--- title: Startup Portfolio | Cohort 25-2 description: Cohort 25-2 | Tackling global billion-dollar markets and hard-to-abate sectors, our climate tech startups are addressing the emissions challenges that will make or break this decisive decade. --- [Skip to content](https://www.third-derivative.org/portfolio/tag/cohort-25-2#main-content) [![logo-dark](https://www.third-derivative.org/hubfs/Atomic_Third_Derivative/logos/logo-dark.png)](https://www.third-derivative.org) - [Our Portfolio](https://www.third-derivative.org/portfolio) - [For Entrepreneurs](https://www.third-derivative.org/startups) - [Eligibility & Selection](https://www.third-derivative.org/startups) - [How to Apply](https://www.third-derivative.org/startup-application) - Programs & Opportunities - Innovation Cohorts & Partnerships - [Industrial Innovation Cohorts](https://www.third-derivative.org/industrial-innovation-cohorts) - [Future Industries Partnership](https://www.third-derivative.org/future-industries-partnership) - Impact Archive - [Clean Mobile Power Initiative Cohort](https://www.third-derivative.org/clean-mobile-power-initiative-cohort) - [First Gigaton Captured](https://www.third-derivative.org/first-gigaton-captured) - [Cooling Innovations](https://www.third-derivative.org/global-cooling-innovations) - [Passive Daytime Radiative Cooling](https://www.third-derivative.org/passive-daytime-radiative-cooling) - [Insights & Events](https://www.third-derivative.org/insights) - [About Us](https://www.third-derivative.org/about) - [Our Team](https://www.third-derivative.org/team) - [Careers](https://www.third-derivative.org/careers) - Our Partners - [Corporates](https://www.third-derivative.org/corporates) - [Investors](https://www.third-derivative.org/investors) - [Mentors](https://www.third-derivative.org/mentors) English # Startup Portfolio: Cohort 25-2 ## Climate Technology Startups Third Derivative is proud to present the world's most impactful climate tech startups.  ##### STARTUPS BY COHORT: - [Cohort 417](https://www.third-derivative.org/portfolio/tag/cohort-417) - [Cohort 419](https://www.third-derivative.org/portfolio/tag/cohort-419) - [Cohort 22-1](https://www.third-derivative.org/portfolio/tag/cohort-22-1) - [Cohort 22-2](https://www.third-derivative.org/portfolio/tag/cohort-22-2) - [Cohort 22-3 (First Gigaton Captured)](https://www.third-derivative.org/portfolio/tag/cohort-22-3-cdr) - [Cohort 23-1](https://www.third-derivative.org/portfolio/tag/cohort-23-1) - [Cohort 23-2](https://www.third-derivative.org/portfolio/tag/cohort-23-2) - [Cohort 23-3 (First Gigaton Captured)](https://www.third-derivative.org/portfolio/tag/cohort-23-3-FGC-2) - [Cohort 23-4 (Clean Mobile Power Initiative)](https://www.third-derivative.org/portfolio/tag/cohort-23-4-cmpi) - [Cohort 24-1](https://www.third-derivative.org/portfolio/tag/cohort-24-1) - [Cohort 24-2](https://www.third-derivative.org/portfolio/tag/cohort-24-2) - [Cohort 25-1](https://www.third-derivative.org/portfolio/tag/cohort-25-1) - [Cohort 25-2 (Industrial Innovation Cohorts)](https://www.third-derivative.org/portfolio/tag/cohort-25-2) - [Cohort 25-3](https://www.third-derivative.org/portfolio/tag/cohort-25-3) - [Future Industries Partnership](https://www.third-derivative.org/portfolio/tag/future-industries-partnership) - [Cohort 26-1](https://www.third-derivative.org/portfolio/tag/cohort-26-1) ##### Filter by Topic Ag and Land Use agriculture Ammonia Batteries Biofuels / Synfuels / Chemicals Building Construction Building Heat Building Software Buildings Buildings (cooling / heating / envelopes) Buildings (lighting / appliances) Buildings - Enabling Software Carbon & Methane Management Carbon Capture and Utilization Carbon Markets Clean Fuels Cold Chain DAC Electric Mobility Electricity Electricity - Enabling Software Electricity - Financing/Project development Electricity - Geothermal Electricity - Long Duration Electricity Storage Electricity - Nuclear Power Electricity - Retail Energy Storage Electricity - Solar Power Electricity Software Enabling Software Energy Access EV Charging Infrastructure EV Critical Components Financing and Project Development Fugitive Emissions Future Industries Partnership Hydrogen Industrial Heating Industry Industry - Ammonia/Fertilizer Industry - Battery Manufacturing Industry - Biofuels Industry - Cement Industry - Chemicals Industry - E-Fuels Industry - Mining Industry - Steel Industry - Waste Heat Recovery industry- Hydrogen Long-duration Storage Low Carbon Industrial Materials Low Carbon Materials Negative Emissions Negative Emissions - DAC Negative Emissions - Ocean CDR Other Power Electronics and Hardware Renewable & power Generation Renewable Energy Renewable Generation Renewable Process Heat Stationary Energy Storage Thermal Energy Storage Transportation Transportation - Logistics Services Vehicle Efficiency Waste ##### Filter by Cohort Cohort 22-1 Cohort 22-2 Cohort 22-3 (CDR) Cohort 23-1 Cohort 23-2 Cohort 23-3 (FGC 2) Cohort 23-4 CMPI Cohort 24-1 Cohort 24-2 Cohort 25-1 Cohort 25-2 Cohort 25-3 Cohort 25-4 Cohort 26-1 Cohort 417 Cohort 419 [![Advanced Thermovoltaic Systems](https://www.third-derivative.org/hubfs/advanced-thermovoltaic-systems-logo-updated.png)](https://www.third-derivative.org/portfolio/advanced-thermovoltaic-systems) ## [Advanced Thermovoltaic Systems](https://www.third-derivative.org/portfolio/advanced-thermovoltaic-systems) Turning industrial waste heat into reliable electricity at megawatt scale. [Read More](https://www.third-derivative.org/portfolio/advanced-thermovoltaic-systems) [![Aerleum](https://www.third-derivative.org/hubfs/aerleum-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/aerleum) ## [Aerleum](https://www.third-derivative.org/portfolio/aerleum) Transforming CO2 from point-source or ambient air into green methanol at price parity with fossil fuels. [Read More](https://www.third-derivative.org/portfolio/aerleum) [![Binding Solutions Limited](https://www.third-derivative.org/hubfs/binding-solutions-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/binding-solutions-limited) ## [Binding Solutions Limited](https://www.third-derivative.org/portfolio/binding-solutions-limited) Producing iron ore pellets without high temperatures, enabling the production of green steel at scale. [Read More](https://www.third-derivative.org/portfolio/binding-solutions-limited) [![Bloom Biorenewables](https://www.third-derivative.org/hubfs/bloom-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/bloom-biorenewables) ## [Bloom Biorenewables](https://www.third-derivative.org/portfolio/bloom-biorenewables) Displacing fossil-based chemical feedstocks with renewable biomass derived feedstocks. [Read More](https://www.third-derivative.org/portfolio/bloom-biorenewables) [![Carbon Negative Solutions](https://www.third-derivative.org/hubfs/carbon-negative-solutions-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/carbon-negative-solutions) ## [Carbon Negative Solutions](https://www.third-derivative.org/portfolio/carbon-negative-solutions) Mineralizing CO2 into industrial wastes to create carbon-negative supplementary cementitious materials (SCMs), reducing the need for cement while remediating ground/air pollution at industrial sites. [Read More](https://www.third-derivative.org/portfolio/carbon-negative-solutions) [![Cascade Bio](https://www.third-derivative.org/hubfs/cascade-bio-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/cascade-bio) ## [Cascade Bio](https://www.third-derivative.org/portfolio/cascade-bio) Empowering enzymes—nature's catalysts—to change how molecules are made, displacing energy-intensive petrochemicals with renewable feedstocks to decarbonize the chemicals sector. [Read More](https://www.third-derivative.org/portfolio/cascade-bio) [![CERT Systems](https://www.third-derivative.org/hubfs/cert-systems-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/cert-systems) ## [CERT Systems](https://www.third-derivative.org/portfolio/cert-systems) Converting captured carbon dioxide into ethylene, an essential chemical, without the use of fossil fuels. [Read More](https://www.third-derivative.org/portfolio/cert-systems) [![Cocoon Carbon](https://www.third-derivative.org/hubfs/cocoon-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/cocoon-carbon) ## [Cocoon Carbon](https://www.third-derivative.org/portfolio/cocoon-carbon) Repurposing steel waste into low-carbon supplementary cementitious materials (SCMs) to reduce the carbon intensity of concrete. [Read More](https://www.third-derivative.org/portfolio/cocoon-carbon) [![DexMat](https://www.third-derivative.org/hubfs/dexmat--logoArtboard%201.png)](https://www.third-derivative.org/portfolio/dexmat) ## [DexMat](https://www.third-derivative.org/portfolio/dexmat) Producing a high-performance carbon nanomaterial with properties that can displace emissions-intensive materials including steel, copper, and aluminum. [Read More](https://www.third-derivative.org/portfolio/dexmat) [![](https://www.third-derivative.org/hubfs/dunia-innovations-logo-Artboard%201.png)](https://www.third-derivative.org/portfolio/dunia-innovations) ## [Dunia Innovations](https://www.third-derivative.org/portfolio/dunia-innovations) Integrating physics-informed AI with robotic automation, enabling the discovery of breakthrough electroactive materials 10x faster and at a third of the traditional R&D costs.   [Read More](https://www.third-derivative.org/portfolio/dunia-innovations) [![](https://www.third-derivative.org/hubfs/envicore-logo.png)](https://www.third-derivative.org/portfolio/envicore) ## [EnviCore](https://www.third-derivative.org/portfolio/envicore) Repurposing waste minerals into cementitious materials to replace cement by up to 30% and reduce associated CO2 emissions by 85%. [Read More](https://www.third-derivative.org/portfolio/envicore) [![GreenJams](https://www.third-derivative.org/hubfs/greenjams-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/greenjams) ## [GreenJams](https://www.third-derivative.org/portfolio/greenjams) Transforming agricultural and industrial wastes into carbon-negative bio-concrete. [Read More](https://www.third-derivative.org/portfolio/greenjams) [![Greenore](https://www.third-derivative.org/hubfs/green-ore-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/greenore) ## [Greenore](https://www.third-derivative.org/portfolio/greenore) Converting iron and steel waste into valuable products — precipitated calcium carbonate (PCC) and supplementary cementitious materials (SCMs) — while capturing and safely storing waste CO2. [Read More](https://www.third-derivative.org/portfolio/greenore) [![Helios](https://www.third-derivative.org/hubfs/helios-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/helios) ## [Helios](https://www.third-derivative.org/portfolio/helios) Producing green iron with a novel carbon-free iron reduction method that costs less, is easy to deploy, and has zero direct emissions—enabling green steel production without a green premium. [Read More](https://www.third-derivative.org/portfolio/helios) [![](https://www.third-derivative.org/hubfs/helix-logo-Artboard%201.png)](https://www.third-derivative.org/portfolio/helix-carbon) ## [Helix Carbon](https://www.third-derivative.org/portfolio/helix-carbon) Transforming CO2 into valuable feedstocks using energy-efficient technology, making sustainable production economically viable and scalable. [Read More](https://www.third-derivative.org/portfolio/helix-carbon) [![Hertha Metals, Inc.](https://www.third-derivative.org/hubfs/hertha-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/hertha-metals-inc) ## [Hertha Metals, Inc.](https://www.third-derivative.org/portfolio/hertha-metals-inc) Rapidly scaling technology to produce coal-free steel, dramatically reducing the carbon emissions of steel manufacturing. [Read More](https://www.third-derivative.org/portfolio/hertha-metals-inc) [![HyperHeat](https://www.third-derivative.org/hubfs/hyperheat-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/hyperheat) ## [HyperHeat](https://www.third-derivative.org/portfolio/hyperheat) Providing an efficient alternative to fossil fuel combustion for 99% of all industrial heat applications in the cement, steel, and chemicals sectors. [Read More](https://www.third-derivative.org/portfolio/hyperheat) [![Kraftblock](https://www.third-derivative.org/hubfs/kraft-block-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/kraftblock) ## [Kraftblock](https://www.third-derivative.org/portfolio/kraftblock) Providing thermal storage for high-heat industrial processes that typically rely on fossil fuels, which reduces emissions and improves the economics of direct electrification. [Read More](https://www.third-derivative.org/portfolio/kraftblock) [![NOC Energy](https://www.third-derivative.org/hubfs/noc-energy-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/noc-energy) ## [NOC Energy](https://www.third-derivative.org/portfolio/noc-energy) Enabling industries to replace fossil fuels with renewable electricity for high-temperature industrial heat. [Read More](https://www.third-derivative.org/portfolio/noc-energy) [![](https://www.third-derivative.org/hubfs/oxylus.png)](https://www.third-derivative.org/portfolio/oxylus-energy) ## [Oxylus Energy](https://www.third-derivative.org/portfolio/oxylus-energy) Converting CO2 into carbon neutral fuels and chemical feedstocks for a decarbonized future. [Read More](https://www.third-derivative.org/portfolio/oxylus-energy) [![](https://www.third-derivative.org/hubfs/purifire-energy-logo-Artboard%201.png)](https://www.third-derivative.org/portfolio/purifire-energy) ## [PuriFire Energy](https://www.third-derivative.org/portfolio/purifire-energy) Producing green methanol resulting in a a 95% reduction from fossil-based grey methanol, emitting 7x less CO2 than diesel and 84x times less CO2 than natural gas. [Read More](https://www.third-derivative.org/portfolio/purifire-energy) [![Reclinker Logo](https://www.third-derivative.org/hubfs/reclinker-logo-new.png)](https://www.third-derivative.org/portfolio/reclinker) ## [Reclinker](https://www.third-derivative.org/portfolio/reclinker) Creating a circular model to recycle cement using existing industrial infrastructure in the steel sector. [Read More](https://www.third-derivative.org/portfolio/reclinker) [![Rubi Laboratories](https://www.third-derivative.org/hubfs/rubi-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/rubi-laboratories) ## [Rubi Laboratories](https://www.third-derivative.org/portfolio/rubi-laboratories) Decarbonizing essential chemicals and materials through a carbon-to-materials enzymatic platform with ultra-low carbon, water, land, and energy footprints. [Read More](https://www.third-derivative.org/portfolio/rubi-laboratories) [![SaltX Technology](https://www.third-derivative.org/hubfs/saltx--logoArtboard%201.png)](https://www.third-derivative.org/portfolio/saltx-technology) ## [SaltX Technology](https://www.third-derivative.org/portfolio/saltx-technology) Utilizing plasma, the fourth state of matter, to achieve the ultra-high temperatures needed to produce cement without fossil fuels. [Read More](https://www.third-derivative.org/portfolio/saltx-technology) [![Sensytec](https://www.third-derivative.org/hubfs/sensytec-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/sensytec) ## [Sensytec](https://www.third-derivative.org/portfolio/sensytec) Using sensors to optimize concrete mixes, reduce embodied carbon, and minimize testing waste. [Read More](https://www.third-derivative.org/portfolio/sensytec) [![Solid Carbon](https://www.third-derivative.org/hubfs/solid-carbon-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/solid-carbon) ## [Solid Carbon](https://www.third-derivative.org/portfolio/solid-carbon) Using carbon-negative biochar-based ingredients to transform the built environment into a massive carbon sink, turning concrete from a climate problem into a climate solution. [Read More](https://www.third-derivative.org/portfolio/solid-carbon) [![SUN METALON](https://www.third-derivative.org/hubfs/sun-metalon-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/sun-metalon) ## [SUN METALON](https://www.third-derivative.org/portfolio/sun-metalon) Enabling cost-effective, sustainable metal recycling without the quality degradation of traditional recycling methods. [Read More](https://www.third-derivative.org/portfolio/sun-metalon) [![Tereform, Inc.](https://www.third-derivative.org/hubfs/tereform-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/tereform-inc) ## [Tereform, Inc.](https://www.third-derivative.org/portfolio/tereform-inc) Chemically recycling synthetic textiles—which are made from petrochemicals—with an energy efficient process, diverting materials from landfills and reducing demand for new carbon-intensive materials. [Read More](https://www.third-derivative.org/portfolio/tereform-inc) [![Theseus Development](https://www.third-derivative.org/hubfs/theseus-development-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/theseus-development) ## [Theseus Development](https://www.third-derivative.org/portfolio/theseus-development) Producing sustainable, interlocking concrete blocks without traditional cement, concrete's most emissions-intensive ingredient, to accelerate the transition to a green built environment. [Read More](https://www.third-derivative.org/portfolio/theseus-development) [![Urban Mining Industries](https://www.third-derivative.org/hubfs/urban-mining-industries-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/urban-mining-industries) ## [Urban Mining Industries](https://www.third-derivative.org/portfolio/urban-mining-industries) Repurposing waste glass into a low-carbon cement replacement that improves concrete durability, impermeability, and mitigation of the urban heat island effect. [Read More](https://www.third-derivative.org/portfolio/urban-mining-industries) [![Via Separations](https://www.third-derivative.org/hubfs/via-separations-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/via-separations) ## [Via Separations](https://www.third-derivative.org/portfolio/via-separations) Lowering the embodied carbon of everyday products and materials by replacing thermal separations, a key process to separate substances based on boiling points, with an electrified filtration process. [Read More](https://www.third-derivative.org/portfolio/via-separations) APPLY TODAY: ### Accelerate your success and speed to market with us We’re here to help you bridge critical finance and resource gaps by uniting and aligning the world’s most promising climate tech startups—like you—with D3’s network of committed investors, corporate partners, market experts, and mentors. 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