Top Greentech Companies (1,283)

The Battery Network (formerly Call2Recycle) is a nonprofit organization that connects consumers, communities, and partners to safely collect, manage, and recycle batteries across the United States. It provides reverse logistics, compliance, and stewardship services for manufacturers and retailers, focusing on recovering critical minerals and building infrastructure for a circular energy future to ensure battery safety and environmental sustainability.

Fervo Energy is a next-generation geothermal power developer providing 24/7 carbon-free energy. The company leverages innovations in geoscience, including horizontal drilling and subsurface analytics, to make geothermal energy a dependable and affordable source of clean power. Its mission is to accelerate the global transition to sustainable energy and decarbonize the most challenging parts of the electricity sector through the development...

Casella Waste Systems, Inc. is a Vermont-headquartered, vertically integrated resource-management company serving homes, businesses, municipalities, retailers, industrial partners, and educational institutions. Its services include solid-waste collection, transfer, disposal, recycling, and organics management. Casella operates an extensive Northeastern infrastructure designed to provide reliable, sustainable waste solutions while recovering materials and creating environmental and economic value for customers and communities across the...

E3G (Third Generation Environmentalism) is an independent climate change think tank with a global outlook. Dedicated to achieving a safe climate for all, the organization translates climate politics, economics, and policies into action by identifying systemic barriers and constructing cross-sectoral coalitions. E3G guides governments, businesses, and the public to deliver transformational policy change and accelerate the global transition toward a...

Recycle Track Systems, Inc. (RTS) is pioneering a better way to manage waste and recycling. RTS combines digital solutions with high-touch service to make waste disposal easier, smarter, and more responsible. From on-demand removal through a mobile app to fully integrated waste management solutions, RTS helps companies easily track and optimize their pickups. Using data insight, RTS empowers companies with...

Climeworks is a leading company specializing in direct air capture (DAC) technology to remove CO₂ from the air. They create technology and markets for a global carbon removal industry, offering high-integrity carbon removal solutions and portfolios.

Redaptive redefines how energy and infrastructure projects are financed, delivered, and scaled, unlocking trapped value inside buildings and across portfolios through a new model called Infrastructure Monetization. Its programmatic approach replaces CapEx-heavy, reactive upgrades with scalable solutions that combine tailored financing, turnkey modernization, and measurable outcomes. Founded in 2015 and headquartered in Denver, Colorado, Redaptive empowers organizations to reduce risk,...

Hertha Metals is redefining steelmaking with a breakthrough single-step process that uses gas reductants to convert iron ore into steel or high-purity iron, offering lower production costs, reduced emissions, and improved product quality compared to traditional methods.

Global Green USA is a nonprofit environmental organization and the American affiliate of Green Cross International. It supports underserved communities through programs that educate and empower residents to address climate change, while advancing green cities, neighborhoods, schools, affordable housing, climate resilience, and environmental justice. The organization also partners with governments, policymakers, and corporations on sustainability, net-zero planning, reforestation, and reducing...

Carbon Clean is an established global leader in industrial carbon capture solutions helping essential, but hard-to-abate, industries decarbonise. Our innovative solutions significantly reduce the costs and environmental impacts of carbon capture compared to conventional technologies. Technology to achieve 'net zero'.

Progressive Recovery, Inc. (PRI) specializes in the design and manufacture of innovative clean-technology systems, including closed-loop solvent recycling, biowaste sterilization, and industrial filtration. Serving sectors such as pharmaceuticals, printing, and oil and gas, the company focuses on safeguarding the environment and maximizing operational efficiency through its expertise in process management and custom fabrication.

Transaera, Inc. is a Massachusetts-based climate-tech startup and MIT spin-out that develops ultra-efficient, sustainable cooling systems for residential, commercial, and industrial applications. By utilizing novel desiccant materials, the company aims to revolutionize air conditioning, significantly reducing energy consumption and greenhouse gas emissions while enhancing indoor air quality and occupant comfort on a global scale.

Bluecore Energy is developing small modular, water-cooled nuclear reactors for floating energy barges. Its maritime nuclear systems are intended to provide reliable, zero-emission electricity directly to ports, data centers, critical infrastructure, utilities, offshore facilities, and energy-constrained communities. Headquartered at the Port of Long Beach, the company is also exploring a longer-term pathway toward nuclear propulsion for cargo ships.

Heart Aerospace is an aerospace manufacturer specializing in the development of hybrid-electric regional aircraft. Founded in 2018, the company's mission is to lower the cost of commercial aviation and create the fastest, most affordable, and sustainable transportation for regional travel globally. Their focus is on electrifying regional air travel through products like the ES-30 aircraft.

Brightworks is a sustainability and ESG consulting firm that helps organizations design and implement practical sustainability programs. Founded in Portland, Oregon, the company provides technical and advisory services across clients in more than 25 industries, supporting organizations throughout their sustainability journeys. Its work spans comprehensive ESG services, helping businesses translate environmental and social goals into actionable programs and long-term operating...

Zero Carbon Systems is a clean energy and direct air capture company developing scalable technologies to remove carbon dioxide from the atmosphere. Its mission is to accelerate the transition to a zero-carbon future by reducing atmospheric CO2 at scale. The company designs, builds, validates, and upgrades direct air capture machinery, pilot plants, and demonstration facilities for carbon removal.

Watershed is the enterprise climate platform. Leading companies like Walmart, Stripe, Spotify, Klarna, and Twitter use Watershed's software to measure, reduce, and report their carbon emissions. With its state-of-the-art carbon data engine, in-house climate experts, and marketplace of high-quality decarbonization initiatives, Watershed provides audit-grade emissions data to power business value creation, regulatory compliance, and global climate impact. Watershed’s advisors and...

Over millions of years, silicate rock weathering has regulated Earth’s climate. By crushing silicate rocks and spreading them on agricultural soils - an approach called Enhanced Rock Weathering (ERW) - we can accelerate Earth’s natural process into a solution capable of addressing the urgency of climate change. Existing agricultural and silicate rock sites - namely 5,000+ global silicate rock quarries surrounded...

Footprint is a materials science company that is focused on reducing or eliminating single-use plastics through the development and manufacturing of revolutionary technologies, initially focusing on bio-based reinforced polymers and the design, development and implementation of next generation manufacturing technologies for fiber based packaging solutions. Our primary focus is on delivering plastic replacement, reduction and elimination solutions that compete with...

Radial Power provides distributed energy and sustainability solutions to commercial and industrial real estate asset owners, offering onsite energy solutions such as solar energy systems, battery storage, and electric vehicle charging infrastructure.