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Startup Portfolio

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.

Meet Our Latest Startups: Cohorts 22-2 and 22-3!

As part of our effort to move the needle—and the market—on climate tech, D3 is proud to announce Cohorts 22-2 and 22-3. Alongside a general cohort (22-2) comprising 29 promising climate tech startups, we’re also excited to introduce our first focused cohort of 5 additional startups (22-3) zeroing in on a critical area: carbon dioxide removal (CDR).

  • 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 22-1
  • Cohort 22-2
  • Cohort 22-3 (CDR)
  • Cohort 417
  • Cohort 419
  • Cold Chain
  • DAC
  • 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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44.01

Enhancing a nature-based mineralization process that provides a safe, permanent, scalable and cost-effective CO2 removal for CO2 captured from the atmosphere and from hard-to-abate industries.

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Aepnus Technology

Developing efficient and sustainable processes to electrify the manufacture of lithium chemicals needed to make batteries.

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Aeromutable

Reducing aerodynamic drag on trucks with an AI-controlled air injection system.

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Allegro

Developing low-cost energy storage solutions for many applications ranging from fast frequency response (FFR) and over electric mobility, to long-duration energy storage (LDES).

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ALT Mobility

Electrifying urban mobility in India with simplified, affordable commercial EV leasing solutions.

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Altus Thermal

Electrifying domestic hot water to deliver greater savings, ensure user comfort, and reduce carbon emissions.

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Antora Energy

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

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AtmosZero

Decarbonizing industry with a high efficiency drop-in replacements for industrial process heat.

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Aurora Hydrogen

Developing a low-cost, distributed, clean hydrogen production technology.

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Automat Solutions

Developing high-performance battery materials such as high-performance electrolytes for electric vehicles via an innovative AI-robotics platform.

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Avnos

Developing a novel Direct Air Capture technology that removes both water and carbon from the atmosphere in low-energy, fully electrified system.

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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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BattGenie

Developing an advanced battery management software that enables safer, longer-lasting and faster charging lithium-ion batteries.

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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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Brimstone Energy

Developing a CO2-free process to produce Portland cement, the exact same material that the industry uses today.

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Cache Energy

Developing long duration energy storage technology that can be safely installed anywhere and transported everywhere.

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Celadyne Technologies

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

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Cell Propulsion

Electrifying commercial vehicle fleets in India by offering full-stack solutions, comprising electric trucks, operations and management support, charging, and energy and asset management services.

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CleanFiber

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

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ClimateCrop

Increasing photosynthesis efficiency in plants, increasing their yield and resilience.

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ClimateWells

Preventing abandoned and orphaned oil and gas wells.

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CoFlow Jet Wind Turbines

Increasing the annual power output of wind turbines by 20%, and reducing the levelized cost of energy by 30%.

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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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DiviGas

Improving the efficiency and adoption rate of cutting edge gas and renewable energy technologies by providing a critical subcomponent, gas separation membranes.

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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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EH Group Engineering

Solving the challenge of cost and complexity in hydrogen fuel cells that has hindered its widespread deployment.

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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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FSC Technologies

Delivering a cost effective and environmentally sustainable technology to the concrete construction industry by replacing steel reinforcement with new FRP technology and utilizing low carbon cements.

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Gaiascope

Making low-carbon energy assets more profitable.

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Geminus.AI

Fusing physics and AI to accurately predict future system behavior, enabling peak energy optimization of today's processes and faster scale-up of tomorrow's transformative climate technologies.

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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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Kaiterra

Empowering companies to improve health and wellbeing for occupants and planet alike with best-in-class air quality monitoring technology.

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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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Kazam

Increasing adoption of zero emission vehicles by building EV infrastructure for 2 wheeler, 3 wheeler & 4 wheeler electric vehicles.

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Krosslinker

Leveraging the power of aerogels to build sustainable and energy efficient solutions.

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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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Lumen

Automating the profitable decarbonization of commercial buildings.

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LuxWall

Moving us closer to cost-effective net zero buildings by reducing building heating and cooling energy draw by up to 40%.

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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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Materials Nexus

Accelerating the discovery and development process of new net-zero materials.

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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

Enabling the removal of CO2 from air for much lower costs and energy footprints than possible with other technologies today.

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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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OMC H2

Offering a new paradigm for green hydrogen and synthetic hydrocarbons / synfuels using heat and low cost, widely available materials that integrate with existing industries and markets

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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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Parthian Energy

Preventing battery fires using a patented platform of battery diagnostics that improve safety while reducing cost for manufacturers.

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Perl Street

Creating a platform to streamline project financing of emerging distributed infrastructure assets.

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Planet A Energy

Collecting and storing solar energy for when its needed, for up to months at a time, enabling our planet to truly retire fossil fuel power plants.

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Power to Hydrogen (P2H2)

Delivering technology to make clean hydrogen competitive with fossil fuels to decarbonize mobility, industry, and power production.

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Prescinto Technologies

Enhancing the performance of renewable energy or energy storage assets, streamlining operations and maintenance, and maximizing returns.

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Pulsenics

De-risking the scale-up and operations of industrial electrochemical systems.

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PwrCor

Capturing and reducing heat being dumped into the environment, and using that heat energy to reduce legacy power pollution and generate green, emission-free electric power.

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Quanterra Systems

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

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RACEnergy

Establishing the most extensive battery swapping network in India to enable electrification across two- and three-wheeler transport—the most extensively used modes of transportation in this part of the world.

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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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RepAir

Developing a novel electrochemical cell that separates CO2 from the air in a highly efficient and cost-effective process that operates at ambient temperature solely by renewable electricity.

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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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SafEarth

Deploying high-quality industrial-scale distributed solar plants efficiently, transparently, and quickly.

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Seaforestation

Pioneering algae production in deeper water away from coastlines.

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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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Skyven

Delivering low-carbon industrial process heat as a service.

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SoMax

Transforming wet biomass (e.g. sewage, spent grains, food waste) into circular materials used to either replace fossil fuels or to capture and durably sequester carbon in the built environment.

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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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Sustaera

Developing a low-cost, scalable technology solution to directly capture and remove carbon dioxide from the air.

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SwitchDin

Providing scalable, proven, and profitable smart-grid solutions.

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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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Sylvatex

Improving the efficiency of lithium-ion battery manufacturing to decarbonize our future energy and transportation sectors.

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TekUncorked

Improving reliability and reducing losses on India's electricity grid.

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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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Tvasta

Facilitating rapid construction of affordable and sustainable structures using 3D printing for communities in India and beyond.

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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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Vesta

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

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Volt14 Solutions

Volt14 offers battery cell producers fully integrated, ready to use silicon-dominant anode technology that increases energy stored for battery size by up to 40% while reducing cost to produce cells.

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Wild Microbes

Solving a lynchpin challenge in displacing petrochemicals - finding the right microbes to produce commodity products at industrial scale.

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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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