56 CleanTech companies in United States
56 CleanTech companies in United States with 97 founders and decision-makers, led by New York. 64 verified founder emails. Updated 2026-10-03.
Key findings
- FindMeMail tracks 56 CleanTech companies in United States, with 97 founders and decision-makers listed.
- New York is the top city, with 5 of them (9%), followed by Houston (4).
- The most common team size is 1-10 employees (91% of companies).
- 10 (18%) were founded in the last three years.
- 28 have a recorded funding round; the most common is Seed (7).
- 35 companies (63%) have at least one verified founder email, 64 verified emails in total.
Breakdown
Top cities
- New York: 5 (9%)
- Houston: 4 (7%)
- Los Angeles: 3 (5%)
- San Francisco: 2 (4%)
- Middlesex: 1 (2%)
- Las Vegas: 1 (2%)
- Cambridge: 1 (2%)
- State College: 1 (2%)
Team size (employees)
- 1-10: 51 (91%)
- 11-50: 3 (5%)
- 501-1000: 1 (2%)
- 251-500: 1 (2%)
Latest funding round
- Seed: 7 (13%)
- Grant: 5 (9%)
- Non-equity Assistance: 3 (5%)
- Equity Crowdfunding: 3 (5%)
- Pre-Seed: 3 (5%)
- Debt Financing: 2 (4%)
- Convertible Note: 2 (4%)
- Undisclosed: 2 (4%)
Founded (last 10 years)
- 2017: 4 (7%)
- 2018: 4 (7%)
- 2019: 4 (7%)
- 2020: 3 (5%)
- 2021: 4 (7%)
- 2022: 2 (4%)
- 2023: 2 (4%)
- 2025: 8 (14%)
- 2026: 2 (4%)
Recently added CleanTech companies in United States
- Climate & Waste Systems Advisory — Weatherford, United States: Enterprise advisory and AI-enabled OS for municipal waste, climate, and governance.
- PoolLeads.ai — Middlesex, United States: PoolLeads.AI provides AI-driven lead generation for pool builders, service, and repair companies to connect with new customers.
- Apas Ventures — Sheridan, United States: Apas Ventures invests in sustainable innovation, flowing like water to empower founders building a cleaner, greener future.
- NEUUF — Los Angeles, United States: Non-Invasive Regenerative Tech, Renewable Energy, Mobility Clean Tech, Hardware
- SpaceLoop Systems, Inc — Sparks, United States: SpaceLoop Systems offers a platform that uses atomic-level recycling to process industrial waste.
- Kykloris — Cambridge, United States: Transforming seafood shell waste into high-value materials for next-generation applications.
- Liberty Fusion — Santa Fe, United States: Liberty Fusion develops plasma-based fusion energy systems designed for modular power generation.
- California Perovskite Technology — San Francisco, United States: California Perovskite Technology Inc is a technology company supplying perovskite-based solar modules.
- AICE Power — San Francisco, United States: Energy Management, Alerting, IoT Sensors, AI Automation, Building Efficiency, ClimateTech
- MassGain — Fremont, United States: We make biodegradable stretch wrap with performance and cost parity to traditional plastic wrap.
- Besstech — Troy, United States: Besstech LLC is a lithium-ion component design and engineering company, helping companies improve the performance of lithium ion component.
- Squeegee Cleaning Services — Birmingham, United States: Squeegee Cleaning Services is a cleaning company that provides window cleaning, power washing, and construction clean-up services.
- HHO Carbon Clean Systems — Paducah, United States: HHO Carbon Clean Systems, LLC offers hydrogen carbon cleaning for gas and diesel engines to remove carbon build-up and optimize performance.
- Pebble Creek Partners — Schaumburg, United States: Pebble Creek Partners offers consulting services to help companies grow and become more profitable, focusing on strategic planning, business case development,…
- Circa Systems — Philadelphia, United States: Transforming retail through product cycling for a zero waste and thriving future.
- Wype — Los Angeles, United States: Wype provides waterless car cleaning and detailing services.
- NeverBounce — Cleveland, United States: NeverBounce is a provider of email verification and list cleansing services.
- Rivalia Chemical Co. — New York, United States: American-made rare earths, produced from wastes
- MattressCycle — Pineville, United States: MattressCycle is a Charlotte NC-based start-up that aims to recycle 100 Million Mattresses by 2050 using scalable proprietary technology.
- Otto — Kearny, United States: Otto is an eco-friendly ridesharing app that pledges to have zero net CO2 contributions
- Jasmine Energy — Washington, United States: Jasmine is the easiest way to track prices, verify renewable energy generators, and buy & sell Energy Attribute Certificates (EACs/RECs)
- FoodWare — Berkeley, United States: FoodWareToGo provides smart, circular, and sustainable technology solutions for reducing food packaging waste and costs through reusable programs.
- Gartenzwerg Technologies — Palo Alto, United States: Smart Gardens with proprietary IoT technology and a gamified app enabling anyone to grow food from home effortlessly at the push of a button
- InfiSense — Boston, United States: InfiSense Builds the next generation of businesses with real-time sensing
- Norwich Technologies — White River Junction, United States: Norwich Technologies is a rapidly develop and commercialize promising innovations in clean technologies.
- Promethium — Las Vegas, United States: Promethium provides commercial HVAC air purification systems.
- CityFreighter — Santa Barbara, United States: CityFreighter offers electric trucks designed for urban deliveries.
- Zaiser Motors — Denver, United States: Electric Motorcycle Manufacturer
- Protospheric Products — Clearwater, United States: Protospheric is a product development company that develops materials and processes for disposable gloves and personal protective equipment.
- Uproot — New York, United States: Uproot helps food services meet demand for plant milk by offering the best varieties served from convenient dispensers.
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Frequently asked questions
How many CleanTech companies in United States are there?
FindMeMail currently lists 56 CleanTech companies in United States with at least one founder or decision-maker identified. The count updates daily as new companies are added.
Where are most CleanTech companies in United States based?
New York (5), Houston (4), Los Angeles (3).
How do I contact founders of CleanTech companies in United States?
64 verified founder emails are available for these companies on FindMeMail. Create a free account to get 50 free reveals, then buy one-time credit packs from $12.
Related reports
- Software companies in United States (3,675)
- Artificial Intelligence (AI) companies in United States (2,382)
- Seed-stage startups in United States (1,905)
- Information Technology companies in United States (1,861)
- Health Care companies in United States (1,647)
- E-Commerce companies in United States (1,545)
- SaaS companies in United States (1,304)
- Pre-seed startups in United States (1,096)
- Financial Services companies in United States (1,062)
- Manufacturing companies in United States (959)
- Consulting companies in United States (949)
- Internet companies in United States (824)
Methodology: counts include companies in the FindMeMail database with at least one identified founder or decision-maker. Data refreshes automatically as new companies are added.