Cleantech Startups

CarbonCapture develops CO₂ direct air capture technology aimed at removing carbon from the atmosphere to address climate change. The company operates in the cleantech and carbon removal industry.

2 investors

CarbonCrop uses AI and automation to help landholders, carbon project developers, forestry consultants and primary sector exporters turn carbon removals from their land or supply chain into an asset. It operates a platform for high-integrity, nature-based carbon forestry projects, with an established base in New Zealand's carbon forestry market and plans to expand internationally.

2 investors

Carbonwave develops plant-based biomaterials from seaweed, specifically harvesting brown seaweed (Sargassum) blooms from coastal ecosystems to produce upcycled materials for commercial and local use. The company addresses environmental degradation in tropical and subtropical coastal regions while supplying sustainable alternatives to conventional materials.

2 investors

Carbonyx develops proprietary technology to recover valuable materials from waste rock while permanently removing carbon from the atmosphere, producing carbon-negative and low-carbon materials for infrastructure and supply chains. The company's modular production systems operate under mild conditions and can be deployed near mining, construction, and manufacturing sites.

2 investors

BKW Group is an international energy and infrastructure company that provides solutions across infrastructure, buildings, and energy, including grid expansion, energy-efficient buildings, and large-scale engineering projects. It serves customers facing challenges from climate change, urbanization, and digitalization, and employs more than 12,000 people.

2 investors

CargoKite is a maritime hard tech company developing a new class of small, autonomous, wind-powered (kite-propelled) cargo ships for point-to-point ocean freight in the short-sea and feeder segment. Its core technology is control and route-planning software, aimed at reducing fuel use and emissions for cargo owners and shipping companies.

2 investors

Carnot Innovations offers an AI-powered analytics platform for smart buildings that acquires data from existing building management systems (BMS) and IoT sensors to deliver energy optimization, predictive maintenance, and continuous commissioning. It targets facility managers of buildings with chiller plants, providing actionable insights and automated energy controls.

2 investors

Carrar is a battery technology company that develops battery modules and systems using a proprietary two-phase immersion architecture to improve battery performance and longevity across cell types and climates. Its solutions target automotive, marine, and grid-scale energy storage applications.

2 investors

Cascade Drives develops electric power steering (TruEPS) and linear electric actuators for commercial and heavy-duty electric vehicles, marine loading arms, and industrial applications. Its patented CdGear technology replaces hydraulic systems with energy-efficient electric drives designed for demanding, high-load environments.

2 investors

Aircassie develops air filtration technology for indoor air quality using light-based methods. The company serves customers seeking cleaner and safer indoor environments.

2 investors

Catalyze develops, finances, builds, owns, and operates on-site renewable energy systems — combining solar, storage, and EV charging — for commercial and industrial real estate owners and operators across national portfolios in the US, with no upfront capital cost to the property owner. It also provides proprietary software and solar racking technologies to help partners scale their renewable energy projects.

2 investors

CBAMBOO provides advisory services and software to help companies manage compliance with the EU's Carbon Border Adjustment Mechanism (CBAM), analyse risk and reduce CBAM costs. Founded in 2023 and based in London, it specialises in CBAM management and policy.

2 investors

CEEZER operates an enterprise platform for building and managing corporate carbon credit portfolios, combining procurement, tracking, retirements, and reporting with in-house climate expert advisory services. It offers access to a marketplace of vetted global carbon projects and a proprietary project risk-assessment tool (Prism) for companies pursuing net-zero targets.

2 investors

The Clean Energy Finance Corporation (CEFC) is a specialist investor that funds projects across renewable energy, energy efficiency, and low emissions technologies to support Australia's transition to net zero emissions. It works alongside co-investors and industry to fill market gaps and mobilise additional capital.

2 investors

Ceibo operates mining dust control solutions through its subsidiary Casia, which applies dust suppressors to reduce emissions while saving water and improving operational safety in mining operations.

2 investors

Celerity Craft develops the Dynamic Air Cushion Vehicle (DACV), a marine platform that generates an air cushion beneath its hulls for higher speed, lower fuel use, and amphibious operation from open water to beach landings. Its flagship DACV-12 targets civilian operators (passenger ferry, cargo, research) and defence/government users (Arctic and high-speed patrol, amphibious assault support), with available manned or uncrewed configurations.

2 investors

Cell Propulsion develops full-stack technology for electric and autonomous commercial vehicles, including EV powertrains, energy storage systems, fleet management software, and vehicle autonomy. Founded by former ISRO engineers, it targets commercial vehicle fleets in India.

2 investors

CelLink develops electrical interconnect systems for power and data. It positions itself as a supplier of electrical system products for clients in the electrical/electronics space.

2 investors

CellX Biosolutions develops a biological method that uses bacteria to break down PFAS ("forever chemicals"), positioned as an alternative to conventional disposal methods. The company operates in the environmental cleantech and biotech space.

2 investors

Cemvita uses proprietary microbial strains it calls xtremophiles to convert carbon waste into usable resources, applying synthetic biology to heavy industry and biorefining. Its work spans regenerative bio-inputs for agriculture and circular-economy processes for industrial applications.

2 investors

Cetogenix is a New Zealand-based climate technology company developing engineering and process solutions in the cleantech and circular economy space.

2 investors

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

ChainCraft uses non-GMO fermentation (chain elongation) technology to upcycle organic food residues into bio-based fatty acids, offering alternatives to fossil and palm oil-based chemicals. Its products serve animal nutrition, chemical derivatives, food, flavors and fragrances, and agricultural markets.

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