Climate Tech Startups

CH4 Global develops greenhouse gas mitigation solutions centered on Asparagopsis seaweed, producing feed supplements that reduce enteric methane emissions from cattle for the livestock and agriculture industries. Its products target beef feedlot cattle, with seaweed aquaculture and manufacturing operations based in Australia.

2 investors

Chalumeau develops a patented electric electrode heating system that replaces fossil-fuel combustion in rotary kilns, delivering the ultra-high process temperatures needed for cement production while cutting combustion-related greenhouse gas emissions. It targets industrial cement producers seeking to decarbonize existing kiln infrastructure without redesigning their plants.

2 investors

Circular IQ offers a software platform for measuring and reporting circular economy performance, including support for the WBCSD Circular Transition Indicators (CTI) and ESRS E5 compliance. It serves companies seeking to assess and improve the sustainability and circularity of their products.

2 investors

Circularity Fuels manufactures electrified, AI-controlled reactors that convert waste gas streams from industrial facilities into sustainable aviation fuel (SAF) using renewable energy and advanced Fischer-Tropsch synthesis. The company serves aviation fuel producers and industrial facilities seeking to monetize waste carbon emissions.

2 investors

Citibox operates intelligent parcel lockers installed in residential buildings that enable residents to receive packages at any time, reducing last-mile delivery CO2 emissions by 52% and optimizing delivery routes. The service targets urban residents and logistics operators seeking more efficient and sustainable package delivery solutions.

2 investors

Clairity develops Direct Air Capture and ex-situ mineralization technology that uses low-cost chemicals and standard construction materials to remove CO2 from the atmosphere and produce enriched CO2 streams. The company targets gigaton-scale carbon dioxide removal to support decarbonization and climate mitigation efforts.

2 investors

CleanHub operates a plastic credit system that funds the collection of plastic waste from coastal and river communities, allowing brands to offset and offset their plastic footprint with verified impact. It serves consumer brands seeking to reduce plastic pollution, with collection verified by TÜV SÜD and B Corp certification.

2 investors

Applied Carbon builds mobile, in-field machines that use precision automation, remote sensing, and thermal processing to convert agricultural crop residues into biochar, a stable form of carbon sequestration. The technology is aimed at farms as a lower-cost approach to durable carbon removal that also improves soil health.

2 investors

ClimateView provides a strategy platform that local governments use to plan, execute, and track climate action across their jurisdictions, turning data into actionable insights. It offers tailored solutions such as climate action plans, energy transition plans, and mobility plans, serving over 300 cities and regions.

2 investors

Climatiq provides carbon emissions calculation and reporting tools that integrate with platforms such as Salesforce Net Zero Cloud, helping organizations measure emissions and support their sustainability efforts.

2 investors

Climitra produces bio-coal designed as a 1:1 drop-in replacement for fossil coal, aimed at cutting emissions by around 90% at a price competitive with coal. It targets steel producers, carbon dioxide removal (CDR) buyers, and project financiers, with a focus on decarbonizing India's steel industry.

2 investors

CNaught is a platform for purchasing and managing high-integrity carbon credit portfolios, curating diversified nature- and technology-based projects that pass a 7-step diligence process and are rated by independent agencies. It serves companies looking to offset emissions, offering reporting and impact-sharing tools plus a carbon credit API for programmatically providing carbon-neutral products and services.

2 investors

Cnergreen develops chemical technologies for oilfield and energy applications, with expertise in nanomaterials for porous media.

2 investors

CO2 AI is an enterprise sustainability platform that helps large organizations measure, reduce, and report carbon emissions across corporate, product, and supplier data. It uses AI to match activity data to emission factors, compute product carbon footprints, engage suppliers, and support reporting standards like CSRD, GHG Protocol, and ISO 14067.

2 investors

Cobalt Water Global develops AI/ML-powered software platforms to help water utilities and industrial operators account for, reduce, and monitor greenhouse gas emissions from wastewater treatment processes. The company serves the water sector with a focus on decarbonization and climate impact.

2 investors

Codio Impact is an ESG software provider focused on industrial sectors such as construction, energy, waste management, and circular economy, offering AI-supported, sector-specific compliance recommendations for mid-sized companies since 2022. It has been acquired by House of Gaia Holding and integrated with Code Gaia's ESG/EHS reporting software.

2 investors

CogniTensor is an enterprise AI company that designs, engineers, and deploys industry-grade AI platforms, offering services spanning AI strategy, data architecture, platform development, and cloud/DevOps infrastructure. It focuses on regulated, data-intensive sectors such as financial services, healthcare, insurance, and ESG/sustainability reporting.

2 investors

ColliMate Space applies AI and machine learning to satellite operations, reducing manual processing delays from hours to minutes for commercial and government organizations. The company delivers near real-time space data and mission-critical insights for disaster response and satellite operators.

2 investors

Common Energy connects businesses, non-profits, and consumers to community solar projects, letting them lower electricity costs and support renewable energy. It offers clean energy strategies for organizations pursuing ESG goals and provides local solar subscriptions for individuals.

2 investors

ComplAi provides software to help businesses manage regulatory compliance, with a focus on integrating sustainability into their operations. The company is a spin-out from assurance provider DNV.

2 investors

Comundo is a company focused on helping its customers reduce carbon emissions and move toward a net-zero planet. The page emphasizes company culture and mission but gives limited detail about its specific product.

2 investors

Concentric develops agricultural technology aimed at improving crop management practices and soil health while reducing environmental impact. Its work is directed at supporting farmers and increasing agricultural output to address the global food supply gap.

2 investors

Contrarian Ventures is an early-stage venture capital firm that invests in climate tech founders, acting as first-cheque investor and offering support through initiatives like the Energy Tech Summit, The Climate Brick, and Climate50.

2 investors

Coral Vita operates land-based, high-tech coral farms to grow coral for reef restoration, selling restoration services and coral supply through a for-profit model rather than an NGO or government one. It works with stakeholders worldwide to provide ready-to-install coral for reef restoration projects.

2 investors