Climate Pledge Fund

Established in 2020 by Amazon, the Climate Pledge Fund is dedicated to investing in innovative companies that focus on sustainable technologies and services. With an initial commitment of $2 billion, it aims to facilitate a transition to a low-carbon economy.

Ken Alston

Investor

Christina Chen

Investor

Nick Ellis

Principal

Daniel Gross

Investor

Rodrigo J Prudencio

Partner

Adiari Vazquez

Investor

Phoebe Wang

Investment Partner

43 past transactions

Hoofprint Biome

Series A in 2025
Hoofprint Biome is a biotechnology company that develops probiotics and natural enzymes to enhance the sustainability of ruminant livestock production. Their products improve cattle health and digestive care by reducing methane emissions, thereby enabling the livestock industry to adopt more sustainable practices through microbiome engineering.

Cyclic Materials

Series B in 2025
Cyclic Materials provides recycling services that recover rare earth elements to reduce the need for new mining and accelerate the transition to electric mobility and clean energy. The company focuses on reclaiming rare earth magnets from automotive and renewable energy sectors, enabling customers to supply wind turbines, electric vehicles, and electronics while cutting emissions and strengthening local supply. Through its platform, it pursues a circular supply chain by recovering critical metals from discarded and landfill-bound products, helping industries lower environmental impact and increasing the resilience of the material supply.

Moment Energy

Series A in 2025
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.

X-energy

Series C in 2024
X-energy is a developer of advanced modular nuclear reactors and fuel technology for clean energy generation. The company manufactures fuel that seals uranium particles in a protective coating, making meltdown impossible. It develops safe and efficient reactors and proprietary fuel to deliver reliable, zero-carbon, affordable energy to people worldwide. The simplified, modular, and high-temperature gas reactor design expands applications and markets for the deployment of nuclear technology.

14Trees

Series A in 2024
14Trees accelerates the delivery of affordable housing in Africa by translating construction innovations from the lab to the field and partnering with banks and contractors to implement housing projects. The company also produces environment-friendly bricks using 3D printing technology to speed the construction of sustainable buildings and social infrastructure such as schools and workplaces. Through these efforts, 14Trees aims to improve living conditions, support livelihoods, and foster inclusive communities by making affordable, eco-conscious construction scalable.

Paebbl

Series A in 2024
Paebbl is a carbon storage company that uses mineralization technology to convert carbon dioxide captured from industrial facilities or the atmosphere into carbon-negative materials for construction and other products, such as paper. The process aims to be energy efficient to enable scalable production of carbon-negative materials and lower net emissions. Paebbl was founded in 2021 by Pol Knops, Jane Walerud, Marta Sjögren, and Andreas Saari.

MOLG

Seed Round in 2024
MOLG specializes in developing digital tools and automation solutions for businesses in the manufacturing sector. The company employs artificial intelligence and robotics to create autonomous micro-factories, promoting a circular economy by enhancing product sustainability and cost-effectiveness.

ZeroAvia

Series C in 2024
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.

44.01

Series A in 2024
44.01 specializes in CO2 removal from the atmosphere by accelerating the natural weathering process in peridotite rocks, converting captured CO2 into stable minerals.

Subeca

Series A in 2024
Subeca, Inc. is a technology company specializing in water management systems that provide continuous utility control. Founded in 2008 and headquartered in San Diego, California, Subeca has developed an end-to-end platform that integrates wireless hardware and software solutions. This platform enables both consumers and water suppliers to access and manage water usage remotely, offering features such as real-time meter data, remote valve control, and leak detection. The system is designed to reduce water waste and prevent mishaps by providing notifications for water use and potential leaks. Additionally, it allows water agencies to remotely control water supplies for individual properties and share data across departments for improved information exchange and analytics. Subeca's technology is compatible with existing infrastructure, making it a scalable and cost-effective solution for more efficient water resource management.

Verne

Seed Round in 2024
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.

Windfall Bio

Series A in 2024
Windfall Bio is an innovative company based in San Mateo, California, that addresses climate change by transforming harmful methane emissions into organic fertilizer. Established in 2022, the company utilizes methane-eating microbes to capture methane from various sources, including agriculture, oil and gas, and waste management. This nature-based technology not only reduces the methane footprint of these industries but also improves their operational efficiency and profitability while minimizing the negative environmental impacts associated with synthetic fertilizers. By providing farmers and other producers with the means to convert methane into valuable soil nutrients, Windfall Bio fosters a sustainable agricultural future and contributes positively to environmental conservation. The company is backed by prominent venture capital firms, reflecting its potential to make a significant impact in the fight against climate change.

CarbonCapture

Series A in 2024
CarbonCapture is a climate technology company focused on developing direct air capture (DAC) machines designed to extract carbon dioxide from the atmosphere. The company aims to combat climate change by utilizing innovative molecular sieves and harnessing low-cost renewable energy sources, such as solar power. Its systems are equipped with advanced AI controllers to optimize performance and efficiency, allowing for large-scale and cost-effective CO2 removal. By providing these solutions, CarbonCapture enables clients to significantly reduce their carbon emissions and contribute to a more sustainable future.

Glacier

Venture Round in 2024
Glacier develops AI-enabled recycling robots for recycling facilities. Founded in 2019 and headquartered in San Francisco, California, the company creates affordable, high-performing, and space-efficient robots that automate the sorting of recyclable materials. Its platform combines artificial intelligence-powered sensors and robotics to streamline operations, improve sorting accuracy, and increase profitability for waste facilities.

Sunfire

Series E in 2024
Sunfire is a company that specializes in developing and manufacturing systems for renewable industrial gas and fuel production. It focuses on creating substitutes for fossil fuels, such as mineral oil and natural gas, through innovative technologies like electrolyzers and solid oxide cells. These systems convert renewable electrical energy from sources like wind farms, hydropower plants, and photovoltaic systems into fuels and gases, including renewable hydrogen and syngas. By enabling the chemical, fuel, and steel industries to transition away from fossil energy, Sunfire aims to provide sustainable energy solutions that are available whenever needed, thus integrating renewable energy into existing infrastructures.

Hippo Harvest

Series B in 2024
Founded in 2019, Hippo Harvest is a technology-driven agriculture company based in Half Moon Bay, California. It specializes in controlled environment agriculture, using plant science, machine learning, and robotics to grow vegetables sustainably and safely in greenhouse environments.

Koloma

Series B in 2024
Koloma is a company specializing in geologic hydrogen production. It leverages proprietary technology, data, and expertise to identify and develop geologic hydrogen resources. The company's data-driven approach aims to reduce global carbon emissions, enabling businesses to lower their environmental impact.

ZeroAvia

Series C in 2023
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.

CarbonCapture

Series A in 2023
CarbonCapture is a climate technology company focused on developing direct air capture (DAC) machines designed to extract carbon dioxide from the atmosphere. The company aims to combat climate change by utilizing innovative molecular sieves and harnessing low-cost renewable energy sources, such as solar power. Its systems are equipped with advanced AI controllers to optimize performance and efficiency, allowing for large-scale and cost-effective CO2 removal. By providing these solutions, CarbonCapture enables clients to significantly reduce their carbon emissions and contribute to a more sustainable future.

CarbonCure

Venture Round in 2023
CarbonCure Technologies Inc. is a Canadian company that specializes in technology designed to sequester carbon dioxide (CO2) in concrete production. Founded in 2007 and headquartered in Dartmouth, Nova Scotia, the company provides a retrofit solution for existing concrete plants, allowing producers to incorporate waste CO2 from industrial emitters into their concrete products. During manufacturing, this CO2 is chemically converted into solid mineral carbonates, enhancing the strength of the concrete while reducing its carbon footprint. CarbonCure's innovative approach enables concrete manufacturers to produce green concrete without compromising quality or cost, thereby facilitating a shift towards sustainable building practices. The company also offers marketing and environmental reporting services to support its customers in the growing green building market. By licensing its technology at a low capital expenditure, CarbonCure generates a recurring revenue stream while contributing to the reduction of greenhouse gas emissions in the concrete industry.

Genecis

Venture Round in 2023
Genecis is an early-stage organic waste processing startup that uses biotechnology to convert waste into biodegradable plastics and other high-value materials. It converts organic waste into PHA (Polyhydroxyalkanoate), a biodegradable, compostable, and non-toxic polymer that can be tuned to replace a wide variety of traditional plastics. PHA can be used for single-use plastics, clothing and textiles, automotive interiors, medical tools and products, and food contact applications.

Forum Mobility

Series A in 2023
Forum Mobility provides zero-emission heavy-duty trucking solutions through charging depots and a network of convenient, secure locations near ports and major drayage routes. It offers overnight and daytime charging, cost-competitive purchase and lease options for electric heavy-duty trucks, and access to this network, enabling fleets, owner-operators, and small businesses to reduce fuel and operating costs, meet emission regulations, and free up space at facilities as they switch to electric power.

Moxion Power

Series B in 2022
Moxion Power is a developer of zero-emission generators and off-road equipment, focusing on providing sustainable energy solutions to various sectors, including construction, events and entertainment, utilities, electric vehicle fleet operators, and government agencies. The company specializes in temporary mobile power units that operate on electric power and feature automatic swapping functionality. This innovative approach allows clients to meet their temporary energy requirements in an environmentally friendly manner, thereby promoting cleaner energy usage across multiple industries.

Turntide Technologies

Venture Round in 2022
Turntide Technologies specializes in sustainable technologies that reduce energy consumption and operating costs in buildings, agriculture, and electric transport. It has developed an efficient electric motor system based on switched reluctance technology, managed by cloud software and connected to precise controls via IoT. The company aims to eliminate the roughly 25% of global electricity wasted by legacy motors, accelerating the transition from fossil fuels toward renewable energy. Founded in 2013 and headquartered in Sunnyvale, California, Turntide's solutions target improvements in space conditioning, maintenance, and refrigeration energy use.

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.

ZeroAvia

Series B in 2021
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.

Hippo Harvest

Seed Round in 2021
Founded in 2019, Hippo Harvest is a technology-driven agriculture company based in Half Moon Bay, California. It specializes in controlled environment agriculture, using plant science, machine learning, and robotics to grow vegetables sustainably and safely in greenhouse environments.

Resilient Power Systems

Seed Round in 2021
Resilient Power Systems provides power converters such as DCFC supercharging stations in a box and renewable H2 energy power converters. The company is developing products to accelerate the deployment of EV charging systems everywhere, they deliver packages to customers, and its technology has the potential to change the delivery of packages. Resilient Power's commercial applications provide EV charger-to-grid technology that is radically efficient. When it comes to municipal, residential development, retail, hospitality, or other applications where time and space are limited, Resilient's line of advanced, solid-state power stations is the answer. Its ultra-compact EV charging depots connect directly to the existing distribution grid, allowing clients to build EV fleets and public charging stations in days rather than months, reducing costly and disruptive site construction. When Resilient's line of high-voltage power electronics is added to the electric power grid, it improves grid efficiency and reliability.

Infinium

Venture Round in 2021
Infinium produces synthetic fuels from renewable energy and waste carbon dioxide, offering a lower-carbon alternative for transportation systems and chemical processes like plastics production.

CMC Machinery

Private Equity Round in 2021
CMC Machinery, established in 1980, specializes in designing, manufacturing, and supporting advanced machinery for the mailing, graphic arts, e-commerce, and logistics industries. The company focuses on retaining customers by serving as their sole supplier for technology, service, parts, and professional training. CMC responds promptly to market changes through creative engineering and customized solutions. Notably, it offers the award-winning CMC 3D right-sizing packaging technology, helping retailers and logistics companies optimize fulfillment processes while promoting sustainability.

Redwood Materials

Series C in 2021
Founded by JB Straubel in Nevada, Redwood Materials specializes in recycling lithium-ion batteries and electronics. It develops processes to extract and refine key materials like lithium, nickel, cobalt, and copper, creating a circular supply chain for electric vehicles and energy storage systems. The company aims to reduce environmental impact and lower production costs by recycling end-of-life products.

Rivian

Private Equity Round in 2021
Rivian Automotive, LLC is an automotive technology company that specializes in the development and manufacturing of electric adventure vehicles. Founded in 2009 by Robert J. Scaringe, the company is headquartered in Plymouth, Michigan, with additional facilities across multiple locations, including California, Illinois, the United Kingdom, and Canada. Rivian's primary offerings include the R1T, a five-passenger electric pickup truck, and the R1S, a seven-passenger electric sport utility vehicle. The company aims to advance sustainable mobility by creating innovative electric vehicles that redefine traditional automotive economics while providing a comfortable and eco-friendly driving experience.

ION Energy

Seed Round in 2021
ION Energy, Inc. is a manufacturer of energy storage systems based in Bayside, New York. The company produces batteries designed for scooters and homes, along with battery management systems that enhance the performance and reliability of these energy solutions. ION Energy also offers a battery analytics and diagnostic platform known as RIFT, which utilizes advanced analytics and artificial intelligence to support electric vehicle and energy storage providers. This technology enables organizations to make informed decisions quickly, providing them with the flexibility to either deploy ready-to-use battery management systems or develop custom solutions tailored to their specific needs. ION Energy has positioned itself as a key partner for original equipment manufacturers and battery pack manufacturers seeking innovative battery technology.

ZeroAvia

Venture Round in 2021
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.

Beta Technologies

Series A in 2021
Beta Technologies designs and develops electric aircraft and related systems, including propulsion, energy storage, and flight control technologies, with a focus on clean aviation. It builds integrated solutions to enable scalable electric flight, including charging infrastructure and pilot training tools for cargo, medical, passenger, and defense applications, and supports a self-sufficient eVTOL ecosystem that aims to improve access to vertical mobility for logistics and healthcare transport.

Turntide Technologies

Venture Round in 2021
Turntide Technologies specializes in sustainable technologies that reduce energy consumption and operating costs in buildings, agriculture, and electric transport. It has developed an efficient electric motor system based on switched reluctance technology, managed by cloud software and connected to precise controls via IoT. The company aims to eliminate the roughly 25% of global electricity wasted by legacy motors, accelerating the transition from fossil fuels toward renewable energy. Founded in 2013 and headquartered in Sunnyvale, California, Turntide's solutions target improvements in space conditioning, maintenance, and refrigeration energy use.

Infinium

Venture Round in 2021
Infinium produces synthetic fuels from renewable energy and waste carbon dioxide, offering a lower-carbon alternative for transportation systems and chemical processes like plastics production.

Rivian

Private Equity Round in 2021
Rivian Automotive, LLC is an automotive technology company that specializes in the development and manufacturing of electric adventure vehicles. Founded in 2009 by Robert J. Scaringe, the company is headquartered in Plymouth, Michigan, with additional facilities across multiple locations, including California, Illinois, the United Kingdom, and Canada. Rivian's primary offerings include the R1T, a five-passenger electric pickup truck, and the R1S, a seven-passenger electric sport utility vehicle. The company aims to advance sustainable mobility by creating innovative electric vehicles that redefine traditional automotive economics while providing a comfortable and eco-friendly driving experience.

ZeroAvia

Series A in 2020
Founded in 2017, ZeroAvia develops zero-emission aircraft propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable hydrogen-electric technologies that can retrofit existing aircraft and support sustainable aviation.

Turntide Technologies

Venture Round in 2020
Turntide Technologies specializes in sustainable technologies that reduce energy consumption and operating costs in buildings, agriculture, and electric transport. It has developed an efficient electric motor system based on switched reluctance technology, managed by cloud software and connected to precise controls via IoT. The company aims to eliminate the roughly 25% of global electricity wasted by legacy motors, accelerating the transition from fossil fuels toward renewable energy. Founded in 2013 and headquartered in Sunnyvale, California, Turntide's solutions target improvements in space conditioning, maintenance, and refrigeration energy use.

Redwood Materials

Funding Round in 2020
Founded by JB Straubel in Nevada, Redwood Materials specializes in recycling lithium-ion batteries and electronics. It develops processes to extract and refine key materials like lithium, nickel, cobalt, and copper, creating a circular supply chain for electric vehicles and energy storage systems. The company aims to reduce environmental impact and lower production costs by recycling end-of-life products.

CarbonCure

Venture Round in 2020
CarbonCure Technologies Inc. is a Canadian company that specializes in technology designed to sequester carbon dioxide (CO2) in concrete production. Founded in 2007 and headquartered in Dartmouth, Nova Scotia, the company provides a retrofit solution for existing concrete plants, allowing producers to incorporate waste CO2 from industrial emitters into their concrete products. During manufacturing, this CO2 is chemically converted into solid mineral carbonates, enhancing the strength of the concrete while reducing its carbon footprint. CarbonCure's innovative approach enables concrete manufacturers to produce green concrete without compromising quality or cost, thereby facilitating a shift towards sustainable building practices. The company also offers marketing and environmental reporting services to support its customers in the growing green building market. By licensing its technology at a low capital expenditure, CarbonCure generates a recurring revenue stream while contributing to the reduction of greenhouse gas emissions in the concrete industry.
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