HAX

HAX is a venture capital program focused on accelerating hardware startups through its comprehensive support and resources. Founded in 2012 and headquartered in Newark, New Jersey, HAX operates in two key locations, San Francisco and Shenzhen, providing founders with an environment conducive to rapid prototyping and iterative development. The program emphasizes the importance of launching both B2C and B2B hardware startups, guiding them through critical phases such as business development, fundraising, and market entry. HAX accepts teams that demonstrate strong potential for scaling their ventures and solving significant technological challenges. Through a structured curriculum, entrepreneurs refine their product-market fit and business strategies while benefiting from a robust network of mentors and industry connections. HAX maintains an ongoing relationship with participating startups to support their growth beyond the initial program, ensuring they have the necessary resources and partnerships to succeed in the competitive marketplace.

Andrew Gollach

Principal

Duncan Turner

Managing Director

Past deals in Energy Storage

Kfobix

Seed Round in 2025
Kfobix is a technology company specializing in the development and application of advanced nanocomposite coatings for enhancing the durability and efficiency of energy infrastructure. The company's flagship product is a patented superhydrophobic coating, designed to prevent ice formation and water accumulation on surfaces such as wind turbine blades and power lines. This coating, applied via a simple spray method, offers high transparency, long-lasting durability, and ease of application, thereby reducing maintenance costs and operational disruptions in the energy sector. Additionally, Kfobix is pioneering anti-dirt coatings for solar panels, aiming to maximize their efficiency and output. The company's mission is to facilitate a seamless transition to renewable energy sources by providing practical solutions to pressing challenges in the sector, ultimately promoting a cleaner, more reliable, and sustainable energy future.

XFuel

Series A in 2025
XFuel is a company that specializes in producing sustainable and net-zero drop-in fuels for road, marine, and aviation applications. Founded in 2010 and headquartered in Dublin, Ireland, with a presence in Palma de Mallorca, Spain, XFuel has developed innovative technology for the efficient and cost-effective conversion of biomass waste into low-carbon fuels. The company’s advanced fuels generate up to 85% fewer greenhouse gas emissions compared to conventional fossil fuel production, positioning them as a cleaner alternative in the transport sector. By providing decentralized and sustainable fuel solutions, XFuel aims to support distributors and consumers globally in reducing reliance on fossil fuels while working towards carbon-neutral and even carbon-negative fuel options.

Benerg

Seed Round in 2024
Benerg is an IoT technology company that designs and develops large-scale biogas systems. These systems convert food waste into energy with high efficiency, enabling businesses to manage their energy resources sustainably while reducing waste. The company specializes in scalable biogas machines and grid-independent operation, also producing organic fertilizer as a byproduct.

XEra Energy

Seed Round in 2024
Xera Energy is a chemical manufacturing company specializing in the production of materials for lithium-ion batteries. The company's core focus is the development of advanced cathode and cathode intermediate materials, utilizing innovative hydro-separation and purification processes. By reclaiming critical minerals from spent batteries and ore concentrates, Xera Energy aims to support the electric vehicle and energy storage industries, offering cost-effective, high-quality solutions that promote sustainability.

Renewell

Seed Round in 2024
Renewell is a company based in Bakersfield, California, that transforms inactive oil and gas wells into gravity-based energy storage systems. This innovative process involves lowering a weight connected to a regenerative winch down a repurposed wellbore, allowing for the storage of energy during periods of low demand and the release of electricity back to the grid when demand increases. By utilizing existing oil and gas infrastructure, Renewell aims to create a flexible and cost-effective energy storage network while significantly reducing greenhouse gas emissions. The company's technology focuses on zero-self-discharge renewable energy storage, contributing to a more sustainable energy future.

Navion Energy

Seed Round in 2024
Navion Energy focuses on developing and manufacturing portable energy storage solutions that leverage sodium-ion technology. This innovative approach aims to deliver sustainable and efficient energy storage, enabling various industries to adopt cleaner energy practices and enhance energy efficiency while minimizing environmental impact.

Metal Light

Convertible Note in 2024
Metal Light is a clean technology company focused on creating a power-generating platform that utilizes innovative metal-air technology. This system serves as a drop-in replacement for traditional diesel generators, offering a reliable source of electricity while being emission-free at the point of use. The company's approach ensures a lower carbon impact throughout the product's lifecycle, enabling portable energy generation, residential power backup, and off-grid solutions. By providing access to clean and durable lighting at an affordable price, Metal Light aims to meet the growing global demand for sustainable energy alternatives.

HidrogeniCs

Seed Round in 2024
Hidrogenics is a clean energy company specializing in methane pyrolysis technology. It converts methane into clean hydrogen and solid carbon products, such as synthetic graphite, carbon nanotubes, and graphene. The company's process uses multi-metal catalysts to decompose methane, supporting industries in their decarbonization efforts and the transition to green energy.

XFuel

Seed Round in 2024
XFuel is a company that specializes in producing sustainable and net-zero drop-in fuels for road, marine, and aviation applications. Founded in 2010 and headquartered in Dublin, Ireland, with a presence in Palma de Mallorca, Spain, XFuel has developed innovative technology for the efficient and cost-effective conversion of biomass waste into low-carbon fuels. The company’s advanced fuels generate up to 85% fewer greenhouse gas emissions compared to conventional fossil fuel production, positioning them as a cleaner alternative in the transport sector. By providing decentralized and sustainable fuel solutions, XFuel aims to support distributors and consumers globally in reducing reliance on fossil fuels while working towards carbon-neutral and even carbon-negative fuel options.

Qnetic

Seed Round in 2023
Qnetic is a developer of innovative flywheel energy storage technology aimed at enhancing bulk energy storage capabilities for electric grids. The company's solutions focus on providing low-cost energy storage options that facilitate the transition to renewable energy sources, particularly wind and solar power. By enabling efficient energy storage, Qnetic's technology helps reduce reliance on fossil fuels, supporting clients in their efforts to adopt sustainable energy practices. The company's advancements in energy storage are instrumental in promoting the wider deployment of renewable energy solutions.

Altiro Energy

Seed Round in 2023
Altiro Energy is a renewable energy power generation company that specializes in cleantech renewable power systems. The company has developed an innovative energy storage technology aimed at providing long-term energy storage solutions with zero emissions. Utilizing an iron-based powder, Altiro Energy's technology allows for efficient cycling through charging and discharging processes. This capability is particularly beneficial for wind and solar farms, as it helps stabilize energy production and minimizes waste when energy supply exceeds demand. Through its focus on cost competitiveness and safety, Altiro Energy contributes to the advancement of sustainable energy solutions.

DiviGas

Convertible Note in 2023
DiviGas is an oil and gas company founded in 2019 and headquartered in Central Region, Singapore. The company specializes in the development of advanced hydrogen separation membranes designed for hydrogen purification and gas separation. These membranes exhibit high resistance to heat, pressure, acidity, and plasticity, offering superior performance compared to traditional solutions. Additionally, DiviGas's technology can be integrated with carbon capture and storage systems to facilitate carbon dioxide separation. This innovative approach enables clients to purify hydrogen efficiently and at a lower cost while employing environmentally friendly methods.

Mitico

Seed Round in 2023
Mitico specializes in advanced carbon capture solutions, utilizing a patented granulated metal carbonate sorption technology developed at Caltech. This innovative approach effectively captures over 95% of carbon dioxide emissions from post-combustion sources, such as gas-fired power plants, boilers, and waste-to-energy facilities. By providing carbon capture, utilization, and storage (CCUS) as a service, Mitico enables clients to significantly reduce their carbon emissions at a lower cost compared to conventional methods. The company's technology aims to facilitate mass mitigation of carbon emissions, making it an essential partner for industries seeking to address environmental challenges and transition towards more sustainable practices.

Renewell

Seed Round in 2023
Renewell is a company based in Bakersfield, California, that transforms inactive oil and gas wells into gravity-based energy storage systems. This innovative process involves lowering a weight connected to a regenerative winch down a repurposed wellbore, allowing for the storage of energy during periods of low demand and the release of electricity back to the grid when demand increases. By utilizing existing oil and gas infrastructure, Renewell aims to create a flexible and cost-effective energy storage network while significantly reducing greenhouse gas emissions. The company's technology focuses on zero-self-discharge renewable energy storage, contributing to a more sustainable energy future.

Material

Pre Seed Round in 2023
At Material, our mission is to revolutionize battery technology and 3D printing capabilities. We strive to surpass current lithium-ion battery standards by innovating and 3D printing batteries that exceed expectations while pioneering sodium-ion and solid-state electrolyte chemistries. Embracing free-form factor 3D printing, we aim to unleash the full potential of battery design.

Ayrton Energy

Seed Round in 2023
Ayrton Energy, founded in 2021, focuses on enhancing energy security through innovative hydrogen storage technology. The company has developed a system that allows hydrogen to be stored in liquid form, providing a dense storage medium that can be safely handled and transported. This technology enables hydrogen to be delivered through existing infrastructures such as tanks, rail cars, transport trucks, and pipelines. By facilitating efficient storage and transportation of hydrogen, Ayrton Energy aims to support power generation and contribute to a more secure energy future.

Tandem

Seed Round in 2022
Tandem is a company focused on providing electrification solutions for heavy-duty vehicles, specifically through its innovative instant hybrid electric refrigerated trailer. The company's approach aims to eliminate the upfront costs and risks typically associated with electric drivetrains, facilitating a smoother transition to sustainable practices within the supply chain. With offices located in New York and Florida, Tandem is dedicated to advancing the future of electrification and sustainability in the transportation industry.

Solano Energy

Pre Seed Round in 2022
Solano Energy is an innovative power company established by a team of engineers from Oxford and Cambridge. The company focuses on making renewable energy accessible to all by developing smart solar energy equipment that automatically generates, stores, and distributes energy. Solano Energy aims to address the challenges associated with creating a renewable energy-capable network without the need for significant upfront capital expenditures. Through its technology, the company enables consumers to adopt a sustainable lifestyle by providing affordable and efficient renewable energy solutions.

Metal Light

Seed Round in 2022
Metal Light is a clean technology company focused on creating a power-generating platform that utilizes innovative metal-air technology. This system serves as a drop-in replacement for traditional diesel generators, offering a reliable source of electricity while being emission-free at the point of use. The company's approach ensures a lower carbon impact throughout the product's lifecycle, enabling portable energy generation, residential power backup, and off-grid solutions. By providing access to clean and durable lighting at an affordable price, Metal Light aims to meet the growing global demand for sustainable energy alternatives.

Renewell

Seed Round in 2022
Renewell is a company based in Bakersfield, California, that transforms inactive oil and gas wells into gravity-based energy storage systems. This innovative process involves lowering a weight connected to a regenerative winch down a repurposed wellbore, allowing for the storage of energy during periods of low demand and the release of electricity back to the grid when demand increases. By utilizing existing oil and gas infrastructure, Renewell aims to create a flexible and cost-effective energy storage network while significantly reducing greenhouse gas emissions. The company's technology focuses on zero-self-discharge renewable energy storage, contributing to a more sustainable energy future.

Renewell

Seed Round in 2022
Renewell is a company based in Bakersfield, California, that transforms inactive oil and gas wells into gravity-based energy storage systems. This innovative process involves lowering a weight connected to a regenerative winch down a repurposed wellbore, allowing for the storage of energy during periods of low demand and the release of electricity back to the grid when demand increases. By utilizing existing oil and gas infrastructure, Renewell aims to create a flexible and cost-effective energy storage network while significantly reducing greenhouse gas emissions. The company's technology focuses on zero-self-discharge renewable energy storage, contributing to a more sustainable energy future.

SunGreenH2

Seed Round in 2022
SunGreenH2 is a company focused on producing green hydrogen through advanced nanotechnology and proprietary electrolysis systems. Founded in 2020 and headquartered in Singapore, with additional offices in Melbourne and London, the company has developed a modular and scalable electrolyser stack that enables efficient on-site hydrogen production using only sunlight and water. This innovative approach results in zero emissions and significantly reduces costs, facilitating the widespread adoption of green hydrogen across various sectors, including transportation, energy storage, and specialty chemicals. With over a decade of research in electrochemistry and nanotechnology, SunGreenH2 aims to unlock sustainable and scalable hydrogen solutions for industries worldwide.

XFuel

Venture Round in 2022
XFuel is a company that specializes in producing sustainable and net-zero drop-in fuels for road, marine, and aviation applications. Founded in 2010 and headquartered in Dublin, Ireland, with a presence in Palma de Mallorca, Spain, XFuel has developed innovative technology for the efficient and cost-effective conversion of biomass waste into low-carbon fuels. The company’s advanced fuels generate up to 85% fewer greenhouse gas emissions compared to conventional fossil fuel production, positioning them as a cleaner alternative in the transport sector. By providing decentralized and sustainable fuel solutions, XFuel aims to support distributors and consumers globally in reducing reliance on fossil fuels while working towards carbon-neutral and even carbon-negative fuel options.

Wild.

Seed Round in 2022
Wild is a stealth startup based in Santa Monica, California, focused on developing energy-efficient batteries for electric vehicles. Founded in 2020, the company is dedicated to innovating in the battery sector, aiming to enhance the performance and sustainability of electric vehicle technology. Operating in stealth mode, Wild is working on advanced solutions to meet the growing demand for efficient energy storage in the automotive industry.

Wild.

Convertible Note in 2022
Wild is a stealth startup based in Santa Monica, California, focused on developing energy-efficient batteries for electric vehicles. Founded in 2020, the company is dedicated to innovating in the battery sector, aiming to enhance the performance and sustainability of electric vehicle technology. Operating in stealth mode, Wild is working on advanced solutions to meet the growing demand for efficient energy storage in the automotive industry.

SunGreenH2

Seed Round in 2022
SunGreenH2 is a company focused on producing green hydrogen through advanced nanotechnology and proprietary electrolysis systems. Founded in 2020 and headquartered in Singapore, with additional offices in Melbourne and London, the company has developed a modular and scalable electrolyser stack that enables efficient on-site hydrogen production using only sunlight and water. This innovative approach results in zero emissions and significantly reduces costs, facilitating the widespread adoption of green hydrogen across various sectors, including transportation, energy storage, and specialty chemicals. With over a decade of research in electrochemistry and nanotechnology, SunGreenH2 aims to unlock sustainable and scalable hydrogen solutions for industries worldwide.

DiviGas

Seed Round in 2021
DiviGas is an oil and gas company founded in 2019 and headquartered in Central Region, Singapore. The company specializes in the development of advanced hydrogen separation membranes designed for hydrogen purification and gas separation. These membranes exhibit high resistance to heat, pressure, acidity, and plasticity, offering superior performance compared to traditional solutions. Additionally, DiviGas's technology can be integrated with carbon capture and storage systems to facilitate carbon dioxide separation. This innovative approach enables clients to purify hydrogen efficiently and at a lower cost while employing environmentally friendly methods.

SunGreenH2

Seed Round in 2021
SunGreenH2 is a company focused on producing green hydrogen through advanced nanotechnology and proprietary electrolysis systems. Founded in 2020 and headquartered in Singapore, with additional offices in Melbourne and London, the company has developed a modular and scalable electrolyser stack that enables efficient on-site hydrogen production using only sunlight and water. This innovative approach results in zero emissions and significantly reduces costs, facilitating the widespread adoption of green hydrogen across various sectors, including transportation, energy storage, and specialty chemicals. With over a decade of research in electrochemistry and nanotechnology, SunGreenH2 aims to unlock sustainable and scalable hydrogen solutions for industries worldwide.

DiviGas

Convertible Note in 2020
DiviGas is an oil and gas company founded in 2019 and headquartered in Central Region, Singapore. The company specializes in the development of advanced hydrogen separation membranes designed for hydrogen purification and gas separation. These membranes exhibit high resistance to heat, pressure, acidity, and plasticity, offering superior performance compared to traditional solutions. Additionally, DiviGas's technology can be integrated with carbon capture and storage systems to facilitate carbon dioxide separation. This innovative approach enables clients to purify hydrogen efficiently and at a lower cost while employing environmentally friendly methods.

VoltStorage

Convertible Note in 2020
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

Pushme

Convertible Note in 2019
Pushme Inc. is a manufacturer of swappable batteries specifically designed for bicycles, aiming to enhance urban mobility. Founded in 2016 and based in Bath, United Kingdom, the company operates as a subsidiary of Tier Mobility GmbH. Pushme focuses on addressing the challenges of energy distribution for small electric vehicles by establishing a network of battery swap stations. These stations allow local merchants to sell energy, providing convenient and instant recharging solutions across cities. The innovative approach not only supports the adoption of electric bicycles but also empowers individuals with access to electricity to contribute to sustainable transport. The team at Pushme comprises engineers, designers, and operations experts dedicated to developing efficient hardware solutions that improve cycling experiences and facilitate energy management.

Pushme

Seed Round in 2019
Pushme Inc. is a manufacturer of swappable batteries specifically designed for bicycles, aiming to enhance urban mobility. Founded in 2016 and based in Bath, United Kingdom, the company operates as a subsidiary of Tier Mobility GmbH. Pushme focuses on addressing the challenges of energy distribution for small electric vehicles by establishing a network of battery swap stations. These stations allow local merchants to sell energy, providing convenient and instant recharging solutions across cities. The innovative approach not only supports the adoption of electric bicycles but also empowers individuals with access to electricity to contribute to sustainable transport. The team at Pushme comprises engineers, designers, and operations experts dedicated to developing efficient hardware solutions that improve cycling experiences and facilitate energy management.

VoltStorage

Seed Round in 2018
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

Pushme

Seed Round in 2018
Pushme Inc. is a manufacturer of swappable batteries specifically designed for bicycles, aiming to enhance urban mobility. Founded in 2016 and based in Bath, United Kingdom, the company operates as a subsidiary of Tier Mobility GmbH. Pushme focuses on addressing the challenges of energy distribution for small electric vehicles by establishing a network of battery swap stations. These stations allow local merchants to sell energy, providing convenient and instant recharging solutions across cities. The innovative approach not only supports the adoption of electric bicycles but also empowers individuals with access to electricity to contribute to sustainable transport. The team at Pushme comprises engineers, designers, and operations experts dedicated to developing efficient hardware solutions that improve cycling experiences and facilitate energy management.

Pushme

Convertible Note in 2018
Pushme Inc. is a manufacturer of swappable batteries specifically designed for bicycles, aiming to enhance urban mobility. Founded in 2016 and based in Bath, United Kingdom, the company operates as a subsidiary of Tier Mobility GmbH. Pushme focuses on addressing the challenges of energy distribution for small electric vehicles by establishing a network of battery swap stations. These stations allow local merchants to sell energy, providing convenient and instant recharging solutions across cities. The innovative approach not only supports the adoption of electric bicycles but also empowers individuals with access to electricity to contribute to sustainable transport. The team at Pushme comprises engineers, designers, and operations experts dedicated to developing efficient hardware solutions that improve cycling experiences and facilitate energy management.

Pushme

Seed Round in 2018
Pushme Inc. is a manufacturer of swappable batteries specifically designed for bicycles, aiming to enhance urban mobility. Founded in 2016 and based in Bath, United Kingdom, the company operates as a subsidiary of Tier Mobility GmbH. Pushme focuses on addressing the challenges of energy distribution for small electric vehicles by establishing a network of battery swap stations. These stations allow local merchants to sell energy, providing convenient and instant recharging solutions across cities. The innovative approach not only supports the adoption of electric bicycles but also empowers individuals with access to electricity to contribute to sustainable transport. The team at Pushme comprises engineers, designers, and operations experts dedicated to developing efficient hardware solutions that improve cycling experiences and facilitate energy management.

VoltStorage

Seed Round in 2016
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

VoltStorage

Convertible Note in 2016
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

VoltStorage

Seed Round in 2016
VoltStorage GmbH, based in Olching, Germany, specializes in developing and producing power storage devices that utilize eco-friendly redox flow technology. The company's flagship product, VoltStorage, is a vanadium redox flow battery system designed to store excess electricity generated by solar panels during the day for use at night. This innovative approach enables homeowners to access renewable energy around the clock, promoting sustainability and environmental responsibility. In addition to its products, VoltStorage offers installation and technical support services, ensuring customers can effectively integrate these systems into their homes. The company aims to make renewable energy more accessible and contribute to a cleaner, fairer world for future generations.

Everpurse

Seed Round in 2014
Everpurse, Inc. designs and sells innovative SmartPocket bags that provide wireless charging for iPhones, allowing users to keep their devices powered while on the go. Each bag features a specially designed charging pocket that aligns with an Apple lightning connector, making it easy for customers to charge their phones simply by placing them inside the pocket. The bags come equipped with a high-power USB adapter for global compatibility, enabling users to charge the bag itself as needed. Everpurse products are available for purchase online, and the company aims to simplify the charging process, ensuring that users can stay connected throughout their day. Established in 2012 and based in Chicago, Illinois, Everpurse has positioned itself as a solution for those who rely on their smartphones but struggle with battery life.

Everpurse

Seed Round in 2013
Everpurse, Inc. designs and sells innovative SmartPocket bags that provide wireless charging for iPhones, allowing users to keep their devices powered while on the go. Each bag features a specially designed charging pocket that aligns with an Apple lightning connector, making it easy for customers to charge their phones simply by placing them inside the pocket. The bags come equipped with a high-power USB adapter for global compatibility, enabling users to charge the bag itself as needed. Everpurse products are available for purchase online, and the company aims to simplify the charging process, ensuring that users can stay connected throughout their day. Established in 2012 and based in Chicago, Illinois, Everpurse has positioned itself as a solution for those who rely on their smartphones but struggle with battery life.
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