Top Washington Greentech Startups (28)

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...

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.

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,...

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

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%.

e-Stewards (www.e-Stewards.org) is an initiative to foster greater responsibility for electronic waste management. It was created by the Basel Action Network (www.ban.org). At its core, is the e-Stewards Standard for Responsible Recycling and Reuse of Electronic Equipment which is the world's highest standard of achievement for electronics recycler

Elevāt is an Industrial IoT company focused on connecting the industrial world. Elevāt specializes in connecting fleets of machines, and enabling the flow of data between operators, distributors, OEMs. Elevāt enables your business ecosystem to compete more effectively in the rapidly evolving global market. Elevāt continues to build out a high-value portfolio of turnkey Industrial IoT solutions; including Edge, Core,...

Scope 5 helps organizations improve environmental and economic impacts by tracking progress, revealing waste and driving action.

We are reversing climate change. Nori is a platform that makes it easy to fund carbon removal from the atmosphere. A platform that allows businesses to help repair our planet by removing any carbon emissions they can’t yet avoid creating. We've started with supporting regenerative agriculture projects that store carbon in the soil.

Ag Energy Solutions converts various agricultural waste into synthetic gas and high-value natural carbon material.

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

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...

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

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....

Creators of fenestra, a device which makes your windows smart and solves indoor air quality problems in a truly eco-friendly way. Our mission is to improve people’s health and help them save energy by automating an integral part of their home.

PotaVida's mission is to lower the cost of getting safe drinking water to people who need it. PotaVida lowers the cost of access to safe water in disasters and urban slums, and enables program evaluation by automating the collection and reporting of usage data.

Oscilla Power, Inc. (OPI) is developing a suite of proprietary, high-impact renewable energy and energy harvesting solutions based on low cost, readily available magnetic materials.

Pterofin is a Seattle-based clean technology company developing innovative energy generation devices based on biomimicry. Our current focus is on a customer who at the village level faces high costs and inefficiencies in pumping water from deep wells using existing electric pumps or outdated wind turbines.

HaloSource is a clean water technology company providing innovative solutions to the growing issue of water stress.

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.