ARPA-E

GE Vernova is an energy business company. They provide digital, energy consulting, energy financial services, gas power, grid solutions, nuclear energy, power conversion, renewable energy, steam power, and so on.

Founded in 2013, Iontra specializes in energy storage solutions. It develops charge control technology for lithium-ion batteries, enhancing their performance, safety, and lifespan. This contributes to a more sustainable energy future by supporting the growing demand for electrification.

Equatic develops and deploys electrolysis-based technology that uses seawater to remove atmospheric CO2 at scale. The process stabilizes CO2 permanently as dissolved bicarbonate in seawater and as solid mineral carbonates, enabling long-term storage and potential revenue from co-produced green fuels. The company designs, builds, and operates carbon removal facilities globally and collaborates with partners to implement seawater electrolysis systems for large-scale decarbonization.

CarbonBridge develops advanced bioreactors that enhance microbe productivity by over 400%. The company aims to produce ultra-low carbon methanol using intermittent power sources, supported by ARPA-E. Its headquarters are in San Jose, with research and development facilities in Harlem, New York.

Antora Energy specializes in delivering reliable, zero-carbon industrial heat and power solutions to heavy industries. The company's core technology involves thermal energy storage that absorbs excess solar and wind electricity, converting it into usable heat for industrial processes.

Opcondys develops semiconductor devices for power electronics, focusing on the opticondistor optical switching device for grid control and fault detection. The company markets Opticondistor for grid-tied energy storage, traction drives, high-voltage power supplies, HVDC and flexible AC transmission system equipment used in grid modernization. It serves the energy sector and manufacturers of high-voltage equipment. Founded in 2014 and headquartered in Manteca, California, Opcondys leverages wide-bandgap materials to deliver faster operation, broader temperature tolerance, and higher power handling, enabling equipment that is smaller, lighter, and more energy efficient, reducing system costs and energy use.

Equatic develops and deploys electrolysis-based technology that uses seawater to remove atmospheric CO2 at scale. The process stabilizes CO2 permanently as dissolved bicarbonate in seawater and as solid mineral carbonates, enabling long-term storage and potential revenue from co-produced green fuels. The company designs, builds, and operates carbon removal facilities globally and collaborates with partners to implement seawater electrolysis systems for large-scale decarbonization.

Founded in 2011, Solid Power develops solid-state rechargeable batteries for electric vehicles and portable electronics. Its batteries contain no volatile or flammable liquid components, offering high energy density, ultimate safety, and reliability.

24M Technologies specializes in energy storage systems for grid and transportation applications. It offers innovative binder-free semisolid electrodes and unit cells, eliminating the need for traditional hydro or pyrometallurgical processes in battery recycling.

South 8 Technologies, Inc. is a San Diego-based company that specializes in the development and manufacturing of lithium batteries and electrochemical capacitors utilizing an innovative liquefied gas electrolyte known as LiGas. Founded in 2015, South 8's LiGas technology addresses critical safety concerns associated with traditional lithium-ion batteries, effectively reducing fire risk and enabling operation across a wide temperature range of -60 to 60 °C. The LiGas electrolyte enhances energy density, supports fast charging, and is compatible with existing battery materials, making it a cost-effective solution for manufacturers. South 8's battery products, including the Arctic LiGas 18650 cell, cater to a diverse array of applications, including electric vehicles, energy storage, and sectors such as aerospace and defense. The company holds 23 patents in multiple jurisdictions, reflecting its commitment to innovation and advancing the capabilities of battery technology.

Founded in 2013, Quidnet Energy develops grid-scale energy storage systems using a unique hydroelectric technology. The company stores excess renewable energy by pumping water under pressure into underground geological reservoirs and releases it to drive hydroelectric turbines when needed. This process enables seamless integration with existing electricity-generating facilities at a lower cost than lithium-ion batteries.

Deep Isolation develops innovative nuclear waste disposal solutions. Its proprietary method involves creating horizontal drill hole repositories deep underground in suitable rock formations for safe storage of spent nuclear fuel and high-level radioactive waste. Headquartered in Berkeley, California with offices in London and sales offices globally, the company combines scientific expertise with stakeholder engagement to deliver equitable and environmentally protective solutions.

Power to Hydrogen is a company developing hydrogen production technology using AEM-based electrolysis. The system produces high-pressure hydrogen from renewable energy with lower-cost materials, reducing stack costs by utilizing a hybrid liquid alkaline anion exchange membrane design that avoids expensive metals. The technology integrates with variable renewables and can also produce high-pressure oxygen and operate reversibly to generate electricity, creating additional revenue streams. It aims to lower the total cost of hydrogen to around $1 per kilogram and supports clean transportation, energy storage, and industrial decarbonization. Applicable to transportation and energy sectors, the technology enables sustainability goals through low-cost, high-pressure hydrogen production and potential co-produced oxygen and energy services.

Deep Isolation develops innovative nuclear waste disposal solutions. Its proprietary method involves creating horizontal drill hole repositories deep underground in suitable rock formations for safe storage of spent nuclear fuel and high-level radioactive waste. Headquartered in Berkeley, California with offices in London and sales offices globally, the company combines scientific expertise with stakeholder engagement to deliver equitable and environmentally protective solutions.

Dimensional Energy is a chemistry company specializing in artificial photosynthesis. It aims to produce eco-friendly polymers and chemical intermediaries by efficiently harnessing sunlight using scalable reactors and innovative catalysts.

OCOchem develops electrochemical technology that converts carbon dioxide into formic acid, a green platform chemical and liquid hydrogen carrier.

Moltex Energy specializes in developing molten salt reactors that generate carbon-free electricity while recycling nuclear waste. Their innovative Stable Salt Reactor - Wasteburner (SSR-W) offers low upfront costs, reliable power output of 300-500 MWe per reactor, and inherent safety features suitable for various communities. Moltex's WAste To Stable Salt (WATSS) process enables fuel recycling from nuclear waste, minimizing environmental impact. Additionally, their GridReserve technology allows energy storage as heat for dispatch during peak demand, complementing intermittent renewable sources.

W7Energy is producing and innovating the highest performing hydroxide exchange membrane for a variety of applications.

Moltex Energy specializes in developing molten salt reactors that generate carbon-free electricity while recycling nuclear waste. Their innovative Stable Salt Reactor - Wasteburner (SSR-W) offers low upfront costs, reliable power output of 300-500 MWe per reactor, and inherent safety features suitable for various communities. Moltex's WAste To Stable Salt (WATSS) process enables fuel recycling from nuclear waste, minimizing environmental impact. Additionally, their GridReserve technology allows energy storage as heat for dispatch during peak demand, complementing intermittent renewable sources.

Starfire Energy is a company focused on developing and deploying sustainable energy technologies, specializing in the production of carbon-free ammonia. Founded in 2007 and headquartered in Aurora, Colorado, Starfire Energy has created modular systems that synthesize ammonia from renewable energy sources, specifically wind and solar power. These modular plants are built in shipping containers that are pre-wired and pre-plumbed, facilitating easy on-site installation. The ammonia produced is not only used as a fertilizer and refrigerant but also serves as an energy-dense liquid fuel. By utilizing renewable energy, air, and water as inputs, Starfire Energy aims to meet the growing demands for energy storage and transportation while contributing to carbon-free industrial processes.

Form Energy, Inc. is a company focused on developing long-duration energy storage systems aimed at transforming the electric grid by enabling the reliable use of renewable energy sources such as wind and solar. Established in 2017 and based in Somerville, Massachusetts, Form Energy is known for its innovative iron-air battery technology, which allows for the storage of electricity over extended periods, making renewable energy more dispatchable throughout the year. This technology not only helps to replace conventional fossil fuel-based generation but also enhances transmission capacity without the need for new infrastructure. By facilitating deep decarbonization of the electric system, Form Energy plays a significant role in reducing carbon emissions and promoting a sustainable energy future.

Liminal, formerly known as Feasible, Inc., specializes in battery analytics through its innovative EchoStat platform, which utilizes ultrasound waves to assess the physical properties of batteries. By sending ultrasonic pulses through a battery and analyzing the resulting echoes, Liminal can detect differentials within individual cells, across multiple cells, and even between production lines. This technology allows for real-time insights into the electrical, thermal, and mechanical conditions of battery components, making it particularly valuable for industries such as automotive, residential storage, grid storage, and consumer electronics. Founded in 2015 and headquartered in Emeryville, California, Liminal is positioned to enhance battery performance and reliability through its advanced screening and analytics capabilities.

Founded in 2012, Sunfolding designs, manufactures, and sells advanced solar tracker systems. Its flagship product, T29 Horizontal Single Axis Tracker, features AirDrive technology for enhanced reliability and performance. The company serves the U.S. solar market with a team of industry veterans.

Aspen Aerogels, Inc. is a leading company in the aerogel technology sector, specializing in the design, development, manufacture, and sale of high-performance insulation products. Founded in 2001 and headquartered in Northborough, Massachusetts, the company primarily serves the energy infrastructure and building materials markets globally. Its product lineup includes Pyrogel XTE, Pyrogel HPS, and Cryogel Z, which are tailored for various applications, including power generation and cryogenic systems. Aspen Aerogels also offers solutions like Spaceloft, designed for both offshore oil production and building materials. The company's insulation solutions are recognized for their superior thermal efficiency, often outperforming traditional materials by up to eight times. Additionally, Aspen Aerogels engages in research and development activities, collaborating with U.S. government agencies and other institutions to advance aerogel technology.

Starfire Energy is a company focused on developing and deploying sustainable energy technologies, specializing in the production of carbon-free ammonia. Founded in 2007 and headquartered in Aurora, Colorado, Starfire Energy has created modular systems that synthesize ammonia from renewable energy sources, specifically wind and solar power. These modular plants are built in shipping containers that are pre-wired and pre-plumbed, facilitating easy on-site installation. The ammonia produced is not only used as a fertilizer and refrigerant but also serves as an energy-dense liquid fuel. By utilizing renewable energy, air, and water as inputs, Starfire Energy aims to meet the growing demands for energy storage and transportation while contributing to carbon-free industrial processes.

Founded in 2009, Primus Power designs and manufactures electrical energy storage systems. Its core product is EnergyPod, a flow battery system offering scalable capacity from 25kW to 25MW for stationary grid-scale applications. With a lifespan of up to 20 years, these safe and low-maintenance zinc-bromine batteries serve commercial, industrial, data center, microgrid, and utility customers worldwide.

Enzinc is an innovative company developing advanced rechargeable zinc-air batteries. Utilizing proprietary nano-sponge technology, Enzinc's batteries offer high energy density akin to lithium-ion batteries but at a cost comparable to lead acid batteries, making them safer and more affordable.

ReVolt Technology is a technology company, which is developing a rechargeable zinc-air battery. ReVolt's batteries may enable more high-power consumer devices, electric vehicles and renewable energy storage. The technology is a result of six years of intense research and development at SINTEF (the largest independent research institute in Scandinavia). Research on material combinations has solved issues historically related to the metal-air technology; power, lifetime and rechargeability.

Founded in 2009, Primus Power designs and manufactures electrical energy storage systems. Its core product is EnergyPod, a flow battery system offering scalable capacity from 25kW to 25MW for stationary grid-scale applications. With a lifespan of up to 20 years, these safe and low-maintenance zinc-bromine batteries serve commercial, industrial, data center, microgrid, and utility customers worldwide.