Cleantech Startups

Changeover Technologies develops patented formula and pelletising technology that converts discarded fine-particle waste streams into recyclable pellets, aimed at cleaning up legacy waste and reducing CO2 emissions. The company works on projects such as quartz recovery for Europe's silicon supply chain and is based in Northern Ireland.

2 investors

ChargePoint designs and deploys EV charging hardware, software, and services for organizations, fleet operators, and charging network businesses. The company operates the largest network of deployed charging ports and provides integrated charging management systems with driver support.

2 investors

ChargeX provides EV charging infrastructure for businesses and the real estate industry, offering its modular Aqueduct charging system along with installation, billing, operation, and support as an integrated package. The system supports up to 10 charging points per supply line and is developed and manufactured in Germany.

2 investors

CiDRA Minerals Processing develops mineral separation and measurement technologies for mining companies, including solutions to improve mill grinding efficiency and mineral recovery. Its offerings serve mining operators addressing challenges such as reduced ore grades, water restrictions, and carbon emissions.

2 investors

Circular11 recycles waste-bound plastic into low-carbon fencing, furniture, and landscaping products such as plastic lumber for the construction and estates sectors. It uses material science, machine learning to optimize formulations for each waste stream, and a digital tracking system to provide traceable, quantifiable impact reporting.

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

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

Clean Energy Fuels supplies renewable natural gas fuel for transportation, targeting vehicle fleets across the United States. It operates in the clean transportation and alternative fuels sector.

2 investors

Clean Food Group develops CLEANOil, a sustainable alternative to traditional agricultural oils and fats produced via its CLEANOilCell fermentation technology platform, using food waste as a feedstock. It supplies drop-in oils and fats to food and cosmetics manufacturers as a lower-emission replacement for products such as palm oil.

2 investors

Clearbot develops autonomous cleanup vessels for waterways that remove surface trash and thick vegetation in single deployments. The company provides water management data and solutions for municipal governments and development organizations.

2 investors

Clevergy provides a software platform for energy retailers and installers to manage customer relationships and centralize operations, offering energy advisory, self-consumption recommendations, home energy management (HEMS), advanced analytics, and features for energy communities and virtual power plants. The platform integrates with distributors and hardware brands without requiring additional hardware, aimed at energy companies in Spain.

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

Clippership builds compact autonomous, wind-powered cargo vessels that move palletized freight across oceans on point-to-point routes between smaller ports. The company targets ocean freight and supply chain logistics with an alternative to conventional containerized shipping aimed at lower costs, faster transit, and reduced carbon emissions.

2 investors

Clir AI automates portfolio reporting, benchmarking, and reforecasting for renewable energy assets across solar, wind, and battery storage, giving asset managers and investment managers a comparable view of portfolio performance. Its tools cover contractual availability reconciliation, budget reconciliation, energy yield reforecasting, and real-time performance monitoring for renewable energy investors.

2 investors

Cloud Cycle equips concrete mixer-trucks with its CloudBox hardware that streams truck data in real-time to its CUBE software platform, monitoring the quality of every concrete delivery from batch to pour. It serves ready-mix concrete producers to reduce waste, improve batching consistency, cut CO₂ emissions, and give dispatchers full delivery visibility via a dashboard or API.

2 investors

cMatter uses AI to optimise building operations, providing insights for property and utility management to improve efficiency, cut operational costs, and reduce environmental impact.

2 investors

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

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

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

Cognition Controls provides cellular-connected HVAC and refrigeration monitoring hardware paired with a dashboard for remote portfolio management, helping operators reduce energy costs and catch equipment issues. It serves multisite commercial operators including restaurants, government facilities, retail, professional services, and education across the US.

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

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

Netmore operates carrier-grade Low Power Wide Area Networks (LoRaWAN) and the Netmore Connect connectivity platform for utilities, property managers, and enterprises running IoT projects such as smart water/energy metering and track-and-trace. It serves critical infrastructure and essential business operations across Europe and the United States.

2 investors