Parallel Systems
Series B in 2025
Parallel Systems is a company that specializes in designing autonomous, zero-emissions freight transportation systems. Founded in 2020 and based in Los Angeles, California, the company aims to revolutionize freight transport by creating solutions that are fast, cost-effective, and environmentally friendly. By focusing on reducing highway congestion, Parallel Systems seeks to contribute to a more efficient and sustainable transportation infrastructure.
Porosity
Seed Round in 2025
Porosity is an application software company that specializes in automation solutions for the oil and gas sector. The company develops a platform aimed at simplifying operations management and regulatory compliance for operators in this industry. Porosity's software facilitates automated task management and data collection, providing businesses with valuable operational insights. By enhancing efficiency and reducing costs, the platform helps companies navigate complex environmental regulations effectively. Through its innovative technology, Porosity aims to support the operational needs of oil and gas businesses while ensuring compliance with industry standards.
Modern Synthesis
Seed Round in 2025
Modern Synthesis is a biotechnology company that develops biofabricated materials by converting bacterial nanocellulose, a by‑product of fermentation, into sustainable textiles and coatings. Its materials offer performance and aesthetics without plastics, petrochemicals, or animal inputs, enabling durable options for the fashion industry and beyond. The process leverages abundant raw materials and integrates with existing manufacturing infrastructure to scale production without starting from scratch, helping brands replace animal leather and plastic‑based textiles while reducing environmental impact and expanding design possibilities.
Acceleron Fusion
Series A in 2024
Acceleron Fusion specializes in clean energy solutions, harnessing fusion technology to power cities, charge electric vehicles, and fuel rockets. Its innovative platform employs muon-catalyzed fusion to generate abundant, clean energy, aiming to address the engineering challenges of integrating fusion power into the grid and serving various industries.
Boston Materials
Series A in 2024
Boston Materials designs and manufactures advanced composite materials, including carbon fiber pre-pregs enabled by its patented Z-axis Fiber technology, which uses vertically aligned carbon fibers to improve energy transfer. The company produces magnetically assembled carbon fiber pre-pregs and other specialty materials for semiconductors, aerospace platforms, and thermal management, delivering lightweight, high-performance solutions for electronics, aviation, electrified vehicles, and related industries. Its processes include roll-to-roll manufacturing with in-line quality control to support scalable production and consistent quality across applications.
Turnover Labs
Pre Seed Round in 2024
Turnover Labs develops innovative carbon capture technology designed to transform industrial emissions into valuable products. This process enables businesses to lower production costs and achieve carbon neutrality.
Matereal
Seed Round in 2024
Matereal is a manufacturer specializing in biobased polyurethane, aiming to replace traditional, toxic polyurethane products. The company focuses on producing environmentally safe plastics, particularly for the fashion and outdoor gear industries, providing sustainable coatings and adhesives. By offering these alternatives, Matereal helps its clients transition to a cleaner, more sustainable chemical supply chain.
Founded in 2020, Verne is a cleantech company based in Berkeley, California. It specializes in developing high-density, low-cost, and lightweight hydrogen storage systems optimized for heavy-duty trucks. Verne's innovative technology enables vehicle operators to maintain existing operations while meeting zero-emission targets.
Aether Energy is an AI-powered end-to-end platform for rooftop solar installers
Endolith
Seed Round in 2024
Endolith is a biotechnology company specializing in sustainable mining. It employs microbes, synthetic biology, and cloud computing to extract critical minerals, such as copper, from low-grade ores. Collaborating with leading mining companies, Endolith aims to commercialize its innovative technology, reducing environmental impact and supporting the clean energy transition.
AirHive
Pre Seed Round in 2024
AirHive is a technology company specializing in carbon removal. It develops a direct air capture system that is faster, more cost-effective, and energy-efficient than traditional methods. The company's innovative approach combines geochemical and DAC techniques, using fluidization to enhance the absorption of carbon dioxide by minerals, enabling significant carbon capture at an industrial scale.
Orbio is a developer of a data fusion platform that assists energy companies in reducing methane emissions. By integrating satellite data with ground data, Orbio provides precise quantification of methane emissions from energy assets worldwide. This technology allows for the aggregation of emissions data at the levels of individual assets, companies, and supply chains. As a result, Orbio benchmarks the methane emissions performance of oil and gas operators, assets, and regions, enabling companies to implement effective emission reduction strategies. The platform aids environmental engineers and asset operators in taking proactive measures to minimize their carbon footprint and mitigate energy transition risks.
Anthro Energy
Series A in 2024
Anthro Energy is developing advanced battery technologies to address key challenges in energy storage. They focus on creating ruggedized batteries that enhance safety and enable an electrified future.
Gradient’s mission is to cool the world by transforming every home to be more comfortable and healthy for the people who inhabit it — without compromising the environment. Today, heating and cooling equipment emits more greenhouse gas emissions than the entire transportation sector, and expansion in the use of cooling is projected to double these emissions in the next 30 years. However, comfortable buildings are critical for health and productivity, especially among communities that are vulnerable to the effects of climate change. Gradient’s vision is a future where everyone has access to comfortable buildings that are fully decarbonized. Our launch product is a direct-to-consumer high-efficiency and low-carbon heat pump.
Aira operates as a clean energy-tech company that provides heat pumps and home energy-saving solutions. Aira aims to lower CO2 emissions from residential heating, reduce reliance on foreign gas, and decrease consumer energy bills. Aira speeds up the electrification of residential heating with smart clean energy technology, paving the way for the net zero future that consumers need.
Cala Systems
Seed Round in 2024
Altus Thermal, founded in 2019 and based in Boston, Massachusetts, focuses on transforming thermal energy solutions for residential settings. The company aims to enhance efficiency, comfort, and user experience while providing benefits to the electrical grid. Altus Thermal develops energy technology designed to electrify residential heating, cooling, and hot water systems. By maximizing performance and facilitating better integration with renewable energy sources and other distributed energy resources, the company enables homeowners to electrify their living spaces in an efficient and cost-effective manner.
MacroCycle Technologies
Pre Seed Round in 2023
MacroCycle Technologies is a company developing a chemical recycling process to convert polyethylene terephthalate (PET) and polyester-fiber waste into virgin-grade plastics. Their proprietary technology, based on synthesizing cyclic macromolecules, enables the production of recycled PET with lower energy use than traditional methods. This process offers a sustainable, zero-carbon, and cost-competitive solution for plastic upcycling, contributing to a circular economy.
Pioneer
Seed Round in 2023
Pioneer is a company that specializes in utilizing artificial intelligence to assist businesses in securing grants, contracts, loans, and tax credits. Its AI-powered platform streamlines the application process by generating drafts and enhancing the volume of applications submitted. By providing secure access to government incentives from various federal, state, and local databases, Pioneer enables climate technology companies to concentrate on their primary operations while effectively tapping into non-dilutive funding opportunities. With a team of experts, Pioneer aims to optimize the grant-seeking process, making it more efficient for its clients.
Byterat
Seed Round in 2023
Byterat develops an artificial intelligence-driven data platform for secure and scalable battery data management. Its cloud-based machine learning solution forecasts battery performance in real-time using electrochemical data, benefiting users with early insights into energy asset performance.
Aira operates as a clean energy-tech company that provides heat pumps and home energy-saving solutions. Aira aims to lower CO2 emissions from residential heating, reduce reliance on foreign gas, and decrease consumer energy bills. Aira speeds up the electrification of residential heating with smart clean energy technology, paving the way for the net zero future that consumers need.
Osmoses
Seed Round in 2023
Osmoses specializes in decarbonizing gas separations using innovative membrane technology. Its solution efficiently purifies gas molecules, reducing energy consumption and capital requirements while integrating seamlessly into existing industrial processes. This enables energy producers to achieve cleaner and more sustainable operations.
Vaulted Deep
Seed Round in 2023
Vaulted Deep specializes in innovative waste management solutions. It employs patented geologic slurry injection technology to permanently sequester organic wastes underground, achieving significant carbon dioxide removal while promoting local environmental health.
Noya develops carbon capture technology that enables industrial facilities to remove CO2 from the atmosphere by retrofitting existing equipment. The company adds a non-toxic CO2 absorbing chemical blend to current cooling towers, allowing simultaneous cooling and carbon capture without major mechanical changes to the towers. The captured CO2 is then sold to companies that use it as a raw material, supporting other industries' climate initiatives. Noya's approach is aimed at accelerating the world’s transition toward a carbon-negative economy by providing a modular, retrofit-based solution that tackles emissions from industrial cooling processes.
Ruuf
Pre Seed Round in 2023
Ruuf is a solar marketplace that connects homeowners with solar installers and lenders.
pH7 is a cleantech company focused on sustainable extraction and refining of platinum group metals from primary resources, mining residues, and recycling streams. Its process employs green, biodegradable solvents in a closed-loop system to extract PGMs on-site at mines, scrap yards, and recycling facilities, avoiding smelting and minimizing waste and emissions. The technology enables economical, on-site recovery of precious metals from both primary and secondary resources, reducing environmental impact and supporting the transition to renewable energy by ensuring a secure supply of PGMs for catalysts and other applications.
Rubi Laboratories
Seed Round in 2023
Rubi Laboratories is a California-based company that specializes in the development of technology to manufacture carbon-negative textiles. The firm utilizes innovative sustainable solutions to convert carbon emissions into natural fibers, resulting in biodegradable textiles. Its technology directly synthesizes threads, providing a natural resource for the production of viscose that is carbon-negative, as well as being water-chemical, land-neutral, traceable, and environmentally friendly. Rubi Laboratories aims to address the environmental impact of textile manufacturing by offering a more sustainable alternative in the industry.
GlacierGrid
Series A in 2023
GlacierGrid is a company specializing in energy management solutions. It employs IoT technology for real-time energy usage optimization, helping businesses balance savings, efficiency, and sustainability while reducing their carbon footprint.
wasted*
Seed Round in 2023
Wasted* is a Vermont-based company founded in 2020 that specializes in transforming human waste into effective, safe, and sustainable fertilizers. Through its innovative circular sanitation technology, Wasted* separates urine from feces, preserving the nutrients contained in both while eliminating the need for chemical additives. This process not only enhances the value of human waste but also promotes a circular sanitation economy, effectively connecting individuals to their local environment. By enabling clients to convert waste into a sustainable resource, Wasted* addresses waste treatment and disposal challenges while contributing to environmental sustainability.
Verse provides software for organizations to understand, plan, and manage clean energy. Its SaaS platform, Aria™, leverages generative AI to help companies define clean energy goals and plan, procure, and manage optimal portfolios of clean energy assets at least cost. Customers can set parameters that target specific goals (e.g., cost, emissions, or hourly matching) and optimize for annual matching, emissions matching, or hourly matched carbon-free energy (CFE). By reducing transaction costs by up to 70% and providing real-time analysis within minutes, Aria helps scale and accelerate the clean energy transition.
AirMyne
Seed Round in 2022
AirMyne is a next-generation Direct Air Capture company focused on removing carbon dioxide from the atmosphere. Established in 2022 by experienced professionals in the deep tech sector through Y Combinator, the company has developed a patented technology that employs a liquid capture agent combined with a low-temperature thermal regeneration process. This innovative approach allows for integration with various low-carbon energy sources and utilizes inputs that are both cost-effective and easily sourced. By providing efficient carbon removal solutions, AirMyne aims to assist companies and organizations in achieving their net-zero emissions targets while scaling its operations in the carbon removal sector.
Zitara Technologies
Series A in 2022
Founded in 2019, Zitara Technologies specializes in predictive battery management software for electric vehicle fleets. Its platform offers real-time operations and analytics, enhancing safety and extending battery lifespan.
Keel.Labs
Series A in 2022
Keel Labs is a biomaterials company that focuses on developing ocean-based materials derived from renewable resources, particularly seaweed. The company aims to address the ecological damage caused by the fashion industry by creating durable and rapidly degradable yarns from kelp. Through its innovative platform, Keel Labs integrates scientific design and waste management into textile production, offering an alternative to conventional textiles for the footwear and apparel industries. This approach not only provides a functional resource but also emphasizes environmental sustainability, allowing for a more responsible and accessible option in material sourcing.
Paces
Pre Seed Round in 2022
Paces is developing a data platform aimed at enhancing the development and operation of green infrastructure projects. By providing actionable data signals across 3,500 U.S. counties, the platform encompasses a variety of critical information, including environmental, permitting, zoning, interconnection data, and competition risks. Additionally, Paces offers modeled signals that assess climate risks, profitability forecasts, and parcel rankings. This granular data is tailored to specific land parcels and green infrastructure assets, enabling developers, operators, and investors to make informed decisions about profitable construction and investment in sustainable projects.
Modern Synthesis
Seed Round in 2022
Modern Synthesis is a biotechnology company that develops biofabricated materials by converting bacterial nanocellulose, a by‑product of fermentation, into sustainable textiles and coatings. Its materials offer performance and aesthetics without plastics, petrochemicals, or animal inputs, enabling durable options for the fashion industry and beyond. The process leverages abundant raw materials and integrates with existing manufacturing infrastructure to scale production without starting from scratch, helping brands replace animal leather and plastic‑based textiles while reducing environmental impact and expanding design possibilities.
Brimstone
Series A in 2022
Brimstone develops a carbon-negative process for producing ordinary portland cement and supplementary cementitious material. Its technology uses calcium silicate rock instead of limestone, delivering identical products at scale while significantly reducing CO2 emissions.
Rubi Laboratories
Seed Round in 2022
Rubi Laboratories is a California-based company that specializes in the development of technology to manufacture carbon-negative textiles. The firm utilizes innovative sustainable solutions to convert carbon emissions into natural fibers, resulting in biodegradable textiles. Its technology directly synthesizes threads, providing a natural resource for the production of viscose that is carbon-negative, as well as being water-chemical, land-neutral, traceable, and environmentally friendly. Rubi Laboratories aims to address the environmental impact of textile manufacturing by offering a more sustainable alternative in the industry.
Founded in 2018, Quaise is an innovative energy company based in Cambridge, Massachusetts. It specializes in developing and commercializing advanced millimeter-wave drilling systems to access geothermal energy sources worldwide, overcoming geographical limitations.
Olympian Motors
Pre Seed Round in 2022
Olympian Motors is a New York-based startup manufacturing electric vehicles (EVs) using a proprietary modular system that reduces tooling and labor costs by 80% and speeds up production lead time by 60%. The company aims to revolutionize traditional car manufacturing in the U.S., bringing agility, speed, and cost-efficiency to the industry. Olympian Motors produces EVs in Brooklyn and Detroit facilities, with an initial capacity of 320 vehicles annually, planning to expand to 20,000 vehicles by 2025. Their EVs prioritize aesthetics, nature, and minimalism, using steel, wood, and recycled materials instead of plastic.
Kula Bio, Inc. is a biotechnology company focused on developing sustainable solutions for modern agriculture. Founded in 2018 and headquartered in Somerville, Massachusetts, the company specializes in biofertilizers that harness nitrogen-fixing microbes energized by renewable energy sources. This innovative approach allows Kula Bio to produce organic nitrogen fertilizers that aim to replace traditional synthetic fertilizers, promoting both agricultural productivity and environmental stewardship. By enhancing natural microbial processes, Kula Bio’s products enable farmers to improve crop yields while prioritizing sustainability and eco-friendliness in farming practices.
Moment Energy
Seed Round in 2021
Moment Energy specializes in battery energy storage systems that utilize repurposed electric vehicle batteries. Its solutions aim to provide clean, reliable, and cost-effective energy storage for both on-grid and off-grid applications.
Kula Bio
Seed Round in 2021
Kula Bio, Inc. is a biotechnology company focused on developing sustainable solutions for modern agriculture. Founded in 2018 and headquartered in Somerville, Massachusetts, the company specializes in biofertilizers that harness nitrogen-fixing microbes energized by renewable energy sources. This innovative approach allows Kula Bio to produce organic nitrogen fertilizers that aim to replace traditional synthetic fertilizers, promoting both agricultural productivity and environmental stewardship. By enhancing natural microbial processes, Kula Bio’s products enable farmers to improve crop yields while prioritizing sustainability and eco-friendliness in farming practices.
GlacierGrid
Funding Round in 2021
GlacierGrid is a company specializing in energy management solutions. It employs IoT technology for real-time energy usage optimization, helping businesses balance savings, efficiency, and sustainability while reducing their carbon footprint.
Therma
Venture Round in 2021
Therma Holdings is a specialized mechanical contractor that provides comprehensive design and build services for complex systems in mission-critical environments. The company excels in HVAC systems, high purity process piping, and process controls, catering primarily to cleanrooms, laboratories, and high-tech manufacturing facilities. With a robust suite of in-house capabilities, including engineering, design, fabrication, controls, pre-fabrication, and installation, Therma is well-equipped to meet the intricate demands of its clients. By focusing on delivering tailored solutions, Therma ensures the efficient operation of critical facilities across various industries.
Founded in London in 2017, ZELP develops wearable technology for livestock. Its primary product is designed to oxidize methane emissions from cattle into carbon dioxide, thereby reducing the environmental impact of the livestock industry.
Founded in 2018, Quaise is an innovative energy company based in Cambridge, Massachusetts. It specializes in developing and commercializing advanced millimeter-wave drilling systems to access geothermal energy sources worldwide, overcoming geographical limitations.
SoCar operates an eco-friendly car-sharing platform in South Korea, connecting users who travel similar routes. Founded in 2012, it offers car booking via website and smartphone apps, with over 1.7 million registered users.