Greentown Labs

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

BlueShift operates as an electrochemical climate tech innovator. BlueShift unlocks underutilized resources with advanced electrochemical technology.

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' purpose is to harness the power of the wind and build a sustainable energy future.

Active Surfaces is commercializing MIT-developed ultra-thin-film solar technology. The company seeks to revolutionize the conventional energy sector by making solar power widespread and seamlessly integrating it into everyday materials. Its innovative manufacturing approach significantly reduces production expenses, presenting a transformational opportunity for semiconductor and electronics manufacturing.

Carbon Upcycling is a carbon technology company focused on decarbonizing hard-to-abate industries. It utilizes patented technology to permanently store carbon dioxide in industrial byproducts and minerals, converting them into high-performance alternative materials for cement and concrete. This process not only reduces the carbon impact of industrial operations but also diverts materials from landfills, supporting the principles of a circular economy. Carbon Upcycling has garnered global recognition for its innovative approach, earning accolades such as the Carbon XPrize’s X-Factor award and being named one of the most investable cleantech ventures in Canada.

Hempitecture develops sustainable materials, equipment, and systems for constructing buildings. It provides natural strategies to build energy-efficient and clean buildings. Hempitecture is based in Idaho, USA.

Puro Renewables focuses on upcycling carbon-negative biowaste to create sustainable bioplastics, aiming to significantly mitigate the environmental impact of traditional plastics. The company develops innovative bioplastic technologies that not only reduce CO2 emissions but also address long-term plastic pollution. By providing a range of cost-effective, biobased solutions for plastic manufacturers, Puro Renewables supports initiatives for reduction, reuse, and recycling. This approach enables customers and society to adopt biodegradable materials, contributing to a cleaner and more sustainable planet.

Endeavor Composites is a developer and manufacturer of advanced composite materials, focusing primarily on the automotive, aerospace, and maritime industries. The company specializes in producing defect-free, fully isotropic carbon fiber non-woven reinforcing fiber mats made from long fibers, which are created using a cost-effective and high-speed production process. Endeavor Composites offers a zero-waste solution for fiber and composite manufacturers, enabling the efficient production of various components including battery casings, access panels, and under-the-hood parts.

Lobster Robotics provides lightweight, low-cost, quick visual surveying robots to reduce surveying costs in offshore wind farms.

HyperKelp specializes in advanced ocean data technology, providing kelp-smart buoy defense and intelligence solutions. Their buoys are engineered to accommodate various payloads at sea while ensuring seamless data transmission to any surface location globally. HyperKelp's technology processes real-time sensor data from multiple sources, including cameras and microphones, enabling the early detection of hypersonic threats through innovative surface-level data access. The system is designed to function effectively in challenging weather conditions and is not hindered by weak target signals. Offering a cost-effective alternative to satellite-based systems, HyperKelp's products enhance maritime security and monitoring capabilities by delivering timely alerts and multi-domain awareness through mesh network analytics.

FutureOn is a developer of a collaborative platform focused on field design and application programming interfaces in the oil and gas subsea domain. Originating from Xvision, a part of the EXP group with over 15 years of experience in visual engineering, FutureOn aims to enhance visual engineering experiences for its clients. The platform integrates backend systems and offshore engineering software, facilitating efficient field planning, design, and activity scheduling. By streamlining workflow processes, FutureOn helps energy industries improve their business outcomes.

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 uses AI to empower a new generation of subsea vision to assess underwater environments and substructures in real-time, autonomously, at a fidelity not seen before.

Gaia AI is an MIT spinout focused on enhancing forestry management through advanced perception artificial intelligence. By leveraging technology similar to that used in autonomous vehicles, the company processes various data sources, including LiDAR, camera, and satellite imagery, to provide accurate insights into forest conditions. This approach enables landowners, project developers, and investors to assess the carbon stock and timber content of their properties effectively. Gaia AI aims to modernize the forestry industry by reducing complexities in evaluating the multifaceted values of forests, such as carbon sequestration, ecosystem services that support biodiversity, and wildfire risk management. In doing so, the company seeks to position trees as a viable and economically beneficial solution in the fight against climate change.

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 metals mining company that oversees projects from inception to completion. The company focuses on integrating high-quality assets, skilled personnel, and robust financial partnerships to effectively address the demand for various metals. By managing the entire lifecycle of mining projects, Black Mountain Resources aims to deliver value and ensure sustainable operations within the metals sector.

Varea Energy focuses on advancing geological hydrogen as a sustainable energy source by quantifying and identifying hydrogen reserves through existing seismic data. The company operates at the intersection of traditional gas exploration and advanced data analytics. It has developed a model for identifying geological hydrogen reservoirs, which aims to decarbonize the transportation sector and promote the use of hydrogen fuel in the growing green energy market. Additionally, Varea Energy provides comprehensive facility management services, including energy assessments and feasibility checks, to help commercial and industrial facilities enhance their sustainability and reduce operational costs.

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 Houston-based company that specializes in the development of flywheel energy storage systems for industrial and utility-scale applications, particularly in the storage of renewable energy sources like wind and solar. Established in 2017, Revterra employs patented technology featuring passive magnetic bearings, which allows for efficient energy storage at high speeds with low power consumption. The company aims to address power infrastructure challenges and facilitate the adoption of renewable energy while promoting electrification. By providing a grid-stabilizing kinetic battery solution, Revterra assists charge point operators in establishing new direct current fast charging locations without the need for extensive infrastructure upgrades, thereby enabling quicker and more cost-effective installations for electric vehicle charging.

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 designs and manufactures next-generation wireless systems with an initial focus on bridging the digital divide. That is, over 40 million Americans in rural areas, and over 3 billion people worldwide, can not access broadband Internet, denying them critical education, commercial, and healthcare services. Skylark pioneered Massive MIMO, now a core 5G technology, and designed its software-defined radio (SDR) systems from the ground up for long-range high-speed non-line-of-sight communications in difficult terrain. Skylark's patented technologies enable 32+ narrow beams per sector, drastically increasing coverage and capacity per tower, while simultaneously reducing interference. These innovations transform the economics of providing affordable broadband to unserved communities, and unleash the full potential of Massive MIMO in fixed and mobile environments. Skylark is a lean startup with numerous SBIR grants (NSF PI/PII/PIIB, Army PII, Air Force PI), FCC RDOF awards in multiple states, and an $11.7 5G/Next-G Air Force OTA prime contract. As a spin-out from Rice University, Skylark bootstrapped operations by selling next-generation platforms to universities and research labs worldwide, including Microsoft and multiple NSF platforms for advanced wireless research (PAWR) awardees.

ClearTrace is a software company based in Austin, Texas, specializing in automated energy and carbon accounting for various stakeholders, including investors, enterprises, and real estate owners. Founded in 2017, the company has developed a digital infrastructure that provides accurate and verifiable data on energy emissions. This technology enables organizations to substantiate their claims regarding carbon reductions and sustainability efforts, thereby helping to prevent greenwashing and offering a reliable basis for corporate decarbonization. By facilitating transparency in energy generation and consumption, ClearTrace supports its clients in achieving their sustainability and financial objectives while promoting the growth of renewable energy production.

REVOLUTION Turbine Technologies specializes in generating reliable, zero-emission electricity from excess pressure found in gas production, transmission, and distribution systems. The company aims to address a substantial global market opportunity while significantly reducing carbon emissions. Its innovative micro-expansion turbine system enhances the efficiency and resilience of natural gas delivery, transforming operations by replacing carbon dioxide-emitting combustion generators and methane-emitting valves. This technology offers scalable and modular power solutions with advanced connectivity, thereby contributing to the oil and gas sector's transition toward renewable energy sources.

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 focuses on enhancing the electrification of transportation through innovative energy storage and infrastructure systems. Its flagship product, the Veloce FastGrid™, features modular and flexible energy storage solutions that significantly improve the connection of large loads at the grid edge. By integrating the ARGOS software platform, Veloce provides a user-friendly interface for managing energy systems, facilitating secure transactions, and offering valuable insights. The company's approach reduces costs and time for developing and deploying electric vehicle charging stations by over 50%, while also enabling widespread deployment of distributed storage. Additionally, Veloce's technology supports new financing models, such as charging as a service, making it easier for clients to streamline design, construction, and operations of charging infrastructure.

Quantum New Energy is rethinking abundant sustainable energy and its technology to enable everyone to contribute to a more sustainable energy future.

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 dedicated to reducing reliance on petroleum-based plastics by offering affordable, high-grade recycled alternatives made from sustainable plant materials sourced from developing nations. The company's bioplastic products aim to diminish petroleum dependency, lower carbon dioxide emissions, and mitigate habitat destruction. By combining plant fibers with recycled or biobased polymers, Applied Bioplastics creates materials that can be easily molded or extruded for use in various industries, including household goods, automotive, appliances, electronics, and outdoor equipment. This approach not only addresses the economic barriers that prevent companies from adopting recycled plastics but also allows them to utilize carbon-negative plant materials as substitutes for traditional petrochemical feedstock without compromising quality or profit margins.

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 designs, develops, and manufactures photocatalytic reactor systems for industrial chemical reactions. Founded in 2017, the company focuses on creating reactors capable of generating fuel cell quality hydrogen from ammonia, making them suitable for small-to-medium-scale applications and hydrogen refueling stations for fuel cell vehicles. Unlike conventional chemical reactors, Syzygy's technology operates using light as an energy source and at temperatures over 1,000°F lower, which significantly reduces maintenance costs and allows for rapid production start-stop capabilities. This innovative approach not only enhances efficiency but also supports the decarbonization of hard-to-abate industries by enabling the use of renewable electricity and minimizing reliance on fossil fuels.

Applied Gaia is dedicated to preserving agriculture by producing high-quality biochar—an odorless, clean material made from waste biomass that would otherwise be burned or landfilled.

Topl is a company that specializes in blockchain infrastructure aimed at enabling businesses and communities to monetize their ethical and sustainable practices. Founded in 2017 and based in both Maastricht, Netherlands, and Houston, Texas, Topl offers blockchain-as-a-service solutions tailored for supply chain management and certification. Its primary product, the Topl Blockchain, serves as a protocol designed specifically for the impact sector, allowing organizations to verify and monetize their positive contributions. In addition to the blockchain, Topl provides a suite of hosted services and tools that facilitate user interaction with its technology, supporting projects across various industries and borders. Overall, Topl seeks to empower companies to transform their social and environmental impact into tangible assets.

Excipio Energy is an Offshore renewable energy provider that combines wind, wave, currents, OTEC, and power-to-fuel in a single floating platform.

Cemvita is a company that utilizes synthetic biology to create innovative solutions aimed at promoting sustainable energy. Its CO2 Utilization platform emulates photosynthesis and other natural processes to produce a range of products, including industrial chemicals, nutrients, and pharmaceuticals. This technology supports deep space exploration and facilitates the sustainable extraction of resources, particularly in the oil and gas, chemicals, and mining sectors. By providing environmentally friendly methods for producing lithium and other materials, Cemvita helps these industries reduce their carbon emissions and transition toward more sustainable practices.

Seasats autonomous ocean vehicles provide remote monitoring and data collection for defense and commercial customers at a fraction of the cost, logistics, and risk compared to traditional methods.

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 focused on the commercial and industrial sectors. The company specializes in streamlining the solar process, offering a comprehensive solution for the design, procurement, and installation of commercial solar plants. By simplifying these processes, SolBid enables clients to either provide solar as a service or install solar systems on their properties, ultimately helping them achieve a high return on investment.

Trellis Air is making commercially viable membrane-based dehumidifiers.

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

Studio 3E8 offers an innovative platform that enhances accessibility to metal 3D printing and reduces costs significantly.

Dottir Labs is a spectroscopy sensor technology that detects nutrients, metabolic markers, and organic and non-organic waste products.

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 offers a cost-free, scalable EV charging solution for parking lots.