Top Washington Greentech Startups (36)

We're on a mission - starting with 100% reusable rockets.

Evergreen Action is a U.S.-based nonprofit founded in 2020 that leads a national mobilization to defeat the climate crisis. The organization builds ambitious, actionable state and federal climate policy roadmaps to accelerate a just, inclusive clean-energy transition that creates jobs and strengthens communities. Evergreen focuses on policy design, advocacy, and organizing to drive large-scale public investments in clean energy and...

Earth is the national leader in soil transformation: it’s a gentle, natural process that transforms a body into soil that families can scatter, plant, or share. Our mission is to give families the easiest way to make arrangements, and to heal our planet in the process.

Technosylva is the leading provider of wildfire and extreme weather risk mitigation solutions for electric utilities and fire agencies. Since 1997, we've operationalized wildfire science to support critical decisions that enhance daily operations and long-term planning. Our mission is to reduce the impact of wildfires and extreme weather through real-time insights and predictive modeling. Our solutions combine the best source data...

Herrera Environmental Consultants is an employee-owned science, engineering, planning, and design consulting firm. It develops holistic, sustainable, and nature-based infrastructure solutions that address environmental and infrastructure challenges. The company serves cities, counties, state and federal agencies, Tribes, nonprofits, and private clients across the western United States and western Canada, combining interdisciplinary expertise to create scientifically rigorous, cost-effective outcomes that benefit...

Since 2005, Optimum Energy’s patented software and engineering expertise has helped customers reduce energy use in heating and cooling systems, the largest consumer of energy in buildings, by up to 50%.

LevelTen Energy provides opportunities for smaller companies to invest in cleaner energy by offering renewable energy in amounts and prices proportionate to each company's needs.

Botanical Designs is an innovative commercial landscaping company that designs, installs, and maintains interior and exterior commercial landscaping, living green walls, preserved moss art, indoor plant programs, artificial greenery, and seasonal holiday décor.

USAgain is a for-profit textile recycling company that collects reusable clothes, shoes, and household textiles to divert them from landfills. Through partnerships with schools, businesses, and municipalities, they operate a wide network of collection bins and 'TreeMachines' to extend the life cycle of clothing. Their mission is to be a global leader in secondhand clothing, creating sustainable value for people...

Port Townsend Paper Company produces sustainable Kraft pulp, Kraft Paper, containerboard, and specialty products by blending virgin and recycled fibers.

Building novel solutions for clean air, water and energy with AI. Let's keep Earth our home forever. From sustainable fuels, to carbon capture, to harmful chemical removal from the environment, Orbital Materials develops and commercialises technologies that keep earth our home forever. At the core of our company is a foundation model for atoms, built by world experts in generative...

Clean Power Research® is advancing the energy transformation through cloud software that informs, streamlines and values energy-related decisions and processes for utilities, energy professionals and consumers. We’re focused on expanding our market reach and impact with new software technologies that help solve the energy industry’s problems. Recognized by BuiltIn Seattle as "Top 100 Best Places to Work in Seattle” and...

Reklaim, Inc. is a breakthrough technology company dedicated to transforming the way we manage scrap tires. The company is poised to launch a new sector of the Green Economy—one that promotes essential and substantive environmental and public health benefits and also delivers attractive economic returns to investors.

Drift is the only energy retailer that powers businesses with 100% green energy, 100% of the time. We seek to electrify the world with 100% green energy. All-day. Everyday. So we built Drift 100 to deliver an uninterrupted supply of green energy with our unique mix of locally-sourced solar, wind, and run-of-river hydro. Our technology matches every unit of green...

Membrion is a Seattle-based start-up company commercializing a new membrane technology developed at the University of Washington. High performance membranes are critical and expensive components of many technologies including water purification technologies and batteries.

Mast Reforestation is a climate tech company with a mission to make reforestation scalable. As bigger, hotter, and more frequent fires increasingly destroy forested land each year, Mast facilitates faster, more resilient forest regeneration. Mast provides vertically integrated reforestation services to get forest restoration projects up and running in weeks, not years. Services include seed collection, seedling cultivation, site preparation,...

Principle Power is a technology developer focused on the deep-water (greater than 40m) offshore wind energy market.

We believe that applying science is the only way to solve the climate crisis. Scientific expertise is critical to both effective and efficient carbon management – yet it can be hard to access outside of the academic and public sectors. New research and technologies emerge every day in our nascent industry and it can be difficult to know what actions to...

StormSensor tracks the effects of climate change to reduce the vulnerability of our communities’ sewage infrastructure. Wetter weather and increased frequency of large storms means cities are more vulnerable to flooding, sewage overflows, and water pollution. With StormSensor, it’s finally possible to adaptively plan for and manage urban flooding, greatly mitigating hazardous risks and reducing costly cleanups and property damage....

Harvesting USB power from nature for the world! Our Personal Power Products are recharged by flowing water, wind, bikes, muscle power, donkey carts, sun, fire, or pretty much any source of energy to generate power for battery charging, LED lights, sensors, cameras and wireless transmitters. Over 1 billion people living off grid now need USB power f