Greentown Labs

Andros Innovations manufactures reactors that reduce the cost and energy consumption of ammonia manufacturing.

BlueShift is a climate technology company that specializes in electrochemical processes. It develops systems to capture carbon dioxide directly from the ocean and convert industrial waste into valuable minerals, such as nickel and carbonates. This process not only provides sustainable sources for these materials but also significantly reduces atmospheric carbon, contributing to climate change mitigation.

AtmoSpark provides water to those with limited access. They want to make sure that access to clean, drinking water is never a concern to anyone and they want to lead the way for social impact driven tech ventures.

Axis Sky Renewables is a company dedicated to harnessing wind power for a sustainable energy future. It specializes in manufacturing vertical-axis wind turbines, which are designed with features like keel-stabilized rotation, tension leg platform mounting, and compact spacing to reduce installation costs and increase offshore power density. The company's turbines are intended to provide a sustainable and efficient source of energy.

Active Surfaces, a Massachusetts-based company, specializes in commercializing ultra-thin-film solar technology developed at MIT. Its core business involves creating flexible, lightweight solar panels that can be seamlessly integrated into everyday materials and surfaces, revolutionizing the conventional energy sector. The company's innovative manufacturing approach significantly reduces production costs, making solar power more accessible and affordable. This technology presents a transformational opportunity for semiconductor and electronics manufacturing, driving down costs for both module production and installation. By enabling virtually any surface to generate power, Active Surfaces aims to accelerate the transition to a cleaner, more sustainable future.

Carbon Upcycling is a carbon technology company focused on decarbonizing hard-to-abate industries through its patented technology. This innovation allows for the permanent storage of carbon dioxide in industrial byproducts and minerals, effectively transforming them into high-performance alternative materials for cement and concrete. By doing so, Carbon Upcycling aims to significantly reduce the carbon footprint of industrial processes while diverting materials from landfills, thereby supporting a circular economy. The company has garnered international recognition for its advancements, being awarded the Carbon XPrize’s X-Factor, named NRMCA’s 2023 Innovative Company, and included in Cleantech Group’s Global Cleantech 100 and Foresight 50’s Canada’s Most Investable Cleantech Ventures.

Hempitecture, based in Idaho, USA, specializes in developing sustainable construction materials and systems using hemp. The company manufactures a variety of eco-friendly building products, aiming to promote energy-efficient and clean construction methods. Additionally, Hempitecture produces natural fiber materials for other industries like cold chain packaging, further expanding the use of its sustainable offerings.

Puro Renewables is a company focused on upcycling biorenewable, carbon-negative biowaste to significantly mitigate the environmental impact of plastics. It develops sustainable bioplastic technology aimed at reducing carbon dioxide emissions and addressing long-term plastic pollution. Puro Renewables provides a range of biobased and cost-efficient solutions for plastic manufacturers, promoting initiatives for reduction, reuse, and recycling. By enabling customers to utilize innovative biodegradable materials, the company contributes to efforts for a cleaner planet and fosters a more sustainable approach to plastic production.

ZS2 Technologies specializes in the creation and production of advanced building technologies, particularly prefabricated structural panels and cementitious building materials. The company is dedicated to enhancing building performance through its innovative construction solutions, which include fire-rated, non-toxic, and low-carbon materials. By focusing on research and the acceleration of construction technology adoption, ZS2 Technologies aims to help its customers reduce operating costs and shorten construction timelines.

Endeavor Composites is a manufacturer specializing in advanced composite materials for the automotive, aerospace, and maritime sectors. The company focuses on producing defect-free, fully isotropic carbon fiber non-woven reinforcing fiber mats, utilizing long fibers to achieve low-cost and high-speed production. Its innovative processes provide a zero-waste solution, enabling efficient production of components such as battery casings, access panels, and under-the-hood parts. Through its emphasis on sustainability and advanced manufacturing techniques, Endeavor Composites meets the growing demand for high-performance materials in various industries.

Lobster Robotics specializes in developing lightweight, low-cost robots for visual surveying in offshore wind farms. Their technology enables quick, affordable site assessments, reducing surveying costs and supporting the development of offshore renewables.

HyperKelp specializes in advanced ocean data technology, offering innovative kelp-smart buoy defense and intelligence products. Their buoys are engineered to accommodate various payloads at sea while providing reliable data delivery to any location on the planet's surface. The technology captures real-time sensor data from devices such as cameras and microphones, enabling early detection of hypersonic threats through surface-level data access. HyperKelp's system is designed to function effectively under challenging conditions, ensuring that weather and weak target signals do not impede its performance. By providing a cost-effective alternative to satellite-based systems, HyperKelp enhances maritime security and situational awareness through its multi-domain analytics and alert capabilities.

FutureOn is a company specializing in visual engineering solutions for the oil and gas subsea sector, having evolved from Xvision, a division of the EXP group with over 15 years of industry experience. The company has developed a collaborative platform that focuses on field design and application programming interfaces, allowing for seamless integration of backend systems and offshore engineering software. This platform enhances field planning, design, and activity scheduling, thereby helping energy companies improve their workflow processes and achieve better business outcomes. FutureOn's innovative approach aims to optimize operations within the subsea domain, making it a valuable partner for clients in the energy industry.

Developer of underwater visual inspection robots designed to build robots that produce visual dimensional maps of underwater surfaces. The company provides high-quality underwater images to all industries that are exposed to the marine environment from the shipping industry, offshore oil and gas, and windmill farmers as well as any shore-based structures, enabling businesses and clients to maintain their underwater maintenance and assets.

SeaDeep is a developer of an advanced environmental sensing platform that utilizes artificial intelligence and machine learning to improve imaging, hyper-spectral data analysis, and 3D visualization of underwater environments. The company focuses on providing real-time, autonomous assessments of subsea conditions with unprecedented fidelity. By leveraging innovative technologies, SeaDeep enables clients to monitor underwater assets effectively, supporting sustainable operations and research in ocean environments. Its platform is designed to deliver critical data that promotes cost-effective and environmentally responsible development in subsea operations.

Dioxycle is a company focused on developing innovative electrolyzer solutions aimed at addressing carbon dioxide emissions. It specializes in carbon dioxide conversion technology that captures and transforms carbon dioxide into valuable chemical products. By employing electricity-driven pathways, Dioxycle treats carbon dioxide as a resource, facilitating the generation of everyday products while reducing reliance on fossil feedstocks such as carbon monoxide, methane, and hydrocarbons. This approach not only enables clients to manage industrial carbon dioxide emissions effectively but also contributes to a more sustainable chemical production process.

Gaia AI is an MIT spinout focused on revolutionizing forestry management through advanced perception artificial intelligence. By leveraging technology similar to that used in autonomous vehicles, Gaia AI processes LiDAR, camera, and satellite data to enhance the understanding of forest ecosystems. This innovative approach allows for more accurate assessments of carbon stock and timber content, enabling landowners, project developers, and investors to make informed decisions regarding forestry management. Additionally, Gaia AI aims to streamline the evaluation of various forest values, including carbon projects, ecosystem services that support biodiversity, and wildfire risk, ultimately promoting trees as a viable and economically beneficial option for carbon sequestration in the fight against climate change.

Innovator Energy specializes in advanced heat transfer, cooling, and heating technologies while also focusing on carbon conversion and mitigation solutions. The company has developed innovative technology that effectively separates carbon dioxide from emissions produced by various industries, including power generation, cement production, biogas purification, metal refining, and wastewater treatment. This technology can be integrated into existing systems to convert CO2 emissions into clean natural gas, thereby allowing users to transition from fossil fuels to high-performance, zero-net carbon fuels derived from carbon dioxide. Through its pioneering approaches, Innovator Energy aims to address environmental challenges and promote sustainable energy practices.

ALLY Energy is a developer of an artificial intelligence-driven platform that connects energy and climate companies with talent seeking purpose-driven careers. The company offers a marketplace designed to facilitate connections between diverse candidates and job opportunities in the energy and climate sectors. By focusing on inclusivity, ALLY Energy aims to bridge the gap between employers and underrepresented talent pools, including individuals from various genders, ethnicities, generations, and backgrounds, such as veterans and neurodiverse individuals. This approach supports an equitable energy transition by enabling firms to build a more diverse and capable workforce for the future.

Black Mountain Resources is a global mining company specialising in the development and operation of metal mines. It oversees projects from inception through to completion, aiming to meet growing demand for metals by combining high-quality mineral deposits with experienced personnel and robust financial backing.

Varea Energy focuses on advancing geological hydrogen as a sustainable energy source by identifying and quantifying hydrogen reserves through existing seismic data. The company operates at the intersection of traditional gas exploration and advanced data analytics, aiming to support the decarbonization of the transportation sector. Varea Energy provides a comprehensive approach to facility management, incorporating data analytics and engineering services. Its offerings include energy assessments and feasibility studies tailored to enhance sustainability and reduce operational costs for commercial and industrial facilities. In a rapidly expanding green energy market, Varea Energy is committed to increasing the utilization of hydrogen fuels.

Triton GHG Environmental Services creates mobile skid-mounted units that eliminate the need for diesel, monitor, quantify, and significantly reduce greenhouse gas emissions at oil and gas drilling sites, LNG facilities, compression stations, and processing plants.

Revterra Corporation is a Texas-based company focused on the development of flywheel energy storage systems tailored for grid and utility-scale applications, including renewable energy sources such as wind and solar power. Established in 2017, Revterra employs patented technology featuring passive magnetic bearings that facilitate efficient energy storage by operating at high speeds with low power consumption. The company positions its kinetic battery platform as a solution to power infrastructure challenges, thereby promoting renewable energy adoption and facilitating electrification demands. Additionally, its technology supports charge point operators in providing ultra-fast electric vehicle charging, streamlining installation processes, and minimizing the need for extensive infrastructure upgrades.

Ennuity Holdings provides residential energy consumers with a subscription for electricity from a real solar farm, allowing customers who don't have a suitable roof for their own solar panels to save on their energy bills while leaving a lasting environmental legacy for the planet.

Skylark Wireless LLC specializes in designing and manufacturing advanced wireless networking hardware and software-defined radio (SDR) systems, primarily targeting the rural broadband market. Founded in 2012 and based in Houston, Texas, the company focuses on bridging the digital divide for the over 40 million Americans in rural areas who lack access to reliable broadband Internet. Skylark has pioneered Massive MIMO technology, which allows for multiple narrow beams per sector, significantly enhancing coverage and capacity while reducing interference. Its product offerings include various MIMO radio solutions and custom printed circuit board (PCB) design and fabrication services. The company has received multiple grants and contracts, including significant awards from the FCC and the U.S. military, and has established itself as a key player in the development of next-generation wireless systems. By leveraging its patented technologies, Skylark aims to provide affordable broadband solutions to underserved communities, transforming the economics of wireless connectivity.

ClearTrace is a software company established in 2017 and headquartered in Austin, Texas, that specializes in automated energy and carbon accounting for various stakeholders, including investors, enterprises, and real estate owners. The company's technology creates accurate and verifiable emissions data, enabling clients to substantiate their claims related to carbon reductions, sustainability, and renewable energy. By providing a robust digital infrastructure, ClearTrace helps prevent greenwashing and serves as a reliable source of truth for corporate decarbonization efforts. Its solutions aim to accelerate and scale renewable energy production while ensuring that organizations can meet their sustainability goals effectively.

Revolution Turbine Technologies (RTT) specializes in generating reliable, zero-emission electricity from excess pressure found in gas production, transmission, and distribution systems. The company addresses a significant global market opportunity, focusing on reducing carbon emissions substantially. RTT’s innovative micro-expansion turbine system offers a sustainable alternative to traditional power sources, effectively replacing carbon dioxide-emitting combustion generators and methane-emitting valves and controllers. By enhancing the reliability, efficiency, and resilience of natural gas delivery systems, RTT provides scalable and modular power solutions that are equipped with advanced connectivity. This technology aims to transform the operational landscape of the oil and gas industry, promoting a cleaner energy future.

Katz Water Technologies purifies water using streamlined simplified equipment that can utilize waste energy. Its technology is able to purify produced water inside streamlined equipment that combines a gas burner with a modified heat exchanger. The company is based in Houston, Texas.

Veloce Energy specializes in energy storage and infrastructure solutions designed to facilitate the electrification of transportation. The company offers a modular and scalable battery energy storage system along with a flexible above-ground installation system, which streamlines the design, construction, and operation of electric vehicle charging stations. Veloce Energy's innovative ARGOS software platform enhances these systems by providing a user-friendly interface for secure transactions and operational intelligence. This technology addresses challenges related to connecting large loads at the grid edge, significantly reducing costs and development time for EV charging stations by over 50%. Additionally, Veloce Energy enables distributed storage deployment and introduces new financing models such as charging as a service, thus enhancing the overall efficiency of electric vehicle infrastructure.

Quantum New Energy is a technology company focused on facilitating the transition to sustainable energy. It develops a platform that optimizes energy efficiency, reduces costs, and lowers carbon emissions by transforming unused data into actionable insights. The platform, designed with secure remote data access and integration of human factors, also streamlines Environmental, Social, and Governance (ESG) reporting, making carbon reduction more relatable and cost-effective for clients.

Eclipse Solar Projects is a development firm that finances, operates, and owns utility-scale solar projects in North America using cutting-edge technology and potential battery storage operations.

Applied Bioplastics is a company focused on providing sustainable alternatives to petroleum-based plastics. Its mission is to eliminate dependence on virgin plastics by offering affordable, high-grade recycled options that incorporate sustainably sourced plant materials from developing nations. This approach not only reduces costs but also addresses the economic barriers that hinder companies from adopting recycled plastics. The company's bioplastic products are designed to lower carbon dioxide emissions and minimize habitat destruction, combining plant fibers with standard, recycled, or biobased polymers. These materials can be injection molded or extruded, making them suitable for a wide range of applications across various industries, including household goods, automotive, appliances, electronics, and outdoor equipment, all while maintaining quality and performance.

Terrapin Geothermics is a developer of emission-free energy projects focused on harnessing heat to create value for various industries. The company specializes in generating clean, baseload electricity and heat from industrial waste heat and deep geothermal resources. By mapping available waste heat and matching it with advanced technologies, Terrapin helps industries optimize their processes while contributing to sustainability goals. The company's approach includes building robust financial models to support investment decisions, positioning its clients to thrive in a net-zero world amid fluctuating commodity prices and increasing carbon regulations. Through the use of renewable energy from waste heat recovery and geothermal applications, Terrapin Geothermics enables its partners to enhance their environmental, social, and governance (ESG) profiles.

Footprint is an educational platform. They aim to become the new international standard in climate education and mitigation tools. They created an application to empower individuals, schools, and corporations to track and reduce their carbon footprints. They also provide lesson plans, slide decks, lecture notes, videos, and the virtual interface needed for students. Footprint offers your classroom incentive packages to enhance learning and participation rates.

Syzygy Plasmonics, Inc. is a Houston-based company that specializes in the design, development, and manufacturing of photocatalytic reactor systems for industrial chemical reactions. Founded in 2017, the company focuses on creating reactors that facilitate the generation of fuel cell quality hydrogen from ammonia, specifically for small-to-medium-scale applications. These advanced reactors operate at significantly lower temperatures than traditional chemical reactors, allowing for reduced maintenance costs and the ability to quickly start or stop production. By utilizing light as an energy source, Syzygy Plasmonics enables the integration of renewable electricity into chemical manufacturing, contributing to the decarbonization of various industries and supporting the on-site production of ultra-low-cost hydrogen gas for fuel cell vehicles.

Applied Gaia specializes in the production of biochar, a clean and odorless material derived from waste biomass. This process, known as pyrolysis, transforms waste that would otherwise be burned or landfilled into a valuable product. Biochar, when added to soil, can reduce the need for chemical fertilizers and enhance filtration methods, thereby promoting sustainable agriculture.

Topl is a company that focuses on developing blockchain infrastructure aimed at monetizing ethical and sustainable practices. Founded in 2017 and headquartered in both Maastricht, Netherlands, and Houston, Texas, Topl offers blockchain-as-a-service (BaaS) specifically designed for supply chain management and certification. Its primary offering, the Topl Blockchain, serves as a decentralized protocol that allows businesses and communities to verify and monetize their positive impact across various industries and borders. Additionally, Topl provides a suite of hosted services and tools that simplify user interaction with its blockchain, facilitating the transformation of social and environmental impact into tangible assets.

Excipio Energy is a company that specializes in offshore renewable energy, offering a unique solution that combines multiple renewable energy sources - wind, wave, currents, Ocean Thermal Energy Conversion (OTEC), and power-to-fuel - on a single floating platform. Their services aim to make energy more profitable, safe, and reliable, while also reducing development costs by leveraging existing offshore infrastructure. They provide comprehensive consulting services, including technology evaluation, resource assessments, cost estimation, and regulatory guidance, to help energy producers navigate the offshore renewable energy landscape.

Cemvita is a synthetic biology company focused on developing innovative solutions that promote sustainability and enhance the energy transition. Utilizing its CO2 Utilization platform, the company mimics natural processes such as photosynthesis to produce a range of products, including nutrients for space exploration and industrial chemicals for various applications. Cemvita aims to assist industries like oil and gas, chemicals, and mining in reducing their carbon emissions by providing environmentally friendly methods for resource extraction, including lithium mining. Through its nature-inspired approach, Cemvita seeks to advance sustainable practices in multiple sectors while addressing critical challenges related to energy and environmental impact.

Seasats specializes in the development and operation of small autonomous ocean vehicles that cater to defense, scientific, and commercial sectors. The company focuses on providing remote monitoring and data collection capabilities at significantly reduced costs, logistical demands, and risks compared to conventional methods. Its vehicles feature a low-cost, modular design and are capable of extended multi-month missions. Equipped with various sensors, cameras, hydrophones, and other payloads, Seasats enables its customers to undertake high-risk and high-cost operations with greater efficiency and safety.

e^2: equitable energy is a multi-brand cause-marketing platform that onramps consumers to drive carbon neutral, accelerates the deployment of sustainable energy solutions, and encourages the adoption of zero-emission vehicles in a way that is persuading, practical, practical, and reliable.

ClearValue Technologies is a water chemistry, biology, and thermodynamics-based technology company bringing a clear value to every product.

SolBid is a clean energy technology platform specializing in the commercial and industrial sectors. The company focuses on simplifying the process of designing, procuring, and installing commercial solar plants. By providing a streamlined resolution for these processes, SolBid enables clients to either offer solar as a service or implement installations on their commercial properties. This approach helps clients achieve a high return on investment while promoting the adoption of renewable energy solutions.

HYGEN is an innovative company that specializes in developing home fueling appliances designed to enhance the use of natural gas vehicles (NGVs). By utilizing its patented liquid piston gas compression technology, the company offers a supercharger that allows users to refuel gas-powered vehicles at home or in the office within just three minutes. This technology addresses challenges in the NGV market by transforming the existing gas distribution grid into a decentralized fueling infrastructure. HYGEN's appliances not only eliminate maintenance and operational inefficiencies but also extend the service life of gas compression systems and significantly reduce the total cost of ownership. Through its solutions, HYGEN enables gas utilities to enter the transportation fuel market by providing clean and affordable fuel options directly to consumers, thus modernizing the perception of NGVs and promoting a more appealing alternative to conventional fueling methods.

Trellis Air is a manufacturer specializing in energy-efficient HVAC technology. The company produces dehumidifiers that utilize a high-performance, low-cost membrane and a novel vacuum pump system, offering substantial energy savings compared to traditional methods. This innovation enables building operators and consumers to manage humidity more sustainably and reduce air conditioning costs.

Heliotrope Photonics is a innovative coating technology enhances solar-panel performance by transforming wasted sunlight.

Studio 3E8 is a technology company that specializes in metal 3D printing. It offers a platform that significantly enhances accessibility to this technology and reduces costs. The company's innovative solution integrates hardware, software, and materials to streamline the manufacturing process, enabling engineers to efficiently create metal parts for both rapid prototyping and end-use production. This transformation in manufacturing aims to reduce complexity and make metal 3D printing more accessible and affordable.

NeuroBionics is a biotechnology firm focused on advancing precision bioelectronic medicine through the development of innovative implanted devices. The company specializes in creating a new class of electronic medicine designed to revolutionize neuromodulation techniques. By developing flexible neuroprostheses that can bi-directionally interface with soft organs, NeuroBionics aims to modulate organ function, treat various diseases, and enhance patient quality of life. Through its cutting-edge technology, the firm seeks to empower healthcare providers to address the specific needs of their patients effectively.

Dottir Labs specializes in developing spectroscopy sensor technology tailored for aqueous environments. This technology detects and measures nutrients, metabolic markers, and both organic and non-organic waste products in real-time, empowering clients to achieve sustainability through data-driven insights.

NET Offset is a company focused on commodity trading and focus on financial energy markets.

Alkemie is a materials company with proprietary technology that produces tailored graphene.

Inductive Robotics specializes in providing a scalable, cost-effective electric vehicle (EV) charging solution for parking lots. Their robotic charging system optimizes existing infrastructure, eliminating the need for expensive upgrades, and offers a flexible, subscription-based service for parking lot operators.

Loop CO2 is a technology company focused on carbon dioxide utilization, dedicated to creating a sustainable future. The company specializes in innovative solutions that convert CO2 into essential products, including cosmetic oil, adhesives, and thermoplastic elastomers. By transforming CO2 into valuable materials, Loop CO2 enables its customers to reduce their environmental impact and adopt eco-friendly alternatives in their offerings.

Sweetch Energy is a company focused on harnessing blue osmotic energy by utilizing advanced nanotechnologies and materials. It has developed a power harvesting technology that generates electricity from the salinity difference between saltwater and freshwater. By employing a filtration system, Sweetch Energy aims to provide consumers with access to affordable electricity derived from saline gradients, effectively combining academic innovations with practical applications in the energy sector.