Best Energy Companies in Maine, United States
The 37 best Energy companies in Maine, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Faro Energy.
Our analysis of 171 Energy companies
$71.4b in tracked funding; 82% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy companies in Maine
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Faro Energy Developer of solar energy assets providing sustainable energy solutions | $56M | 48 mo ago | Series C | Sarah Chapman CEO | 2015 | WordPressMySQLPHP+24 | — | — |
| 2 | Shift Energy Developer and installer of solar hot water and hot air systems | $700K | 102 mo ago | Seed | Mick Dunn CEO | 2011 | — | — | — |
| 3 | Sweetbee Provider of alternative heating sources including wood pellets and fatwood | $295K | 120 mo ago | Deadpooled | Arthur House CEO | 2013 | — | — | — |
| 4 | Maine Standard Biofuels Recycles cooking oil into biofuels, heating oil, and green cleaning products | $85K | 18 mo ago | Seed | Jarmin Kaltsas Founder | 2006 | Squarespace CommerceSquarespaceTypeScript+20 | — | — |
| 5 | SeaChange Group Provider of religious services and community building | $20K | 61 mo ago | Seed | Geoff Lamdin Co-Founder | 2010 | — | 51 patents Glycerol‑based biodiesel fuel emulsions and liquid purification technologies for diesel engines | — |
| 6 | Wood & Sons Provider of wood pellets and related services for residential and commercial heat management solutions | — | 18 mo ago | Funding Raised | Dean Wood Co-Owner | 2017 | Squarespace CommerceSquarespaceStimulus+8 | — | — |
| 7 | Bachmann Industries Manufacturer of fabricated dampers and gas turbine exhaust systems | — | — | Acquired | Michael Sellinger CEO | 1991 | WordPressMySQLPHP+17 | — | — |
| 8 | central maine power company Central Maine Power is an electricity supplier company. | — | — | Public | Joseph Purington President & Chief Executive Officer | 1899 | LiferayTypeScriptJava+16 | — | — |
Top 6 Energy companies in Maine
#1
Seed · Portland, Maine · founded 2006$85Kraised▾
Recycles cooking oil into biofuels, heating oil, and green cleaning products. This biorefinery collects used cooking oil from restaurants and transforms it into cleaner-burning replacements for petroleum diesel and heating oil, as well as bio-based cleaning products. They offer grease collection services, ensuring used cooking oil is recycled into biodiesel and biodegradable soaps. They provide heating fuel and biodiesel for transportation, promoting sustainable energy alternatives. Their commitment to localism and sustainability helps reduce carbon footprint and supports a cleaner environment. They are focused on social impact by recycling waste and creating green products.
- Feb 2025Grant (prize money)—
- Oct 2009Seed$85K
#2
Series C · Brooklin, Maine · founded 2015 · 33 employees$55.6Mraised▾
Developer of solar energy assets providing sustainable energy solutions. The company specializes in the development and management of solar assets. It focuses on providing access to clean and sustainable energy. The company builds, operates, and maintains solar plants. The company provides management and monitoring of the entire process.
- Sep 2022Series C$55.6M
- Feb 2020Conventional Debt$3.5M
#3
Seed · Biddeford, Maine · founded 2011$700Kraised▾
Shift Energy is a company based in Maine that provides installation services for solar water heaters and other thermal systems. Services include design, construction, commissioning, engineering, space heating, ventilation and others. Specializes in air source heat pumps, solar hot water systems and solar hot air systems. Projects include a 2k gallon solar water heating system with 60 flat plate solar collectors, a solar air heating system for the University of New Hampshire and many others. Serving to regions include Maine, New Hampshire, Massachusetts, Connecticut, Rhode Island & Vermont.
- Mar 2018Seed$700K
#4
Deadpooled · Belfast, Maine · founded 2013$295Kraised▾
Provider of alternative heating sources including wood pellets and fatwood. The company offers wood pellets made from recycled hardwood with low moisture and ash content. Fatwood fire starters, a natural resinous product, are available. Additionally, the company provides wood bricks, blocks, and logs delivered on pallets.
- Sep 2016Seed$295K
#5
Seed · Brunswick, Maine · founded 2010 · 5 employees$20Kraised▾
Provider of religious services and community building. It offers weekly services focused on Christian teachings and fellowship. The organization aims to foster a supportive community for individuals seeking spiritual growth and connection. Activities include group gatherings, youth programs, and opportunities for community service. The focus is on building relationships and providing a welcoming environment for all.
- Aug 2021Conventional Debt$244.9K
- May 2017Seed$20K
- May 2017Conventional Debt—
#6
Funding Raised · Sanford, Maine · founded 2017—raised▾
Provider of wood pellets and related services for residential and commercial heat management solutions. The company offers efficient heating solutions for consumers and commercial establishments.
- Mar 2025Grant (prize money)—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Maine researches in energy storage
- University of Maine13
- MaineGeneral Medical Center1
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.