Best Environment Companies in Ohio, United States
The 182 best Environment companies in Ohio, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Contech.
Our analysis of 90 Environment companies
$38.2b in tracked funding; 89% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Environment companies in Ohio
| # | Company | Disclosed funding | Last round | Employees | Founded | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Contech Provider of stormwater management services | $426M | 172 mo ago | 1,143 | 1986 | — | Apple iCloud MailMicrosoft 365Microsoft ASP.NET+22 | 21 patents Aluminum alloy casting tooling and construction component manufacturing processes | 1 job opening |
| 2 | Aeroseal Provider of duct sealing services to homes and industries | $119M | 35 mo ago | 124 124 → 245 (+98%) | 1993 | Mark Modera Founder | WordPressApple iCloud MailMicrosoft 365+33 | — | 1 internship · 1 partnership |
| 3 | Corewater Technologies Provider of water treatment solutions 40Funding top 40%Talent bottom 45%Global bottom 25% All 3 signals ▾Fundingtop 40% Talentbottom 45% Globalbottom 25% Funding: Raised $6.2M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) Talent: 1 named leader on record rank vs industry peers · Fliar Intelligence Index 40/100 | $6M | 17 mo ago | — | 2019 | Dennis Flood President/CEO | — | — | 1 launch |
| 4 | MAR Systems Provider of water management services | $6M | 154 mo ago | 8 | 2005 | Claude Kennard Founder & Director | — | — | — |
| 5 | One Energy Turnkey developers | $5M | 92 mo ago | 62 | 2009 | Jereme Kent CEO | — | — | — |
| 6 | Community Energy Develops utility scale solar and wind power plants | $4M | 74 mo ago | 33 | 1999 | — | WordPressMySQLPHP+19 | — | — |
| 7 | ABS Materials Provider of water treatment and purification solutions | $4M | 150 mo ago | 9 | 2008 | — | — | — | — |
| 8 | Ecolibrium Solar Makes solar mounting structures | $4M | 98 mo ago | 23 | 2010 | Jan Werff ex-CEO | — | 39 patents Roof-mounted photovoltaic mounting hardware for sloped/low‑slope solar panel installations. | — |
| 9 | Northwestern Water & Sewer District Operator of water and sewer services, providing maintenance and infrastructure. | $4M | 182 mo ago | 43 | 1994 | — | WordPressApple iCloud MailMySQL+16 | — | — |
| 10 | Environmental Quality Management Provider of environmental compliance, remediation, and construction services | $2M | 182 mo ago | 226 | 1990 | — | Master SliderWordPressMySQL+27 | — | — |
| 11 | Nextronex Manufactures solar inverters for large scale projects | $2M | 133 mo ago | 8 | 2008 | — | — | 10 patents Grid‑connected solar photovoltaic inverter with integrated battery storage and dual AC/DC input | — |
| 12 | Quasar Energy Group Anaerobic digestion systems innovator for biomass management and nutrient services 24Funding top 49%Market bottom 46%Global bottom 29% All 3 signals ▾Fundingtop 49% Marketbottom 46% Globalbottom 29% Funding: Raised $2.4M across 2 rounds · 2 rounds over 18 yrs (0.1/yr) Market: 50 employees (top 46% of Waste & Water Management) rank vs industry peers · Fliar Intelligence Index 24/100 | $2M | 13 mo ago | 50 | 2006 | — | — | — | — |
| 13 | Nautica Windpower Provider of foundations & tower systems to wind energy sector | $2M | 176 mo ago | 2 | 2007 | Larry Viterna Founder & President | — | — | — |
| 14 | Avalon Holdings Provider of waste management services | $2M | 94 mo ago | 796 | 1998 | Ronald Klingle Chairman & CEO | — | 18 patents Portable acoustic and vibration mitigation panels for construction and transportation environments | — |
| 15 | SplashLink Online platform for water management services | $1M | 81 mo ago | 19 | 2011 | — | — | — | — |
| 16 | GoSun Stove Solar-powered ovens, coolers, chargers, and more for sustainable off-grid living | $671K | 77 mo ago | 10 | 2014 | Patrick Sherwin Founder & CEO | Cart FunctionalityShopifySearchanise+35 | — | 2 launchs |
| 17 | FWD:Energy Scrap tire recycling company | $657K | 137 mo ago | 2 | 2013 | — | — | — | — |
| 18 | Conductor Solar Developer of commercial solar power projects | $645K | 18 mo ago | 8 | 2022 | Marc Palmer Founder & CEO | — | — | — |
| 19 | Vadxx Provider of converts plastic to energy | $500K | 146 mo ago | 6 | 2009 | — | — | — | — |
| 20 | e-Cycle Provider of mobile device recycling services | $180K | 194 mo ago | 46 | 2005 | Tonia Irion Co-Founder | WordPressPleskApple iCloud Mail+26 | 109 patents Integrated damping and one-piece chain cage designs for bicycle rear derailleurs | — |
| 21 | AIMM Labs Provider of antimicrobial porous materials for water filters and treatment solutions | $171K | 24 mo ago | — | 2019 | Luis Estevez Founder & CEO | — | 5 patents Nanostructured carbon catalysts and ultrasonic/cavitation cleaning systems for industrial applications | 1 award |
| 22 | Rust Belt Riders Provider of waste food recycling services | $120K | 50 mo ago | 14 | 2014 | Michael Robinson Co-Founder | MODXPHPPython+22 | — | 4 partnerships |
| 23 | Clean Earth Rovers Provider of waste water management services | $100K | 47 mo ago | 7 | 2019 | — | — | — | — |
Top 12 Environment companies in Ohio
#1
Funding Raised · Cleveland, Ohio · founded 2006 · 50 employees$2.4Mraised▾
Anaerobic digestion systems innovator for biomass management and nutrient services. The company advances the biogas industry through design, construction, and operation of North American anaerobic digestion systems. It offers innovative technology solutions for waste disposal challenges, focusing on biomass management, digester design and build, laboratory services, nutrient services, system monitoring services, and transportation services. The company provides services to affiliates and collaborators, supporting projects with a team of licensed professionals. It addresses the growing demand for energy and the need for sustainable waste management through its comprehensive suite of services. This includes biomass management, digester design, laboratory analysis, nutrient recovery, system monitoring, and transportation, contributing to a circular economy and renewable energy production.
- May 2025Grant (prize money)$1.9M
- Sep 2013Grant (prize money)—
- Sep 2008Grant (prize money)$500K
#2
Series A · Oberlin, Ohio · founded 2019$6.2Mraised▾
CoreWater Technologies is a sustainable water treatment solutions company that has developed a system to safely and effectively remove PFAS chemicals from water. They have secured $1.3M in funding for their PFAS remediation technology. The company is led by President/CEO Dennis M. Flood and has a focus on industrial water treatment.
- Jan 2025Series A$4.9M
- Jan 2024Seed$1.3M
#3
Acquired · Miamisburg, Ohio · founded 1993 · 124 employees$119Mraised▾
Provider of duct sealing services to homes and industries
- Jul 2023Series B$67M
- Feb 2023Series B$30M
- Jun 2021Series A$22M
#4
Seed · Athens, Ohio · founded 2022 · 8 employees$645Kraised▾
Developer of a fintech platform intended to transform commercial solar deals. The company specializes in getting bids for developers and finding financing partners for commercial solar projects, thereby helping clients to get new connections and better project values.
- Dec 2024Seed$555K
- Jun 2023Seed$645K
#5
Acquired · West Chester, Ohio · founded 1986 · 1143 employees$425.7Mraised▾
Provider of stormwater management services
- Feb 2012Conventional Debt$125M
- Jun 2009Series D$17.7M
- Mar 2006Series D$408M
#6
Funding Raised · Dayton, Ohio · founded 2019$170.8Kraised▾
AIMM is a company that specializes in turning ordinary porous materials into antimicrobial products. They focus on innovative solutions to make materials more effective in various applications.
- Jun 2024Grant (prize money)$170.8K
#7
Acquired · Radnor, Ohio · founded 1999 · 33 employees$4.4Mraised▾
Community Energy develops utility scale solar and wind power projects and invites people to invest in the projects as well as sells solar generated electricity to consumer (both commercial and residential). The company has developed 700 MW of wind and 40 MW of solar projects as of Nov 2015 and has a presence of solar generation in the East, Mid-West and West.
- Apr 2020Grant (prize money)$500K
- Oct 2018Conventional Debt$1.9M
- Nov 2013Series A$400K
- Oct 2010Series A$4M
#8
Seed · Toledo, Ohio · founded 2009 · 62 employees$5.2Mraised▾
Turnkey developers
- Sep 2018Seed$2.2M
- Sep 2018Seed$1.9M
- Jan 2017Conventional Debt$80M
- Oct 2013Seed$1.1M
#9
Deadpooled · Wooster, Ohio · founded 2008 · 9 employees$4.2Mraised▾
Provider of water treatment and purification solutions
- Dec 2013Series B$4M
- Sep 2012Grant (prize money)$2.7M
- Aug 2012Grant (prize money)$739.2K
- Sep 2011Grant (prize money)$1M
#10
Acquired · Athens, Ohio · founded 2010 · 23 employees$4Mraised▾
Ecolibrium Solar manufactures solar racking systems under two series "Ecofoot2" for commercial PV installation and "EcoX" for residential PV installation. The company also make "EcoMount" for inverter installation in commercial projects and "EcoTray" for concealment and management of wires.
- Apr 2018Conventional Debt$1M
- Feb 2016Series A$3M
- Aug 2015Conventional Debt$2.2M
- May 2013Seed$1M
#11
Deadpooled · Cleveland, Ohio · founded 2005 · 8 employees$5.7Mraised▾
Developer of water-purification technology designed to purify water in an enhanced way. The company's water-purification technology offers proprietary processes for the removal of metal contaminants from water and industrial waste streams through the use of recycled alumina catalysts, enabling clients to have purified water in a cost-efficient way.
- Jul 2013Series B$4M
- Dec 2010Series B$220K
- Apr 2009Series B$1.5M
#12
Funding Raised · Bowling Green, Ohio · founded 1994 · 43 employees$3.8Mraised▾
Operator of water and sewer services, providing maintenance and infrastructure. They offer resources regarding payment, service establishment, and emergency alerts. The organization addresses service issues, rates, and frequently asked questions. It provides information on water quality, conservation, and backflow prevention. Sewer services include tapping procedures, grinder pump instructions, and programs for homeowners. Engineering information, business resources, and project updates are available.
- Mar 2011Grant (prize money)$1.2M
- Mar 2010Grant (prize money)$50K
- Jun 2009Grant (prize money)$2.5M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Environment coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Ohio researches in environmental monitoring
Ohio State University and Ohio EPA lead aquatic ecosystem and chemical sensor monitoring research, with recent work (8 of 12 papers post-2020) trending cautiously optimistic (mean stance 0.24) amid balanced breakthrough and concern findings.
- The Ohio State University8
- Ohio Environmental Protection Agency1
- Ohio University1
- Ohio Department of Agriculture1
- Ohio Aerospace Institute1
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.