Cleantech Startups

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

Copperstone Technologies designs and manufactures HELIX amphibious screw-drive robots that gather data in hazardous environments such as mine tailings facilities and water bodies for environmental monitoring and tailings management. It serves industrial and mining clients seeking to reduce safety costs and access hard-to-reach terrain, and is based in Canada.

2 investors

CORE POWER develops ship-based nuclear power plants designed to deliver reliable, emissions-free energy for industry and communities. The company also works on nuclear propulsion systems for maritime applications.

2 investors

Cowa develops compact thermal energy storage systems using phase change materials (PCM) based on salt hydrates, designed to connect with heat pumps and photovoltaic systems for home heating. Its products, such as the Cowa COMPACT Cell, store excess energy to reduce energy costs and CO2 emissions.

2 investors

Enel is an energy utility that generates, sells and distributes electricity while developing clean and innovative energy solutions across Europe, Latin America, North America, Africa, Asia and Oceania.

2 investors

Cox Cleantech is an investor that backs cleantech founders and companies advancing circularity and resource efficiency across industries. It partners from early startup stage through later-stage growth, offering capital, enterprise expertise, and a strategic network, along with residency, accelerator, and growth programs.

2 investors

Cozero offers an enterprise carbon management platform with three modules (Log, Act, Share) that centralize Scope 1, 2, and 3 emissions data, model decarbonization scenarios by ROI, and produce audit-ready disclosures for frameworks like CSRD and CDP. It targets finance and sustainability leaders at large enterprises, with industry-specific depth for logistics, transportation, and industrial manufacturing.

2 investors

Culligan provides water treatment and purification solutions for residential and commercial customers. The company has offered water softening, filtration, and related services since 1936.

2 investors

CustomCells develops and industrializes customer-specific premium battery cells, supporting clients from initial concept through material selection, prototyping, pilot production, and gigafactory commissioning. It serves automotive manufacturers, the aviation sector, and other industrial customers focused on electrification and decarbonization.

2 investors

DaisyChain Energy offers an AI-enabled software platform for managing electric load, including monitoring usage, optimizing load profiles, controlling devices like batteries and EV chargers, and handling electrification, decarbonization, and compliance. It serves commercial building types such as multifamily, office, retail, hospitals, and universities, targeting buildings, enterprises, and real estate portfolios.

2 investors

DashamLabs develops silica aerogel flexible insulation sheets using process innovations aimed at making high-performance thermal insulation cost-efficient and scalable. Based in India, it targets industries including oil & gas, automotive, cold chain, aerospace & defence, and construction.

2 investors

Dat Bike designs and sells electric motorcycles, including its Quantum, Era, and Weaver model lines, along with accessories, aftersales support, and test-ride services. It operates a network of retail stores in Vietnam serving consumer riders.

2 investors

Decarice develops patented, retrofittable dual-fuel combustion systems (DDI technology) that let heavy diesel fleets and industrial equipment substitute natural gas or hydrogen for diesel. It targets heavy industry seeking emissions compliance and energy security through phased clean-fuel adoption.

2 investors

Delfos offers an AI-powered platform for monitoring and performance management of renewable energy portfolios, using predictive anomaly detection to reduce downtime and recover revenue for power plant operators. It serves renewable energy operators managing wind and other renewable assets, providing failure prediction, maintenance optimization, and automated reporting.

2 investors

DemandQ provides a software overlay that integrates with a building's existing automation system (via BACnet, Modbus, and other protocols) to reduce peak electricity demand by intelligently queuing HVAC and other equipment operation, without new hardware. It serves multi-site commercial portfolios such as retail chains, banking networks, telecom, and restaurants, as well as energy service companies and integrators, delivering IPMVP-verified demand and energy savings.

2 investors

Deutsche Sanierungsberatung provides energy efficiency consulting for German homeowners, including on-site building assessments, individual renovation roadmaps (iSFP), and help applying for state subsidies (KfW, BAFA). It advises on measures such as photovoltaics, heat pumps, and insulation to reduce energy costs.

2 investors

DG Matrix builds the Interport platform, a multi-port solid-state transformer (SST) system for software-defined power distribution and electrification. It targets AI data centers, commercial and industrial electrification, EV fleet electrification, and utility environments where legacy power infrastructure is reaching capacity limits.

2 investors

DigitalPaani offers a platform that manages water and wastewater treatment plants (STPs, ETPs, filtration/UF/RO systems) by using sensor data, automation, and workflow management to improve compliance, uptime, water recycling, and operating costs. It serves commercial complexes, industrial facilities, campuses, and hotels operating treatment plants across India.

2 investors

Directa Plus produces and supplies graphene nanoplatelets-based products under the G+ Graphene Plus brand, using a chemical-free and sustainable production process built for large supply chains. Its graphene materials are applied across consumer and industrial markets to add new properties or enhance the performance of standard materials.

2 investors

Divirod provides real-time global water data by combining IoT sensing with analytics to deliver monitoring, nowcasts, forecasts, and early flood warnings. It serves government agencies, dam and reservoir operators, watershed authorities, real estate, and research institutions seeking to manage flood, drought, and water risk.

2 investors

Dot Ingredients develops surfactants made from cellulose as a sustainable alternative to the fossil-fuel- and palm-oil-based surfactants used in cosmetics, cleaning, and food products. It targets manufacturers across these industries that rely on surfactants as an ingredient.

2 investors

Drop Water builds smart refill stations that dispense water with customizable flavors, boosts, carbonation, and temperature control as an alternative to bottled drinks. The plug-and-play machines are aimed at offices, gyms, hotels, private clubs, sports arenas, and other commercial locations.

2 investors

DryFlow (DryFlow Magnetics) develops a waterless, dry magnetic mineral separation technology (the patented Kuchel Process / stacked magnetics) that upgrades low-grade magnetite and tailings into high-purity, DRI-grade iron concentrates without process water. It serves miners, steelmakers, battery producers, and critical mineral processors, with a test facility in Adelaide and a focus on Australia's iron ore and critical minerals sector.

2 investors

Dugu Systems develops simple cycle gas turbines that combust fuel with oxygen at low pressure, using simpler materials and components to generate electricity and heat at lower cost. The turbine runs on natural gas, field gas, propane, or biogas and produces a high-purity CO₂ working fluid that can be captured and sold to industrial customers.

2 investors