Enrollment is online and the fee appears as a line item on the customer's existing CMP or Versant Power electric bill, with no installation or contracts.
• Maine Green Power Business Program Commercial program enabling Maine businesses to match their electricity use with Maine-made renewable energy across four participation tiers (Participant, Supporter, Partner, Leader), with tier-based marketing benefits including website directory listings, digital participation badges, social media spotlights, and custom business profiles.
• Maine Renewable Energy Sources Portfolio Curated portfolio of Maine-based renewable energy projects that supply the RECs backing the program, including hydroelectric facilities (Harris 2, Harris 3, Wyman Hydro 1, Millinocket Dam, Otis Hydro, Madison Hydro), wind (Saddleback Ridge Wind, Stetson Wind, Bingham Wind), solar (Fog Hill Solar), and tidal power (Maine Tidal).

Quantifiable outcome

• One block (500 kWh) of renewable energy reduces electricity-based carbon footprint through Maine-made clean energy
• +2 more outcomes

Named customers11 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered core.

• 3Degrees Group Inc.coreStrategic or Co-development Partner · 1 April 20163Degrees Group Inc. was selected by the Maine Public Utilities Commission via competitive proposal process in 2016 to manage and grow the Maine Green Power program for a five-year term beginning April 1, 2016. 3Degrees is described as a national leader in green power program services.
• Maine Public Utilities CommissioncoreStrategic or Co-development PartnerMaine Green Power is a program sponsored by the Maine Public Utilities Commission. The MPUC provides regulatory oversight, selects the program manager, and reviews annual reports to ensure only eligible Maine renewable energy resources are used.
• Central Maine Power (CMP)coreChannel Partner/ Reseller/ DistributorCentral Maine Power is the primary electricity distribution utility for Maine Green Power. Customers continue receiving electricity from CMP while Maine Green Power appears as a line item on CMP bills. CMP serves the majority of Maine Green Power residential and commercial participants.
• Versant PowercoreChannel Partner/ Reseller/ DistributorVersant Power (formerly Emera Maine) is an electricity distribution utility for Maine Green Power. Customers continue receiving electricity from Versant while Maine Green Power appears as a line item on Versant bills in northern/central Maine service areas.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Terrapass: Carbon offset and REC retailer serving individuals and businesses seeking to match electricity use with renewable energy and reduce carbon footprint. Comparable subscription-based retail green power model.
• Arcadia: Digital clean energy platform connecting customers to community solar, wind, and REC products nationwide. Comparable in providing tech-enabled access to renewable energy certificates, though broader in scope and asset-light.
• Watt Carbon: Clean energy marketplace and analytics platform that helps businesses source verified clean power and track emissions reductions. Adjacent tech-enabled competitor in the corporate clean energy procurement space.

Direct peers

• Renewable Choice Energy: REC procurement and marketing firm helping businesses and utilities source and claim renewable energy certificates. Operates in adjacent retail and B2B green power markets with comparable offerings.
• 3Degrees Group: National green power program operator that manages Maine Green Power on behalf of the MPUC. Operates similar voluntary REC/green pricing programs for utilities and states across the US; sister-company relationship and direct operator of the subject program.
• Green Mountain Energy: One of the largest retail renewable electricity providers in the US, serving residential and commercial customers in multiple states with wind and solar REC-backed plans. Closest large-scale direct competitor in voluntary green power retailing.
• CleanChoice Energy: Retail renewable energy supplier offering 100% renewable electricity to residential and commercial customers across multiple US states. Directly comparable business model of selling REC-backed renewable power to retail customers via subscription.
• Community Energy: Renewable energy developer and marketer that sells RECs and green power products to utilities, businesses, and retail customers. Comparable wholesale and retail REC supply model.

Broad incumbents

• Constellation Energy: Major US energy supplier offering green-e certified REC products and renewable power supply to commercial and residential customers. Overlaps with Maine Green Power's REC retailing but serves a much broader national footprint.
• ENGIE Resources: Large retail electricity supplier with green power products marketed to commercial and industrial customers across multiple US states. Broader incumbent competitor with overlapping renewable supply offerings.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks1 record

Key highlights6 records

Customer concentration

• Xx.com/megreenpower

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Maine Green Power