Top Washington Greentech Startups (28)

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.

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.

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...

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

The asteroid mining company. Founded in 2009 by Eric Anderson and Peter H. Diamandis, M.D., Planetary Resources, Inc. is establishing a new paradigm for resource utilization that will bring the solar system within humanity’s economic sphere of influence by enabling low-cost robotic exploration and commercial development of asteroids.

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....

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.

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

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.

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.

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.

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

Grow Plastics has a technology to create expanded bioplastics products. Our inline expansion process creates a sandwich core structure in plastics - our products resemble airplane parts at the microscopic level. The sandwich core structure lets us make products competitive to solid plastics using half the materials.

EnerG2 engineers advanced nano-structured materials for energy storage breakthroughs. We believe that efficient, reliable and cost-effective clean energy storage will be an essential element of the new energy economy.

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...

Pure Blue is a nonprofit organization that collects, multiplies and shares resources to support the development and commercialization of water technology innovation.

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,...

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