HAX

HAX is a global venture capital-backed program dedicated to accelerating startups with a hardware element. Operating across San Francisco and Shenzhen, HAX focuses on rapid prototyping and iteration, helping teams refine their products, business plans, and launch strategies. The program culminates in market readiness support, including introductions to corporates, investors, partners, and press, as well as securing funding and gaining traction.

Andrew Gollach

Principal

Ji Ke

Partner, Program Director and CTO

Past deals in Renewables

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 addressing some of the most pressing challenges in the sector, ultimately promoting a cleaner, more reliable, and sustainable energy future.

NOC Energy

Seed Round in 2025
NOC Energy specializes in decarbonizing industrial heating processes. It offers a plug-and-play service, replacing fossil fuel burners with high-temperature gas generators, enabling clients to optimize resource use based on access, availability, and price, all while eliminating carbon emissions.

XFuel

Series A in 2025
XFuel is a company focused on producing sustainable and net-zero advanced fuels for the road, marine, and aviation sectors. Founded in 2010 and headquartered in Dublin, Ireland, with additional operations in Palma de Mallorca, Spain, XFuel has developed innovative technology for the efficient conversion of biomass waste into low-carbon fuels. This process results in a clean, drop-in fuel that can be utilized by distributors and consumers globally, offering a cost-effective alternative to traditional fossil fuels. XFuel's production methods lead to up to 85% fewer greenhouse gas emissions compared to conventional fuel production, with a clear pathway towards achieving carbon-neutral and carbon-negative fuel solutions.

Benerg

Seed Round in 2024
Benerg is an Internet of Things (IoT) technology company that specializes in developing scalable biogas systems designed to efficiently convert food and bio waste into energy. The company focuses on building biogas machines that operate independently of the grid, and it also produces organic fertilizers as a byproduct. By providing innovative solutions for energy resource management, Benerg enables businesses to reduce waste and contribute to environmental sustainability.

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 Energy

Seed Round in 2024
Renewell Energy develops gravity-based, renewable energy storage that repurposes idle oil and gas wells. The technology converts inactive wells into a low-cost, flexible storage network by lowering a weight down a repurposed wellbore to push electricity onto the grid when demand is high and raising it back up when demand is low, effectively storing energy as gravitational potential. The approach targets zero-self-discharge storage and aims to abate greenhouse gas emissions by utilizing existing oil and gas infrastructure to create a scalable energy storage solution. The company is based in Bakersfield, California.

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 developing an emission-free generator using metal-air technology. This innovative solution aims to replace diesel generators, offering a silent operation, zero emissions at the point of use, and recyclable metal fuel.

XFuel

Seed Round in 2024
XFuel is a company focused on producing sustainable and net-zero advanced fuels for the road, marine, and aviation sectors. Founded in 2010 and headquartered in Dublin, Ireland, with additional operations in Palma de Mallorca, Spain, XFuel has developed innovative technology for the efficient conversion of biomass waste into low-carbon fuels. This process results in a clean, drop-in fuel that can be utilized by distributors and consumers globally, offering a cost-effective alternative to traditional fossil fuels. XFuel's production methods lead to up to 85% fewer greenhouse gas emissions compared to conventional fuel production, with a clear pathway towards achieving carbon-neutral and carbon-negative fuel solutions.

Terra Bioindustries

Seed Round in 2024
Terra Bioindustries produces plant-based protein derived from underutilized waste materials like spent grains from beer manufacturing. This process transforms these unused parts into functional vegan protein, offering clients sustainable alternatives to soy and pea protein for use in meat and dairy replacements.

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.

CargoKite

Convertible Note in 2023
CargoKite, founded in 2022 and based in Munich, Germany, develops autonomous cargo ships that use wind-powered propulsion through high-altitude kite systems paired with routing software to reduce fuel consumption and emissions, enabling flexible, sustainable maritime logistics with micro cargo ships.

Altiro Energy

Seed Round in 2023
Altiro Energy is a renewable energy company specializing in clean technology power systems. It develops iron-based powder energy storage solutions for wind and solar farms, enabling stable production and reduced waste during periods of excess supply.

PureLi

Seed Round in 2023
PureLi is a cleantech company that boosts lithium extraction and production from brine sources.

Cool Amps

Seed Round in 2023
Cool Amps is a company specializing in lithium-ion battery recycling. It has developed a patent-pending electrochemical process that efficiently extracts and reclaims over 95% of target metals from end-of-use batteries. This method, unlike traditional shredding and smelting, does not use harsh chemicals or extreme heat, making it environmentally friendly. It also has a small footprint, allowing it to be co-located with battery manufacturers, and can directly recycle manufacturing scraps. By avoiding additional processing steps, the Cool Amps method reduces energy use and greenhouse gas emissions per kilogram of batteries produced, promoting sustainable manufacturing and reducing battery waste.

TrelliSense

Seed Round in 2023
TrelliSense specializes in precise identification and measurement of methane emissions across diverse industrial infrastructures. Its unique technology uses sunlight as a spectroscopic light source, enabling accurate detection, location, and quantification of methane leaks from oil and gas facilities, landfills, coal mines, bio-digestion plants, and agricultural operations.

Mitico

Seed Round in 2023
Mitico specializes in advanced carbon capture technology. Utilizing its patented granulated metal carbonate sorption process, developed at Caltech, Mitico removes over 95% of CO2 emissions from post-combustion sources such as gas-fired power plants and waste-to-energy facilities. This enables cost-effective carbon capture, utilization, and storage (CCUS) services.

Renewell Energy

Seed Round in 2023
Renewell Energy develops gravity-based, renewable energy storage that repurposes idle oil and gas wells. The technology converts inactive wells into a low-cost, flexible storage network by lowering a weight down a repurposed wellbore to push electricity onto the grid when demand is high and raising it back up when demand is low, effectively storing energy as gravitational potential. The approach targets zero-self-discharge storage and aims to abate greenhouse gas emissions by utilizing existing oil and gas infrastructure to create a scalable energy storage solution. The company is based in Bakersfield, California.

Ayrton Energy

Seed Round in 2023
Founded in 2021, Ayrton Energy specializes in developing hydrogen storage technology. Its innovative solution involves storing hydrogen in liquid form, facilitating safe and efficient transportation through existing infrastructures. This technology aims to provide energy security by enabling the use of hydrogen as a fuel for power generation.

Green Li-ion

Series B in 2023
Green Li-ion, established in 2020 with headquarters in Singapore, specializes in innovative battery recycling technology. The company's patented deep tech process enhances the purity of recycled materials, allowing lithium-ion batteries to be rejuvenated and reused efficiently. This unique approach addresses environmental concerns and improves profitability compared to conventional recycling methods by a factor of four.

SepPure Technologies

Series A in 2023
SepPure disrupts energy-intensive chemical separation processes like distillation. It uses novel nanofiltration membranes for sustainable separations, reducing global energy consumption, emissions, and pollution.

Solano Energy

Pre Seed Round in 2022
Solano Energy is an asset-light power company focused on making renewable energy accessible. It aims to deliver affordable renewable electricity by building a network capable of supporting low upfront capital expenditure. The company develops equipment that automatically generates, stores, and distributes solar energy, leveraging artificial intelligence to optimize performance and energy use. Founded by engineers from Oxford and Cambridge, Solano Energy emphasizes technical innovation to simplify the adoption of solar power and reduce overall power costs for consumers.

Metal Light

Seed Round in 2022
Metal Light is developing an emission-free generator using metal-air technology. This innovative solution aims to replace diesel generators, offering a silent operation, zero emissions at the point of use, and recyclable metal fuel.

Renewell Energy

Seed Round in 2022
Renewell Energy develops gravity-based, renewable energy storage that repurposes idle oil and gas wells. The technology converts inactive wells into a low-cost, flexible storage network by lowering a weight down a repurposed wellbore to push electricity onto the grid when demand is high and raising it back up when demand is low, effectively storing energy as gravitational potential. The approach targets zero-self-discharge storage and aims to abate greenhouse gas emissions by utilizing existing oil and gas infrastructure to create a scalable energy storage solution. The company is based in Bakersfield, California.

Renewell Energy

Seed Round in 2022
Renewell Energy develops gravity-based, renewable energy storage that repurposes idle oil and gas wells. The technology converts inactive wells into a low-cost, flexible storage network by lowering a weight down a repurposed wellbore to push electricity onto the grid when demand is high and raising it back up when demand is low, effectively storing energy as gravitational potential. The approach targets zero-self-discharge storage and aims to abate greenhouse gas emissions by utilizing existing oil and gas infrastructure to create a scalable energy storage solution. The company is based in Bakersfield, California.

SunGreenH2

Seed Round in 2022
Founded in 2020, SunGreenH2 specializes in developing high-performance electrolysers using nanotechnology and advanced materials. Headquartered in Singapore with offices in Melbourne and London, the company produces green hydrogen at low cost for industries, mobility, and energy storage.

XFuel

Venture Round in 2022
XFuel is a company focused on producing sustainable and net-zero advanced fuels for the road, marine, and aviation sectors. Founded in 2010 and headquartered in Dublin, Ireland, with additional operations in Palma de Mallorca, Spain, XFuel has developed innovative technology for the efficient conversion of biomass waste into low-carbon fuels. This process results in a clean, drop-in fuel that can be utilized by distributors and consumers globally, offering a cost-effective alternative to traditional fossil fuels. XFuel's production methods lead to up to 85% fewer greenhouse gas emissions compared to conventional fuel production, with a clear pathway towards achieving carbon-neutral and carbon-negative fuel solutions.

CargoKite

Seed Round in 2022
CargoKite, founded in 2022 and based in Munich, Germany, develops autonomous cargo ships that use wind-powered propulsion through high-altitude kite systems paired with routing software to reduce fuel consumption and emissions, enabling flexible, sustainable maritime logistics with micro cargo ships.

Wild Energy

Seed Round in 2022
Founded in 2020, Wild Energy is a California-based startup focused on innovative electric vehicle battery solutions.

Wild Energy

Convertible Note in 2022
Founded in 2020, Wild Energy is a California-based startup focused on innovative electric vehicle battery solutions.

Flair

Series A in 2022
Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling. The company builds smart hardware and software for HVAC controls focused on efficiency, comfort, electrification, and smart grid integration. The company's products are sold through multiple channels including direct to consumer, HVAC distribution, and utilities.

SunGreenH2

Seed Round in 2022
Founded in 2020, SunGreenH2 specializes in developing high-performance electrolysers using nanotechnology and advanced materials. Headquartered in Singapore with offices in Melbourne and London, the company produces green hydrogen at low cost for industries, mobility, and energy storage.

Windfall Bio

Seed Round in 2022
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.

SepPure Technologies

Convertible Note in 2022
SepPure disrupts energy-intensive chemical separation processes like distillation. It uses novel nanofiltration membranes for sustainable separations, reducing global energy consumption, emissions, and pollution.

Green Li-ion

Series A in 2022
Green Li-ion, established in 2020 with headquarters in Singapore, specializes in innovative battery recycling technology. The company's patented deep tech process enhances the purity of recycled materials, allowing lithium-ion batteries to be rejuvenated and reused efficiently. This unique approach addresses environmental concerns and improves profitability compared to conventional recycling methods by a factor of four.

Carbix

Non Equity Assistance in 2021
Carbix develops weathering technologies that convert CO2 emissions into building materials. It uses a bioreactor to capture CO2 from industrial plant flue gas and combines it with mineral inputs and energy from renewable sources or energy-from-waste to accelerate sequestration and form carbonates that serve as raw materials for construction products and other industrial applications.

Green Li-ion

Seed Round in 2021
Green Li-ion, established in 2020 with headquarters in Singapore, specializes in innovative battery recycling technology. The company's patented deep tech process enhances the purity of recycled materials, allowing lithium-ion batteries to be rejuvenated and reused efficiently. This unique approach addresses environmental concerns and improves profitability compared to conventional recycling methods by a factor of four.

SunGreenH2

Seed Round in 2021
Founded in 2020, SunGreenH2 specializes in developing high-performance electrolysers using nanotechnology and advanced materials. Headquartered in Singapore with offices in Melbourne and London, the company produces green hydrogen at low cost for industries, mobility, and energy storage.

VoltStorage

Convertible Note in 2020
VoltStorage GmbH is a German company specializing in the development and production of solar energy storage systems. Based in Olching, Germany, it utilizes eco-friendly vanadium redox flow technology to create power storage devices that allow homeowners to store surplus solar energy generated during the day for use at night. This innovative approach aims to provide renewable energy availability around the clock, contributing to a cleaner and fairer world for future generations. VoltStorage also offers installation and technical support services for its products, which are sold online. The company's commitment to sustainability underscores its mission to enhance the accessibility of renewable energy.

Pushme

Convertible Note in 2019
Pushme Inc., founded in 2016 and headquartered in Bath, United Kingdom, specializes in manufacturing swappable batteries for bicycles. The company aims to enhance urban mobility by addressing the challenges of charging electric vehicles, which can be cumbersome and costly. Pushme's innovative network of battery swap stations allows local merchants to sell energy, providing cyclists with instant recharging options throughout the city. This approach not only facilitates the use of small, shareable electric vehicles but also promotes a more sustainable mode of transportation. By integrating technology that enables cyclists to convert their pedaling force into electricity, Pushme empowers users to manage their energy costs effectively while reducing cycling fatigue, particularly on long or uphill routes. As a subsidiary of Tier Mobility GmbH, Pushme is part of a broader movement towards sustainable urban mobility solutions.

Pushme

Seed Round in 2019
Pushme Inc., founded in 2016 and headquartered in Bath, United Kingdom, specializes in manufacturing swappable batteries for bicycles. The company aims to enhance urban mobility by addressing the challenges of charging electric vehicles, which can be cumbersome and costly. Pushme's innovative network of battery swap stations allows local merchants to sell energy, providing cyclists with instant recharging options throughout the city. This approach not only facilitates the use of small, shareable electric vehicles but also promotes a more sustainable mode of transportation. By integrating technology that enables cyclists to convert their pedaling force into electricity, Pushme empowers users to manage their energy costs effectively while reducing cycling fatigue, particularly on long or uphill routes. As a subsidiary of Tier Mobility GmbH, Pushme is part of a broader movement towards sustainable urban mobility solutions.

Flair

Seed Round in 2019
Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling. The company builds smart hardware and software for HVAC controls focused on efficiency, comfort, electrification, and smart grid integration. The company's products are sold through multiple channels including direct to consumer, HVAC distribution, and utilities.

SepPure Technologies

Pre Seed Round in 2018
SepPure disrupts energy-intensive chemical separation processes like distillation. It uses novel nanofiltration membranes for sustainable separations, reducing global energy consumption, emissions, and pollution.

VoltStorage

Seed Round in 2018
VoltStorage GmbH is a German company specializing in the development and production of solar energy storage systems. Based in Olching, Germany, it utilizes eco-friendly vanadium redox flow technology to create power storage devices that allow homeowners to store surplus solar energy generated during the day for use at night. This innovative approach aims to provide renewable energy availability around the clock, contributing to a cleaner and fairer world for future generations. VoltStorage also offers installation and technical support services for its products, which are sold online. The company's commitment to sustainability underscores its mission to enhance the accessibility of renewable energy.

Pushme

Seed Round in 2018
Pushme Inc., founded in 2016 and headquartered in Bath, United Kingdom, specializes in manufacturing swappable batteries for bicycles. The company aims to enhance urban mobility by addressing the challenges of charging electric vehicles, which can be cumbersome and costly. Pushme's innovative network of battery swap stations allows local merchants to sell energy, providing cyclists with instant recharging options throughout the city. This approach not only facilitates the use of small, shareable electric vehicles but also promotes a more sustainable mode of transportation. By integrating technology that enables cyclists to convert their pedaling force into electricity, Pushme empowers users to manage their energy costs effectively while reducing cycling fatigue, particularly on long or uphill routes. As a subsidiary of Tier Mobility GmbH, Pushme is part of a broader movement towards sustainable urban mobility solutions.

Pushme

Convertible Note in 2018
Pushme Inc., founded in 2016 and headquartered in Bath, United Kingdom, specializes in manufacturing swappable batteries for bicycles. The company aims to enhance urban mobility by addressing the challenges of charging electric vehicles, which can be cumbersome and costly. Pushme's innovative network of battery swap stations allows local merchants to sell energy, providing cyclists with instant recharging options throughout the city. This approach not only facilitates the use of small, shareable electric vehicles but also promotes a more sustainable mode of transportation. By integrating technology that enables cyclists to convert their pedaling force into electricity, Pushme empowers users to manage their energy costs effectively while reducing cycling fatigue, particularly on long or uphill routes. As a subsidiary of Tier Mobility GmbH, Pushme is part of a broader movement towards sustainable urban mobility solutions.

Pushme

Seed Round in 2018
Pushme Inc., founded in 2016 and headquartered in Bath, United Kingdom, specializes in manufacturing swappable batteries for bicycles. The company aims to enhance urban mobility by addressing the challenges of charging electric vehicles, which can be cumbersome and costly. Pushme's innovative network of battery swap stations allows local merchants to sell energy, providing cyclists with instant recharging options throughout the city. This approach not only facilitates the use of small, shareable electric vehicles but also promotes a more sustainable mode of transportation. By integrating technology that enables cyclists to convert their pedaling force into electricity, Pushme empowers users to manage their energy costs effectively while reducing cycling fatigue, particularly on long or uphill routes. As a subsidiary of Tier Mobility GmbH, Pushme is part of a broader movement towards sustainable urban mobility solutions.

Flair

Convertible Note in 2017
Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling. The company builds smart hardware and software for HVAC controls focused on efficiency, comfort, electrification, and smart grid integration. The company's products are sold through multiple channels including direct to consumer, HVAC distribution, and utilities.

VoltStorage

Seed Round in 2016
VoltStorage GmbH is a German company specializing in the development and production of solar energy storage systems. Based in Olching, Germany, it utilizes eco-friendly vanadium redox flow technology to create power storage devices that allow homeowners to store surplus solar energy generated during the day for use at night. This innovative approach aims to provide renewable energy availability around the clock, contributing to a cleaner and fairer world for future generations. VoltStorage also offers installation and technical support services for its products, which are sold online. The company's commitment to sustainability underscores its mission to enhance the accessibility of renewable energy.

VoltStorage

Convertible Note in 2016
VoltStorage GmbH is a German company specializing in the development and production of solar energy storage systems. Based in Olching, Germany, it utilizes eco-friendly vanadium redox flow technology to create power storage devices that allow homeowners to store surplus solar energy generated during the day for use at night. This innovative approach aims to provide renewable energy availability around the clock, contributing to a cleaner and fairer world for future generations. VoltStorage also offers installation and technical support services for its products, which are sold online. The company's commitment to sustainability underscores its mission to enhance the accessibility of renewable energy.

VoltStorage

Seed Round in 2016
VoltStorage GmbH is a German company specializing in the development and production of solar energy storage systems. Based in Olching, Germany, it utilizes eco-friendly vanadium redox flow technology to create power storage devices that allow homeowners to store surplus solar energy generated during the day for use at night. This innovative approach aims to provide renewable energy availability around the clock, contributing to a cleaner and fairer world for future generations. VoltStorage also offers installation and technical support services for its products, which are sold online. The company's commitment to sustainability underscores its mission to enhance the accessibility of renewable energy.

Flair

Seed Round in 2015
Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling. The company builds smart hardware and software for HVAC controls focused on efficiency, comfort, electrification, and smart grid integration. The company's products are sold through multiple channels including direct to consumer, HVAC distribution, and utilities.

Flair

Convertible Note in 2014
Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling. The company builds smart hardware and software for HVAC controls focused on efficiency, comfort, electrification, and smart grid integration. The company's products are sold through multiple channels including direct to consumer, HVAC distribution, and utilities.
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