Cleantech Startups

Krosslinker develops aerogel-based materials for thermal insulation, including cooling paints, composite boards, and silica aerogel powders. Its products target industrial and building applications requiring lightweight, high-performance insulation.

3 investors

Kyotherm is an investment company that finances decarbonized heat and energy efficiency projects serving industrial, commercial, and public sector actors in Europe and North America. The firm specializes in greenfield and brownfield infrastructure projects aimed at sustainable CO₂ emission reduction.

3 investors

Lakril develops catalytic technologies to convert biomass into renewable chemicals for use as alternatives to petroleum-derived building blocks. The company applies expertise in catalysis and chemical engineering to advance the circular economy and energy transition.

3 investors

Laminar develops spectral sensors and agentic AI software to optimize production line operations for food and beverage manufacturers. The platform uses digital twins and real-time data analysis to reduce waste, improve efficiency, and automate optimization tasks like cleaning processes.

3 investors

Lava is a climate-tech startup developing isothermal heat-engine and heat-pump technology, including research into knitted metallic structures, metamaterials, and phase-changing materials, to generate clean power at megawatt scale. Its systems aim for high thermal efficiency alongside factory-ready manufacturability.

3 investors

Linear Labs designs and builds high-torque permanent magnet motor systems based on its patented HET (Hunstable Electric Turbine) circumferential flux architecture, along with integrated drive electronics and diagnostic software. It serves energy, industrial, nuclear, defense, and mining applications, including a PitchPro 2000 drop-in pitch system retrofit for aging wind turbine fleets.

3 investors

Liquium develops a new catalyst technology for producing clean (zero-carbon) ammonia under milder operating conditions than the traditional Haber-Bosch process, aiming to lower production and operating costs. The company targets heavy industry, including the maritime sector, positioning clean ammonia as an energy carrier for decarbonisation, with a focus on the Asia-Pacific region.

3 investors

Litus develops a patent-pending nanotechnology process (LiNC) for Direct Lithium Extraction (DLE) from aqueous sources, producing high-purity lithium compounds while preserving source water. The company targets the battery metals and energy sector and has built a demonstration unit to validate the scale and economics of its extraction technology.

3 investors

LIVAQ produces electric off-roading vehicles designed for adventure experiences with a focus on sustainable rider-environment interaction.

3 investors

LoCI Controls builds hardware and software for landfill gas collection, using field sensors and automation algorithms to monitor gas composition, flow, pressure, and liquid levels and to automatically tune wellfield performance. Its system serves landfill operators seeking more consistent methane capture and improved plant uptime.

3 investors

Lummus Technology develops and licenses proprietary process technologies and equipment for the energy and chemicals industry, covering petrochemical and polymer processes, heaters and heat transfer equipment, clean fuels, catalysts, hydrogen, and natural gas processing. It also provides process development, consulting, life-cycle services, and digitalization for refining and petrochemical producers worldwide.

3 investors

LUXTECH manufactures LED light engines and modules, including specification-grade LED tape and modules for cylindrical, globe, and architectural fixtures. It supplies both mass-produced and custom LED components to luminaire manufacturers and lighting projects.

3 investors

Livestock Water Recycling provides the LWR System, a manure treatment technology that reduces manure volume, concentrates and segregates nutrients for fertilizer application, and recovers clean reusable water. It serves livestock farms worldwide to lower greenhouse gas emissions and improve farm efficiency and environmental sustainability.

3 investors

Macro Oceans develops seaweed-based (kelp) feedstocks and materials as a low-carbon alternative to petroleum-based chemicals and products, building a traceable seaweed supply chain with brand, technology, and grower partners.

3 investors

MacroCycle uses a proprietary chemical process called SolvoGenesis, based on solvent systems and macrocyclic chemistry, to convert textile waste into pure polyester resin at low cost. Its products include MacroTEX, a 100% polyester made from textile waste, and MacroPACK, a virgin-grade PET resin for plastic bottles derived from end-of-life textiles.

3 investors

Magnotherm develops magnetocaloric cooling systems that use magnetic materials instead of conventional refrigerants, offering more energy-efficient commercial refrigeration for supermarkets and applications in hydrogen liquefaction. The German deep-tech company builds cooling and temperature-control technology derived from materials research.

3 investors

Mangrove Lithium operates an electrochemical, modular lithium refining platform that converts raw lithium from brines, hard rock, clay, geothermal DLE, and recycled batteries into battery-grade lithium hydroxide or carbonate. It serves lithium producers, battery recyclers, and battery manufacturers, and can co-locate its technology near extraction, recycling, or manufacturing sites; the company operates in North America.

3 investors

ManholeMetrics designs and deploys wastewater level sensors paired with a monitoring software platform (Porthole) that give water utilities real-time visibility into sewer and stormwater networks. The company serves utilities in the UK and US, focusing on improving the resilience, safety, and performance of wastewater infrastructure and preventing flooding.

3 investors

Mantel Capture, Inc. appears to operate in process engineering and commissioning, with roles referencing boilers, licensing, and research; the page itself provides no explicit statement of the company's product or market.

3 investors

MarinaTex develops natural polymer materials such as films, coatings, and dissolvables intended to replace plastic while matching plastic-like performance and fitting into existing manufacturing systems. It targets global consumer brands and manufacturers seeking sustainable material alternatives.

3 investors

MaRS is a Toronto-based innovation hub and startup support organization that provides Canadian founders with office/lab space, advisory services, investor and customer connections, and programming from pre-seed funding through international expansion. It focuses on health and life sciences, cleantech, and emerging technologies such as AI, quantum, and robotics.

3 investors

Material Evolution develops low-carbon cement using a proprietary Alkali Fusion process that produces a clinker-like material at ambient temperatures from industrial byproducts, wastes, and natural materials. It serves architects, engineers, and contractors, applying AI to material development and building compact factories for scalable, lower-emission cement production.

3 investors

Matter. is a venture-backed cleantech company that designs and builds microplastic and micropollutant capture and filtration technology, including products for the laundry sector and industrial-scale water filtration systems for textile manufacturing. It serves industrial and consumer markets, with a focus on protecting waterways from microfibre pollution and expansion into South Asian textile hubs.

3 investors

MechanoCross is a Hokkaido University spin-out that develops and provides mechanochemical organic synthesis technology, including solvent-free "mechano" reaction methods and insoluble high-performance materials. It aims to enable chemical manufacturing that reduces reliance on petroleum resources and carbon emissions for industrial and pharmaceutical producers.

3 investors