Cleantech Startups
5,222 companies tagged Cleantech, with their investors and founders.
HydroPoint provides smart water management technology, including subscription-based IoT solutions for irrigation and water efficiency, serving enterprise customers, municipalities, and public agencies. The company focuses on reducing water use through smart irrigation controllers, soil moisture sensors, and flow sensors.
4 investors
HyperHeat develops electric high-temperature industrial heating technology reaching up to 2000Β°C, powered by renewable electricity. Its solutions target heavy industries such as steel, cement, glass, and base chemicals, enabling them to replace fossil fuels with renewable energy.
4 investors
Infyos provides a platform that maps renewable energy supply chains beyond Tier 1 down to raw materials, identifying material, location, and factory-level risks and suggesting mitigations. It helps large renewable energy and mobility companies assess supplier compliance risk against regulations such as the EU Battery Regulation, UFLPA, and CS3D.
4 investors
Inlyte designs and manufactures iron-sodium (sodium metal chloride) batteries for commercial, industrial, and utility-scale energy storage systems. The US-based company positions its technology as a long-duration alternative to lithium-ion for grid resilience and renewable integration.
4 investors
InPlanet uses Enhanced Rock Weathering (ERW) β spreading crushed basalt across croplands and pastures β to permanently remove atmospheric carbon and remineralize depleted soils, generating independently verified carbon removal credits for corporate buyers. It operates across Brazil's agricultural heartland and sells ERW credits to organizations seeking durable carbon removal alongside soil and farmer benefits.
4 investors
Isometric operates Certify, an AI-agent certification platform and public registry for carbon removal and reduction credits, verifying project evidence across areas such as industrial materials, capture and storage, clean power, and low-carbon fuels. It serves project developers and auditors, publishing each certificate with a full chain of custody from issuance through retirement.
4 investors
Jaza operates a decentralized solar-powered energy network across Sub-Saharan Africa, recharging batteries at local systems to power homes and businesses in off-grid communities. The company's off-grid energy systems are run by local operators ("Jaza Stars") and serve over one million people across East and West Africa.
4 investors
JEPLAN is a Japanese group focused on recycling and circular economy, working with domestic and international partners under the mission of "circulating all things." It aims to advance a circular economy through recycling technologies and operations across its business sites and factories.
4 investors
JetCool builds single-phase, direct-to-chip liquid cooling modules using its microconvective cooling technology to manage heat in high-power electronics such as data center servers, high-performance computing systems, and semiconductors. Its products cool the highest power-density processors while reducing power consumption and eliminating water use, serving enterprise and defense-grade computing customers.
4 investors
Jetti Resources is a technology company that enables increased copper production from existing mines by extracting copper from low-grade ores previously considered uneconomical to process. The company provides a low-risk solution for mining operators seeking to unlock additional copper supply for the energy transition without requiring new permits, process changes, or major capital investment.
4 investors
Kanin Energy is a turnkey developer that builds, finances, and operates on-site power systems, including waste-heat-to-power and cogeneration assets, converting industrial waste heat into electricity and process heat. It serves heavy industrial operators and data center developers to lower energy costs, reduce emissions, and improve power reliability, offering commercial models such as Energy-as-a-Service.
4 investors
LanzaTech converts carbon-rich gases from industrial sources like steel mills and landfills into fuels and chemicals using synthetic biology. The company serves heavy industries seeking to reduce emissions and create value from waste streams.
4 investors
Leap builds a platform that enables virtual power plant management by connecting storage, electric vehicle, and smart building systems to grid-support energy programs, helping reduce fossil fuel dependence and integrate renewable energy.
4 investors
Lingrove designs and manufactures Ekoa, a bio-based composite material made from flax and plant resins used as wall protection, wall coverings, ceilings, and millwork for hospitality, healthcare, and workplace interiors, as well as automotive interior applications. The company manufactures its products in the USA with a focus on sustainable, high-performance materials for the built environment.
4 investors
Lucend builds an AI-driven platform that optimizes data center operations to reduce energy and water consumption by up to 40%, targeting data center operators seeking to improve resource efficiency and sustainability. The company enables data centers to operate as intelligent ecosystems while reducing global energy consumption for cooling infrastructure.
4 investors
Manastu Space develops green propulsion systems and debris collision avoidance technology for satellites and launch vehicles, offering thrusters for functions such as collision avoidance maneuvers, station keeping, and controlled de-orbiting. The company serves the commercial and strategic space sector and was an early mover in the Indian space ecosystem.
4 investors
Mantle8 is a natural hydrogen exploration company developing proprietary geoscience technologyβincluding its GeoLogix prospect-generation algorithm and HOREX multiphysics imagingβto locate and quantify naturally occurring hydrogen resources. It aims to produce commercially viable natural hydrogen as a fuel for industrial applications, building on geological research originally conducted at its predecessor consultancy M&U.
4 investors
Maritime Fusion designs and builds zero-emission fusion reactors for deployment in maritime transport and remote energy installations. The company aims to use these off-grid applications as a pathway to develop cost-competitive grid-scale fusion reactors.
4 investors
Mesodyne develops patented electricity generation technology, including LightCell, for military and commercial users requiring portable and durable power solutions.
4 investors
Molekule develops light-activated air purification technology combined with HEPA and carbon filtration to capture and destroy airborne pollutants and pathogens in homes and commercial spaces. The company serves residential customers, businesses, hospitals, schools, and public transportation facilities seeking clean indoor air solutions.
4 investors
Electrified Thermal Solutions builds the Joule Hive Thermal Battery, a thermal energy storage system that runs electricity through electrically-conductive E-bricks to store off-peak power as heat up to 1,800Β°C and deliver zero-carbon industrial heat to furnaces, boilers, and kilns. It targets heavy industries such as cement, steel, chemicals, and glass that require high-temperature process heat.
4 investors
Neptune Robotics develops deep-tech, data-driven solutions for the maritime and shipping industry to support decarbonization. The company works on cleaner shipping through robotics and data.
4 investors
Neuron Mobility designs and operates shared e-scooter and e-bike networks, building commercial-grade vehicles and in-house fleet management and safety technology for its micromobility services. It partners with city councils as customers and, though founded in Singapore, is now focused on Australia.
4 investors
Norsepower develops wind-assisted propulsion systems for maritime vessels to reduce fuel consumption and emissions. The company serves shipping operators and vessel owners seeking to lower operational costs and environmental impact.
4 investors









