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Startup Portfolio

62 strong. And growing. Tackling global billion-dollar markets and hard-to-abate sectors, our climate tech startups are addressing the emissions challenges that will make or break this decisive decade.

What do the Keeling Curve and startups have in common?

Each time we launch a new startup cohort we name it with a critical timestamp representing the year’s peak atmospheric carbon dioxide concentration (represented in parts per million [ppm]), based on the Keeling Curve. It’s a little bit wonky—but so is our founding name.

STARTUPS BY COHORT:
  • All
  • Ag and Land Use
  • Batteries
  • Biofuels / Synfuels / Chemicals
  • Building Heat
  • Buildings
  • Buildings (cooling / heating / envelopes)
  • Buildings (lighting / appliances)
  • Carbon Capture and Utilization
  • Carbon Markets
  • Cohort 417
  • Cohort 419
  • Electric Mobility
  • Electricity
  • Enabling Software
  • Financing and Project Development
  • Fugitive Emissions
  • Hydrogen
  • Industry
  • Long-duration Storage
  • Low-carbon Materials
  • Other
  • Power Electronics and Hardware
  • Renewable Energy
  • Renewable Generation
  • Renewable Process Heat
  • Transportation
  • Vehicle Efficiency
  • Waste

3E Nano

Making low-E window coatings up to 50% cheaper than traditional alternatives.

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Antora Energy

Building inexpensive long-duration energy storage using high-efficiency thermophotovoltaics.

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Banyan Infrastructure

Making it easier for lenders and borrowers to finance sustainable infrastructure projects.

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BasiGo

Creating the future of clean, electric public transit in Africa.

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betteries AMPS GmbH

Providing mobile, modular, and multipurpose power systems based on upcycling EV batteries.

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Blue Frontier

Reducing air conditioning-related energy consumption up to 90%.

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BlueDot Photonics

Enabling perovskite-based photovoltaics that improve the efficiency and durability and lower the costs of solar energy.

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Celadyne Technologies

Developing a new proton exchange membrane (PEM) for use in fuel cells and electrolyzers.

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CleanFiber

Providing carbon-negative cellulose insulation that outperforms conventional products, without added costs.

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Compact Membrane Systems

Developing membrane solutions for hard-to-decarbonize industrial sectors and applications.

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Daanaa

Providing power gains by increasing efficiency and eliminating wires, cables, and connectors in diverse applications.

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Darcy Solutions

Boosting the efficiency, reducing cost, and reducing the number of boreholes needed for ground-source heat pumps.

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Digital Harvest

Using machine learning technology to enhance agricultural yields and increase profits for sustainable agriculture farmers.

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Eavor Technologies

Creating the world’s first truly scalable form of clean, baseload, and dispatchable power.

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ecountabl

Democratizing access to corporate social and environmental performance data to empower consumers' purchasing decisions.

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Enchi Corporation

Driving the next generation of biofuels, starting with non-food cellulosic ethanol.

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Energy Dome

Developing a low-cost and efficient system for long-duration electricity storage using liquid CO2.

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Energy Integration Inc.

Designing and installing mechanical vapor recompression (MVR) systems for efficient, electrified, decarbonized biofuels production.

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Flair

Developing a connected smart device that allows mini-split air conditioners to participate in utility demand response programs, as well as a smart vent that enables room-by-room temperature control and improved intelligence.

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Frost Methane

Helping to identify and neutralize concentrated sources of methane worldwide, including larger anthropogenic methane sources such as abandoned and active coal mines.

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Gaiascope

Making low-carbon energy assets more profitable.

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Gricd

Tackling the challenge of cold chain logistics for agricultural and pharmaceutical suppliers across sub-Saharan Africa and South Asia.

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iBeam Materials

Developing a transformative new manufacturing technology for low-cost, high-efficiency, LED light.

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Ionic Liquid

Replacing HFC refrigerants with proprietary additives that allow practical use of carbon dioxide as a cooling system refrigerant.

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Iris Light Technologies

Developing a tunable laser that can be printed directly onto semiconductor chips for improved data center efficiency.

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Kanin Energy

Helping industrial clients capture waste heat to produce clean, baseload power using an organic rankine cycle generator.

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LimeLoop

Reinventing shipping through upcycled reusable packaging materials and a single app that streamlines shipping logistics and security, and enables customers to track their assets and environmental impact.

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LoadExx

Providing reliable, electrified choices for last-mile delivery of goods across India.

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M2 Thermal Solutions

Developing refrigerant-free AC systems using novel membranes to remove water vapor.

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Mangrove Lithium

Developing an electrochemical technology that enables the lowest-cost production of lithium hydroxide, commonly used for electric vehicles, electronics, and renewable energy storage.

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Membrion

Producing low-cost, high-performance ion-exchange membranes for water purification, redox flow batteries, and hydrogen electrolyzers and fuel cells.

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Mission Zero Technologies

Developing a new chemistry to enable energy-efficient, decentralized, and low-cost direct air capture (DAC) of carbon dioxide emissions.

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MOJO Green

Accelerating the transition to electric mobility and renewables grid integration through innovative energy storage technologies.

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Mootral

Developing a natural feed supplement that significantly reduces methane emissions from ruminants (e.g., cattle).

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Mycotech Labs

Producing vegan leather from crop waste and mushrooms.

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Myst AI

Leveraging AI for hyper-accurate electricity demand and renewable generation forecasts, supporting low-carbon power grids.

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NCX

Reimagining forest carbon credits to unlock millions of acres of land that was previously excluded from carbon marketplaces.

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Nithio Holdings

Solving the most thorny constraints to reaching scale for deploying pay-to-go energy service financing in sub-Sahara Africa.

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OneWatt

Using non-invasive sensors combined with AI to monitor motor performance and predict maintenance issues at industrial plants.

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Project Vesta

Harnessing the power of the oceans to remove excess CO2 from the atmosphere.

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Quanterra Systems

Providing continuous, accurate carbon sequestration measurements at a competitive price.

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Rebound Technologies

Developing an innovative freeze point suppression refrigeration cycle to increase throughput and operational efficiency to frozen food processors and cold storage and distribution facilities.

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Reeddi

Improving energy access by providing reliable power to customers using a low-cost, on-demand solar kiosk battery-charging module.

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Refillable

Popularizing smart reusable and refillable packaging and saying bye to single-use plastic.

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rePurpose Global

Channeling critical financing towards innovations to solve the plastic problem by redesigning and reducing the use of plastic altogether.

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RIZOME

Achieving cost parity with wood to provide a fungible structural alternative with significant social, economic, and environmental benefits as a building material.

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SeeO2 Energy

Efficiently converting carbon dioxide (CO2) and/or water into marketable and clean value-added products using reversible fuel cell technology.

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Shimmer Industries

Optimizing lighting to reduce electricity usage by up to 85%.

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Sironix Renewables

Offering a bio-based technology to cleaning brands, producers, and consumers to reduce the environmental footprint of a huge industry—allowing all to shop a product that fulfills all needs: sustainability, safety and performance.

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Summit Nanotech

Developing a novel low-cost, direct lithium extraction (DLE) process that avoids the need for evaporation ponds and large chemical-based refineries.

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SunPath

Using solar collectors and fiber optics to bring sunlight into buildings, thus improving indoor lighting and saving energy.

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Switched Source

Helping distribution system operators better utilize legacy grid infrastructure by providing power-electronics that increase reliability and efficiency—increasing the system’s capacity to host distributed renewable energy.

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TexPower

Providing cobalt-free, high-energy, drop-in cathodes for lithium batteries helps decentralize the supply chain, drive down costs, and support a growing electric vehicle market.

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Three Wheels United

Offering tailored solutions to overcome traditional barriers to providing financing for low-income groups through an innovative business model that makes a positive impact on auto drivers as well as the environment.

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Transaera

Developing a new class of affordable, energy-efficient, sustainable cooling systems.

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Traxen

Leading the trucking technology market into a decarbonized, automated, and connected future, while offering a solution that can be readily deployed today.

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TS Conductor

Optimizing the power grid by adding capacity and controlling line loss to reduce infrastructure costs and minimize environmental impacts.

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TZOA

Monitoring air quality directly at the source of supply provides superior insights into circulated air quality—leveraging such insight can help customize ventilation schedules, enhance filtering and airflow, and more to improve indoor air quality.

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Utvyakta Solutions

Enabling intelligence for air compressors.

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Versogen

Producing green hydrogen at scale—reliably and affordably.

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XL Batteries

Developing a novel chemistry for a 20+ year, non-flammable flow battery.

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Zinc8 Energy Solutions

Developing innovative battery technology that uses zinc and air as fuel, resolving the intermittent and unpredictable nature of renewable sources.

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