Best Environment Tech Companies in Washington, United States
The 129 best Environment Tech companies in Washington, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Porch Group.
Our analysis of 83 Environment Tech companies
$16.0b in tracked funding; 90% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Environment Tech companies in Washington
| # | Company | Disclosed funding | Last round | Employees | Founded | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Porch Group Provides software & service to home improvement industries | $718M | 38 mo ago | 1,800 | 2013 | Matt Ehrlichman Founder | Cart FunctionalitySquarespace CommerceSquarespace+13 | — | — |
| 2 | INENTEC Technology developer for conversion of wastes to energy | $230M | 66 mo ago | 25 25 → 28 (+12%) | 1995 | Daniel Cohn Co-Founder | WixSentryBootstrap+12 | 81 patents Electromagnetic fluidized‑bed high‑temp processing for hydrogen, carbon capture, and PFAS destruction | — |
| 3 | LevelTen Energy Online renewable energy PPA marketplace | $137M | 23 mo ago | 146 | 2016 | Bryce Smith Founder & CEO | Webflow EcommerceWebflowAsana+24 | — | 1 job opening |
| 4 | Omnidian Provider of monitoring and maintenance solutions for solar PV systems | $81M | 13 mo ago | 192 | 2015 | David Kenny Co-Founder & Chief Operating Officer | WordPress Block EditorwpBakeryWordPress+41 | — | — |
| 5 | Deako Manufacturer of modular smart lighting systems and related accessories | $61M | 23 mo ago | 21 | 2015 | — | Cart FunctionalityWordPressMySQL+47 | 30 patents Patents concentrated in computing, sensing & instrumentation | 1 launch |
| 6 | WISErg Provider of technological solutions that convert food waste into premium organic liquid fertilizers | $57M | 101 mo ago | 41 | 2010 | — | — | 24 patents Organic waste stabilization, pathogen mitigation, and microbial detection technologies | — |
| 7 | Optimum Energy SaaS-driven HVAC optimization software for commercial spaces | $41M | 115 mo ago | 47 47 → 106 (+126%) | 2005 | Larry Stapleton CEO & President | WordPressApple iCloud MailMicrosoft 365+28 | 75 patents Patents concentrated in mechanical & energy engineering | 5 job openings |
| 8 | Inspectify Provider of SaaS-driven inspection management services for professionals and homeowners | $33M | 20 mo ago | 34 34 → 75 (+121%) | 2019 | Josh Jensen Co-Founder & CEO | Cart FunctionalityRubyTrix+33 | — | 1 launch |
| 9 | Membrion Developer of membranes for the flow battery market | $32M | 12 mo ago | 29 | 2016 | Greg Newbloom President & CEO | — | 39 patents Ceramic ion‑exchange membranes for selective capture and separation of chemicals | — |
| 10 | Carbitex Provider of carbon-fibre induced materials for the fashion industry 48Product top 25%Funding top 32%Moat top 32%Innovation top 33% All 11 signals ▾Producttop 25% Fundingtop 32% Moattop 32% Innovationtop 33% Patentstop 33% Growthtop 40% Talentbottom 49% Techbottom 42% Newsbottom 37% Marketbottom 35% Globalbottom 33% Product: 7 distinct product lines · Company stage: Series C Funding: Raised $28.0M across 6 rounds · 6 rounds over 10 yrs (0.6/yr) rank vs industry peers · Fliar Intelligence Index 48/100 | $28M | 20 mo ago | 43 43 → 26 (-40%) | 2012 | Junus Khan Founder & President | Webflow EcommerceWebflowcore-js+13 | 43 patents Anisotropic fiber‑reinforced composites for puncture‑resistant footwear inserts | — |
| 11 | Evrnu Provider of sustainable fabrics from recycled cloths | $27M | 26 mo ago | 22 | 2014 | Christopher Stanev Co-Founder & President | Node.jsTailwind CSSReact+9 | — | — |
| 12 | Powerit Solutions Demand response solutions | $26M | 145 mo ago | 22 | 2006 | Kevin Klustner CEO & Board Director | — | 4 patents Smart power demand management and automated charging systems for electrical grids | — |
| 13 | APANA Sensors and cloud-based analytics platform for water leak detection | $19M | 86 mo ago | 17 | 2012 | — | — | 31 patents Low‑power IoT smart metering with centralized data collection and consumption analytics | — |
| 14 | Nori Provider of carbon dioxide removal marketplace | $19M | 38 mo ago | 43 | 2017 | Paul Gambill Co-Founder & CEO | — | — | — |
| 15 | StormSensor Developer of IoT enabled solution to track and prevent stormwater pollution or flooding | $19M | 54 mo ago | 30 | 2015 | — | — | 14 patents Real-time stormwater flow and depth sensing with tidal decoupling for flood risk modeling | — |
| 16 | Climate Vault Provider of solutions for organizations and project developers to mitigate emissions | $16M | 22 mo ago | 41 | 2020 | — | — | — | — |
| 17 | Ridwell Provider of convenient hard-to-recycle item pickup services | $15M | 6 mo ago | 177 177 → 99 (-44%) | 2018 | Ryan Metzger Co-Founder & CEO | SanityApple iCloud MailGoogle Workspace+26 | — | — |
| 18 | Calico Energy Connectivity platform for integration of all small grid appliances | $13M | 104 mo ago | 24 24 → 29 (+21%) | 2004 | Matthew Haak Co- Founder & Director | — | — | — |
| 19 | Wally Provider of connected water leak detectors | $13M | 136 mo ago | 11 | 2012 | Shwetak Patel Co-Founder | — | 2 patents Personalized marketing systems for generating and delivering targeted offers | — |
| 20 | PowerLight Wireless power delivery systems using laser beams to transmit electricity | $12M | 9 mo ago | 33 | 2007 | Tom Nugent co-founder | WordPressMySQLPHP+22 | 41 patents Integrated solar PV mounting, tracking, and building‑integrated roofing/shingle systems. | — |
| 21 | Allumia IoT and AI-driven energy management solutions | $10M | 51 mo ago | 37 | 2013 | Quintin Barnes Co-Founder & VP | — | — | 1 partnership |
| 22 | Drift Offering solutions for energy trading and tracking | $9M | 103 mo ago | 3 | 2015 | Ed McKenzie Co-Founder | — | — | — |
| 23 | Peregrine Hydrogen Green hydrogen production | $8M | 11 mo ago | 6 | 2023 | Stefan Omelchenko Co-Founder / VP of Operations and Strategy | — | 20 patents Efficient sulfur‑dioxide depolarized electrolysis for low‑carbon hydrogen and sulfuric acid production | — |
| 24 | Oscilla Power Provider of wave energy harvesting system | $7M | 46 mo ago | 20 | 2009 | Balky Nair President and CEO | WixSentryBootstrap+12 | 147 patents Wave energy conversion systems and marine vehicle power integration | 1 award |
| 25 | Optio3 IoT based web platform to monitor energy consumption in commercial buildings | $6M | 73 mo ago | 15 | 2016 | — | — | — | — |
| 26 | FlexCharging Provider of electric vehicle charging solutions | $6M | 44 mo ago | 15 | 2017 | Brian Grunkemeyer Founder & CEO | — | 18 patents Smart electric vehicle charging control and grid demand‑response scheduling systems | — |
| 27 | Myno Carbon Provider of bio-char from carbon removal facilities | $5M | 36 mo ago | 13 | 2020 | Thor Kallestad Founder & CEO | WordPressMySQLPHP+36 | — | — |
| 28 | Lagotek Wireless Home Automation | $5M | 197 mo ago | — | 2005 | Eugene Luskin Founder & CEO2 | — | 10 patents Distributed wireless IoT networking for home and commercial electrical automation | — |
| 29 | Molecule Works Provider of water treatment solutions | $4M | 22 mo ago | — | 2015 | Wei Liu CEO | — | — | — |
| 30 | Emissol Provider of air pollution control services | $4M | 71 mo ago | — | 2013 | Mansour Masoudi Founder | Wix eCommerceWixSentry+15 | 11 patents Patents concentrated in mechanical & energy engineering | — |
| 31 | Cutsforth Provider of asset monitoring, brush rigging, and electrical system maintenance services | $4M | 13 mo ago | 79 | 1991 | Dustin Cutsforth Owner | CIO | WordPressApple iCloud MailMicrosoft 365+26 | 185 patents Electrical machine component health monitoring and brush assembly hardware. | — |
| 32 | Ag Energy Agricultural solutions integrating environmental and economic impacts for a resilient future | $4M | 68 mo ago | 6 | 2010 | — | — | 1,199 patents Integrated energy generation, fluid dynamics, and uranium processing for oil‑gas extraction systems | — |
| 33 | Chomp Solutions for transforming food waste into renewable energy | $4M | 43 mo ago | 22 | 2013 | Jan Allen Founder | — | 12 patents Design and manufacturing of skateboard decks | — |
| 34 | Vor Systems AI-enabled transaction platform for energy asset transactions | $3M | 3 mo ago | — | 2025 | Victor Shao Co-Founder & CEO | — | — | — |
| 35 | Violett Manufacturer of air disinfection devices using ultraviolet light and filtration | $3M | 29 mo ago | 21 | 1999 | Branden Doyle Co-Founder & CEO | — | 7 patents Photonic air purification chambers and UV cyclonic fluid dosing for medical sterilization | — |
| 36 | Buildpulse SaaS-driven analytics solutions for buildings | $3M | 96 mo ago | 17 | 2013 | — | — | 8 patents Automated sensor discovery, classification, and airflow control for HVAC building automation systems. | — |
| 37 | Scope 5 ESG reporting and sustainability software, data integration, and consulting services | $2M | 94 mo ago | 14 | 2011 | — | WordPressMySQLPHP+28 | 44 patents Variable travel valve timing mechanisms for internal combustion engines | — |
| 38 | Microplanet Technology Voltage regulation products for utilities | $1M | 149 mo ago | — | 1995 | Brett Ironside CEO | — | 7 patents Electronic power conversion and control systems for regulated power electronics | — |
| 39 | Pacific Air Filtration Connected solution for air purification in homes and offices | $1M | 119 mo ago | — | 2014 | Igor Krichtafovitch Co-Founder & CTO | — | — | — |
| 40 | Homeostasis Developer of technology converting industrial carbon dioxide emissions into carbon materials | $1M | 15 mo ago | — | 2022 | Makoto Hamamoto Eyre Cofounder + CEO | — | — | — |
| 41 | Optimum Energy Online platform offering HVAC management solutions | $1M | 188 mo ago | 47 | 2006 | — | — | 75 patents Advanced HVAC energy optimization and predictive free‑cooling for building grid integration | — |
| 42 | ClearSign Provider of combustion efficiency enhancement technology solutions | $1M | 16 mo ago | 16 16 → 23 (+44%) | 2008 | — | WordPressMySQLPHP+25 | — | 1 launch |
| 43 | Ario Healthy lighting solutions mimicking natural light for better health and well-being | $1M | 116 mo ago | 3 | 2015 | — | — | — | — |
| 44 | BlueDot Photonics Manufacturer of nanotech-enabled solar panels and photonic devices | $1M | 61 mo ago | 2 | 2018 | Matthew Crane Co-Founder | — | — | — |
| 45 | MPM Technologies Provider of solutions for air quality monitoring | $1M | 158 mo ago | — | 1983 | Daniel Carraway CEO & President | — | 2 patents Patents concentrated in chemistry & materials | — |
| 46 | STARS Technology Corporation Technology solutions provider for generating hydrogen from solar energy | $826K | 46 mo ago | 3 | 2018 | Bob Wegeng Founder & President & CTO | — | — | — |
| 47 | Cielo WiGle Smart climate control solutions for mini-split and central HVAC systems | $750K | 109 mo ago | 67 | 2014 | — | WordPressMySQLPHP+23 | 20 patents Smart HVAC thermostat hardware, wiring adapters, and infrared communication protocols. | — |
| 48 | Voltair Developer of autonomous drone systems for power grid and wildfire monitoring | $500K | 5 mo ago | — | 2025 | Ronan Nopp Co-Founder & CEO | Framer SitesThree.jsReact+5 | — | — |
| 49 | Silurian AI Foundation models for simulating Earth's systems | $500K | 24 mo ago | — | 2024 | Nikhil Shankar Co-Founder | — | — | 1 partnership |
| 50 | FarmHQ Smart irrigation control system | $325K | 10 mo ago | 8 | 2020 | — | WordPressMySQLPHP+33 | — | — |
Top 12 Environment Tech companies in Washington
#1
Series C · Seattle, Washington · founded 2015 · 192 employees$81.5Mraised▾
Provider of monitoring and maintenance solutions for solar PV systems. It specializes in developing monitoring systems for domestic solar PV systems. It offers a day-to-day monitoring system that is used for risk management and project management of the installed photovoltaic system. Also, provides repair service and maintenance for solar energy system through signed contracts.
- Apr 2025Series C$87M
- Oct 2023Series B$25M
- Sep 2021Series B$36.4M
- Jun 2019Series A$15M
#2
Series B · Seattle, Washington · founded 2018 · 177 employees$15Mraised▾
Provider of convenient hard-to-recycle item pickup services. The company collects hard-to-recycle materials, such as plastic film, batteries, and light bulbs, directly from customers' homes. Using provided bags, customers store these items until bi-weekly pickup. Collected materials are then recycled or reused by vetted partners, diverting waste from landfills. The service aims to simplify the recycling process for consumers and promote sustainable waste management practices.
- Nov 2025Series B$15M
#3
Series B · Seattle, Washington · founded 2016 · 29 employees$32.2Mraised▾
Developer of membranes for the flow battery market. The company is engaged in the development of high-performance membranes to reduce the cost and improve the performance of flow batteries. Its first membrane is built for redox flow batteries, other potential use cases include pharmaceutical purification, fuel cells, and reverse osmosis.
- Jun 2025Series B$20M
- Feb 2025Series B$1M
- Nov 2024Series B$1.9M
- Aug 2023Series B$12.5M
#4
Seed · Seattle, Washington · founded 2025$3Mraised▾
AI-enabled transaction platform for energy asset transactions. It streamline transactions and financing for complex renewable energy assets, such as M&A, project finance, and tax equity deals. It processes massive document volumes to extract key insights like site risks, offtake details, and market dynamics, enabling faster due diligence for buyers, sellers, IPPs, lenders, and advisors.
- Mar 2026Seed$3M
#5
Series A · Kent, Washington · founded 2007 · 33 employees$12.2Mraised▾
PowerLight is developing wireless power delivery systems using laser beams to transmit electricity without wires, for applications. They have developed a two-part hardware system, consisting of a transmitter and a receiver. The mobile transmitter is capable of delivering tens to thousands of watts of DC power to electric drones (fixed wing or VTOL), over a distance of hundreds of feet to miles away. This ground-to-air recharging will both power the drone and charge the on-board battery while in flight. The transmitter may be based in an SUV, van or other mobile platform or on a static platform or building. The receiver is mounted on the drone and tied into its power system. Winner of 2009 NASA-sponsored Power Beaming competition.
#6
Series D · Seattle, Washington · founded 2016 · 146 employees$137.3Mraised▾
Online renewable energy PPA marketplace. It offers a renewable energy transaction platform connecting power buyers to PPAs from utility-scale wind, solar, and storage projects. The PPA product enables customers of various sizes to access the financial security of fixed-price renewables, economic benefits of at-scale projects, portfolio advantages of geographic & resource diversity, and sophisticated analysis of respected wholesale market experts.
- Jul 2024Series D$65M
- Nov 2023Series C$10M
- Aug 2021Series C$35M
- Jun 2019Series B$20.5M
#7
Series A · Seattle, Washington · founded 2023 · 6 employees$7.8Mraised▾
Green hydrogen production. It provides thermodynamic and dual production approach solutions for the production of hydrogen.
- Jul 2025Series A$7.5M
- Jul 2024Grant (prize money)$500K
- Sep 2023Seed$7.8M
#8
Series B · Seattle, Washington · founded 2015 · 21 employees$60.7Mraised▾
Manufacturer of modular smart lighting systems and related accessories. The company provides smart switches, dimmers, plugs, and simple switches, including motion sensor, nightlight, timer, and ceiling fan controllers. It also offers whole-home solutions, backplates, and faceplates. The company's lighting systems allow users to personalize lighting based on lifestyle.
- Jun 2024Series B$3.4M
- Oct 2022Series B$13.4M
- Mar 2021Series B$12.5M
- May 2020Series B$751.1K
#9
Series C · Kennewick, Washington · founded 2012 · 43 employees$28Mraised▾
Provider of carbon-fibre induced materials for the fashion industry. It designs and develops advanced materials using various technologies with multiple features, such as strength, stretch resistance, power transfer, and flexibility. The company caters to industries producing footwear, sports equipment, and travel products.
- Oct 2024Series C$3.3M
- Oct 2022Series B$2.4M
- May 2022Series B$7.8M
- Jan 2021Series A$2.9M
#10
Series B · Seattle, Washington · founded 2019 · 34 employees$32.8Mraised▾
Provider of SaaS-driven inspection management services for professionals and homeowners. Solutions are provided for inspectors, real estate professionals, and home buyers. Users can book home inspections by providing the address or the location of the house.
- Sep 2024Series B$15.5M
- Jul 2023Series A$5.8M
- Nov 2021Series A$11.4M
- Aug 2020Seed$150K
#11
Seed · Pullman, Washington · founded 2025$500Kraised▾
Developer of autonomous drone systems for power grid and wildfire monitoring. The company's drones offer aerial inspection of infrastructure, identifying maintenance concerns and public safety hazards. Services include post-storm inspections, virtual truck roll deployments, and active wildfire monitoring. High-frequency patrols support vegetation management and detailed asset inspections, providing up-to-date infrastructure maps.
- Jan 2026Seed$500K
#12
Public · Seattle, Washington · founded 2013 · 1800 employees$718.3Mraised▾
Provides software & service to home improvement industries. It provides an inspection support network, home inspection software, an online marketplace to book professional movers to pack, load, and haul their goods, roofing software, concierge service & more.
- Apr 2023Post IPO$333.3M
- Sep 2021Post IPO$385M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Environment Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Environmental Monitoring in Washington is moving
A read on the academic research around Environmental Monitoring in Washington — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 77 papers.
University of Washington leads Washington's environmental-monitoring research, focusing on air quality and health impacts, with an optimistic but cautiously contested tone amid rising recent output.
- University of Washington50
- George Washington University6
- Washington State University6
- Washington University in St. Louis5
- University of Washington Applied Physics Laboratory3
- Air pollution3
- Sampling (signal processing)3
- Air quality index2
- Environmental DNA2
- Gradient boosting2
- Air pollution1→3
- Air pollution4
- Sampling (signal processing)3
- Air quality index3
- Environmental resource management3
- Remote sensing2
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.