Top Greentech Companies (1,517)

Zap Energy is an integrated nuclear energy company focused on commercializing both fission and fusion power. The company is developing compact-scale, liquid-metal-cooled modular energy systems and advanced fusion power systems that operate without magnets. Its mission is to provide a sustainable, clean, and carbon-free energy source to address the global energy crisis across industrial, commercial, and residential markets.

Avantium N.V. is a chemical technology company that develops and commercializes next-generation bio-based plastics and chemicals. Their mission is to lead the transition from fossil-based to sustainable materials, driving the de-fossilization of the chemical industry and the circular economy.

Sol-Ark is a veteran-owned solar and energy storage technology company that designs and manufactures hybrid inverters and energy storage solutions, aiming to provide reliable, innovative, and affordable power resilience for homes and businesses.

Rumzer provides SaaS solutions and product compliance software to help manufacturers navigate global environmental regulations and practice effective product stewardship.

The Savanna Institute is a 501(c)(3) nonprofit that catalyzes the development and adoption of resilient, scalable agroforestry, working with farmers, businesses, and scientists to integrate trees with agricultural crops and livestock in the Midwest US, fostering ecological resilience, climate stability, economic prosperity, and vibrant communities.

HR Wallingford is an engineering and research organization focused on designing smart, resilient solutions for the water environment to promote sustainable living and working.

Planteria Group is a design-led interior landscaping company that designs, installs and maintains plants, living walls and corporate floristry for workplaces. Established in 1977, it provides nationwide plant maintenance (90k+ displays), biophilic design consultancy and workplace greenery services focused on wellbeing, sustainability and long-term client partnerships, and has recently expanded into the United States.

HIES is a leading consumer protection organization and a Chartered Trading Standards Institute (CTSI) approved Consumer Code. It focuses on the installation of renewable energy and home energy efficiency products, ensuring homeowners are respected, protected, and educated throughout their home improvement journey. The organization provides a vital framework for consumer protection and peace of mind for those embarking on home...

Vattenfall is a leading European energy company and a Swedish multinational power company owned by the Swedish state. As one of Europe's largest producers and retailers of electricity and heat, it generates, distributes, and sells energy across several markets. Vattenfall is committed to driving the transition toward a fossil-free energy system and enabling the fossil freedom that drives society forward.

Enva is a leading provider of recycling and resource recovery solutions operating across the United Kingdom and Ireland. The company specializes in managing hazardous and non-hazardous waste, transforming complex materials into valuable, sustainable products for reuse in manufacturing and energy conversion. With a commitment to sustainability and the circular economy, Enva provides a comprehensive portfolio of industrial, water, and wastewater...

Prinsco, Inc. is a fourth-generation, family-owned manufacturer of water-management solutions serving agriculture, stormwater, residential and onsite septic markets. Headquartered in Willmar, MN, Prinsco produces plastic drainage pipe, chambers and fittings—often from recycled materials—through a national network of plants and yards. The company emphasizes relationship-driven service and a mission to “care, contribute and solve.”

Sunlight reflection may be the only available option, alongside dramatic emissions reductions, adaptation, and rapid scaling of carbon removal, to rapidly limit many climate impacts over the coming decades. But we don’t know nearly enough about it to make a scientifically-informed decision about potential deployment – and we’re not on a trajectory for rapid, legitimate decision making. Reflective is a philanthropically-funded...

CharterUP is the world’s largest bus‑booking platform—an AI‑powered marketplace and operating system for group transit. We let organizations book vehicles in minutes with instant pricing, real‑time availability, and transparent operator selection across a vetted network of 500+ operators and 6,000+ vehicles in all 50 states and Canada. Customers manage trips end‑to‑end with Rider and Driver apps for live tracking, seat...

Baker Commodities, Inc. is a family-owned rendering and grease-recycling company (est. 1937) that collects restaurant grease and animal by-products, then converts them into commercial commodities — feed ingredients, tallow and feedstock for biodiesel. The company operates a nationwide network of facilities offering rendering, grease collection, trap pumping and environmental services with a stated focus on sustainability and waste-to-value solutions.

GoodLeap is a sustainable home solutions marketplace. We provide simple, fast, and frictionless point-of-sale technology for countless mission-driven professionals serving millions of people who want to upgrade their homes and save money. Our platform offers flexible ways for consumers to pay for a wide range of sustainable products, including solar panels, battery storage, smart home devices, modern HVAC systems, energy efficient...

Safi is the new era of TrueCircle. Since we launched in 2021 under the name TrueCircle, we have been on a mission to tackle recycling inefficiency by improving the way we buy and sell recyclables. Safi gives customers access to the best prices and instant expansion into global markets. Through Safi AI, sellers can prove their material quality and drive...

Pratt Industries is America's fifth largest corrugated packaging company and the world's largest, privately-held producer of 100% recycled paper.

Forerunner is a Series B company building the AI-powered intelligence layer for government agencies and regulated industries — helping large cities and counties finally make sense of the data they already have. Here's the problem we're solving: cities spend millions on permit systems, GIS, and asset management tools, but still can't answer their most important operational questions. Data sits fragmented across...

The Environmental Law & Policy Center is the Midwest's leading environmental legal advocacy organization that combines public interest litigation with policy advocacy to protect natural resources, advance climate solutions, and promote environmental justice.

Bright Power provides practical energy management and renewable energy solutions that save building owners energy, money and time. From utility bill analytics to the nuts and bolts of making physical improvements, we help building owners reduce waste, improve cash flow, achieve energy law compliance and make building occupants more comfortable.