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- 🔦 Discover what’s new and next at the HackSummit Startup Fair
🔦 Discover what’s new and next at the HackSummit Startup Fair
Long duration energy storage, metals and mining, nuclear energy, carbon and methane removal, alternative cement production
Laura Hodgkiss
November 26, 2025
Across 7 verticals, explore 23 up-and-coming ClimateTechs from across NYC, the US and around the world.
Their Founders and CEOs come to the HackSummit eager to showcase their groundbreaking technologies and are actively seeking their next big collaboration, investment, or partnership to scale their impact.
Get ready to meet the founding teams behind advancements in nuclear energy, ammonia-to-power, automated and continuous magnesium production, alternative cement production, metals and mining, long-duration energy storage and many more…
The future of ClimateTech is happening at the HackSummit at Newlab, December 10-11th.
With 100s+ more founders and investors taking to the stage and joining the audience, this is a must-attend event for changemakers, scalemakers and decision makers in Climate Deep Tech.
Ready to join them? Grab your pass and come and meet them IRL next month.
Energy
What: Enerdrape has developed the world's first geothermal panel system to transform underground infrastructure into renewable heating and cooling sources.
How it works: Their innovative technology harnesses geothermal energy from underground spaces such as parking lots and building foundations, providing sustainable thermal solutions for residential and commercial properties. By enabling property owners and real estate developers to tap into untapped underground energy, Enerdrape helps clients achieve their decarbonization goals and enhance energy autonomy in the built environment.
What: Gridient is an AI-driven company specializing in grid edge automation and intelligence solutions for the energy sector.
How it works: Their technology provides edge-based AI solutions that enable grid optimization and automation to support the transition to a decarbonized grid. By focusing on renewable energy integration and smart grid management, Gridient helps utilities and energy providers modernize their infrastructure for a sustainable energy future.
What: Neology is pioneering clean, sustainable solutions for off-grid power generation.
Tell me more: Neology’s advanced Ammonia-to-Power system utilizes cutting-edge ammonia cracking technology to deliver reliable, carbon-free energy with zero emissions. With silent operation and scalability, it is the ideal solution for powering remote industries, construction sites, mining operations, and other off-grid applications.
Vision: To transform energy-intensive sectors by deploying proprietary ammonia cracking technology, revolutionizing clean, scalable, and sustainable power solutions in the most challenging environments.
What: RevaTerra is the world's first AI-powered bioenergy company that transforms secondary biomass into carbon-neutral, high-density clean fuel designed to power AI data centers and high-load operations.
How it works: Their machine learning-optimized platform enables fast, dispatchable energy deployment close to demand, providing scalable power solutions in months rather than years. By utilizing 100% secondary biomass, RevaTerra addresses the accelerating energy demands of the AI era while supporting rural economies and cutting emissions without land-use conflicts.
What: Strobe goes beyond net metering to maximize the value of your power assets by delivering resiliency, cash instead of bill credits, and better returns through direct energy market sales.
How it works: Strobe manages your energy assets and ensure they always operate at peak performance.
What: Terrament is building a patented long-duration energy storage solution that reimagines gravity storage.
Tell me more: Their technology maximizes height and weight to achieve 20x more energy density than other gravity-based energy storage solutions.
More Height: 20x duration from a mile of height using proven drilling tech.
More Weight: 10x power from our cable-free, shaft wall mounted rail design.
What: Thea Energy is a fusion power company founded in 2022 from Princeton Plasma Physics Laboratory, developing proprietary planar coil stellarator technology to commercialize clean fusion energy.
How it works: Their innovative approach simplifies traditional stellarator design using planar electromagnetic coils for safer, cost-effective baseload power generation. Their first system, Eos, focuses on commercial isotope production while accelerating fusion commercialization to provide limitless zero-emission energy.
Construction
What: A startup developing and marketing eco-innovative products made of earth and natural fibres
Tell me more: Criaterra’s low carbon Bio-Geo Agglomerated Stone technology introduces circular masonry blocks and precast products as carbon solution units that can be manufactured using 100% renewable energy with zero process emissions.
What: Juunoo provides modular interior solutions with privacy pods and walls using a patented Velcro-based system that's 7x faster to install than traditional construction. Their circular economy model features reusable components, buy-back programs, reduced waste, and lower costs.
Tell me more: By rethinking the lifecycle of the built environment, Juunoo enables businesses to create flexible, sustainable workspaces that can be easily reconfigured and repurposed.
What: QueensCarbon is revolutionizing cement production with its patented hydrothermal process that operates at significantly lower temperatures and energy requirements than traditional methods, drastically reducing emissions and costs. Through their Q-System platform, the company delivers competitive, carbon-neutral cement with zero green premium, making sustainable cement economically viable.
How: Backed by $10M in seed funding and a $14.5M DOE grant, QueensCarbon is propelling U.S. leadership in low-carbon cement manufacturing and accelerating the industry's transition to sustainable practices.
New Materials
What: TômTex is a leading material science company dedicated to developing a cutting-edge platform technology for creating sustainable textiles sourced directly from waste materials, not fossil fuels. We are building 100% bio-based material that is plastic-free, petro-free and 100% naturally biodegradable without toxic chemicals.
Mission: To create innovative material designs that parallel lifecycles observed in nature and serve as alternatives to the production methods that have contributed to our world’s environmental crisis.
GreenHouse Gas Capture and Removal
What: CREW Carbon is on a mission to remove CO2 across Earth's water cycle by first leveraging wastewater systems as a scalable, deployable solution today.
How: CREW optimizes pH & alkalinity management to make wastewater treatment cheaper and more efficient, while permanently sequestering COâ‚‚.
What: Parallel Carbon have developed a technology that will allow us to affordably remove carbon dioxide directly from the atmosphere while producing clean hydrogen, relying only on water, wind, sunshine and abundant minerals.
Tell me more: Their technology achieves carbon removal for under $100 per ton of CO2 and clean hydrogen production for $1 per kilogram. This dual process not only supports durable carbon storage but also generates high-quality CDR credits and green hydrogen for industrial decarbonisation.
What: Sixteen44 specializes in methane reduction solutions, addressing methane slip in gas engine exhaust through their innovative plasma-catalytic SlipPureâ„¢ technology. Their solutions, including SlipPureâ„¢ Land and SlipPureâ„¢ Marine, have demonstrated up to 99% reduction in methane emissions in recent trials.
How it works: By targeting methane slip in both land-based and marine applications, Sixteen44 provides critical emissions abatement solutions that significantly reduce the environmental impact of gas-powered engines.
Metals and Mining
What: Big Blue Technologies is scaling an automated and continuous way to produce magnesium. Their magnesium technology journey began at a Technology Readiness Level (TRL) of 0. Since then, we’ve tested nearly every chemistry, built over 10 major reactor and condenser systems, and scaled 10,000 times to TRL 6.
Today: They operate a pilot facility near Cheyenne, Wyoming, the only operating primary production plant in North America with a capacity over 1 kg/hr.
What: WAS Company transforms mining waste into sustainable construction materials through innovative solutions like Polycrete (reusable formwork and panels) and Earth Tech (materials derived from mining waste). Based in Monterrey, Mexico, the company redefines the construction industry by creating planet-protecting materials that reduce costs, increase efficiency, and minimize environmental impact on every project.
Mission: To build the future by turning waste into value, partnering with industry leaders like Holcim, Sika, and UNICEF to promote next-generation sustainable building solutions.
Manufacturing
What: Using sugar cane waste produced in Okinawa Prefecture as raw material, we manufacture fibers and fabrics using manufacturing technology in Japan.
How it works: By upcycling unused resources as much as possible, and using them as a substitute for environmentally hazardous substances to provide new value that circulates in the apparel industry.
What: Plastogaz uses proprietary hydrogen-driven hydrocracking technology to upcycle mixed plastic waste into steam-cracker-ready hydrocarbons (green naphtha), achieving 90% regeneration with 40% energy reduction.
How it works: They are revolutionizing plastic waste valorization in the chemicals sector by enabling circular feedstock solutions for existing steam crackers.
Radiance Ebeam
What: Radiance Ebeam builds treatment systems that mineralize contaminants (PFAS) without chemical additives, bulk heat and/or elevated pressure in a compact, scalable, economical form factor.
How it works: Energetic electrons cause bond scission in real time. Heating volatizes organics and remaining char, reactivating GAC for reuse. Integration directly into GAC beds for in-situ reactivation lowers CAPEX and OPEX.
AgriFood
What: Brekland is rethinking crop protection with biodegradable spray-on foams for sustainable agriculture.
How it works: Their first product prevents spring frost losses in crops, while their next-generation solution will transform foam into a smart carrier platform that adds functionality and unlocks new agricultural chemistries.
What: Developing a duckweed farming platform technology to reduce carbon emissions from our food system.
How: Floatmeal supports businesses and farms to integrate into a greener supply chain by providing cost effective, local and climate resilient alternatives to current protein sources.
What: Potenix transforms food waste into clean energy using AI-optimized engineered biology. The company's compact, on-site units convert unavoidable kitchen waste into heat and electricity while eliminating emissions and providing ESG reporting data.
How it works: By turning food waste from a high-cost, high-emission liability into a renewable energy source, Potenix helps businesses reduce waste fees, lower energy bills, and achieve sustainability goals.