Cleantech Startups

Bia is a technology-driven electricity retailer in Colombia that lets businesses switch their energy provider and replace traditional meters with its proprietary BiaMonitor smart meter. Its web and mobile platform offers real-time consumption monitoring, AI-based optimization, consolidated billing, renewable energy certificates, and analytics for corporate energy management.

7 investors

BlocPower provides construction management and financing for energy-efficient building upgrades, serving building owners, developers, and communities across the United States. The company retrofits buildings to reduce emissions and improve efficiency as climate solutions.

7 investors

Blykalla develops a first-of-a-kind lead-cooled small modular reactor (SMR) using a patented aluminum-alloyed corrosion-resistant steel, and has applied to build an advanced nuclear reactor park at Norrsundet, Sweden delivering around 330 MW of baseload power. The company originated as a spin-off from the Royal Institute of Technology in Stockholm and works in the advanced nuclear energy sector.

7 investors

Built Robotics develops autonomous robotics systems for solar energy installation, specifically for piling, trenching, and safety applications in solar farm construction.

7 investors

Buncha is a social commerce platform that delivers groceries and products from favorite stores on a neighborhood-based schedule. The platform focuses on lowering delivery costs and reducing carbon emissions for U.S. consumers.

7 investors

Cabinet provides a platform for retailers to build private-label OTC and Rx medicine programs, covering formulation, sustainable packaging, and supply chain execution, and connects manufacturers to demand. It offers medicines in multiple formats with capabilities like clean-label, third-party testing, and refillable plastic-free packaging.

7 investors

Captura develops Direct Ocean Capture technology using bipolar membrane electrodialysis to remove CO₂ from the upper ocean and atmosphere. From its Pasadena facility, the company also manufactures high-performance membranes and electrodialysis stacks for carbon removal and other sustainability-focused industrial, resource, and energy applications.

7 investors

ChemPower develops an abrasive-free chemical mechanical planarization (CMP) technology and materials for advanced semiconductor chip manufacturing. Its benign chemistry aims to reduce defects, improve yield, and enable metal recovery and water recycling in fabs.

7 investors

ConnectDER makes meter socket adapters (meter collars) that connect residential solar, battery, and EV charging systems directly at the electric meter, avoiding panel upgrades and complex electrical work. Its products are sold to solar, storage, and EV installers across the U.S. to reduce install time and labor costs.

7 investors

Conservation Labs develops H2know, a smart water monitoring system that uses machine learning to detect leaks and optimize water consumption through sound analysis in plumbing pipes for residential and commercial properties. The company also offers Sustainable Machines, a platform for predictive maintenance monitoring across industrial equipment.

7 investors

cylib operates an end-to-end lithium-ion battery recycling process that recovers critical raw materials such as lithium, graphite, nickel, cobalt, and manganese using a proprietary water-based method, returning them to the battery production value chain. Based in Aachen, Germany, the company targets European battery material supply chains with a focus on reduced carbon footprint and renewable-powered production.

7 investors

Dandelion Energy designs and installs geothermal heating and cooling systems for homes, positioning geothermal as a primary heating and cooling solution for both new and existing residential buildings.

7 investors

DrinkPrime offers smart water purifiers to Indian households through a rent-to-own subscription model that includes free maintenance, delivery, and relocation, with an app to track water consumption and filter health. It serves consumers across 9 cities in urban India with purifier options including Copper, Mineral+, and Alkaline.

7 investors

Electra develops a chemistry-based iron production process powered by clean energy to produce iron at scale without environmental damage. The company serves industrial iron and steel manufacturers.

7 investors

Enpal offers residential solar systems for German households, available for purchase or rental in an all-in-one package that can include battery storage, a wallbox, an app, and a heat pump. The company handles consultation and installation through regional craftsmen, positioning itself as a market leader in Germany.

7 investors

Enter offers heat pumps and photovoltaic systems for homeowners, including online building analysis, expert consultation, system sizing, and installation through certified regional SHK (heating and plumbing) master contractors. The company also handles KfW subsidy applications and provides long-term service such as remote maintenance, operating in Germany.

7 investors

Greenlyte develops its LiquidSolar technology, which captures air, sunlight, and water to produce high-purity fuel feedstocks for synthetic (e-)fuels aimed at reaching cost parity with fossil fuels. Based in Germany's Ruhr region, it targets defossilization for hard-to-abate industries and domestic e-fuel production in Europe.

7 investors

Genecis commercializes the production of polyhydroxyalkanoate (PHA), a biodegradable polymer made from bacteria that consume organic waste, offering a sustainable alternative to petroleum-based plastics for packaging, textiles, medical devices, and other applications. The company applies circular economy principles to create high-quality, eco-friendly products that break down naturally without microplastic pollution.

7 investors

GlacierGrid provides smart energy management software that monitors and optimizes HVAC and refrigeration systems to reduce energy consumption and costs. The platform serves businesses seeking to lower operational expenses while reducing environmental impact.

7 investors

Gradient manufactures plug-in 120V window heat pumps that provide cold-climate heating and cooling, along with the Nexus energy control software that coordinates distributed units. Its products target multifamily and public housing electrification retrofits, avoiding costly electrical upgrades and refrigerant handling.

7 investors

Idle Smart makes automated idle reduction systems for heavy-duty trucking fleets, cutting fuel use, downtime, and CO2 emissions from extended engine idling. Its products include cold-start safeguards, remote fleet management, and SmartInsights, an AI-powered predictive maintenance tool, serving fleets across North America.

7 investors

LevelTen Energy operates a platform that connects renewable energy developers with customers and market participants, facilitating project visibility and deal-making in the renewable energy sector.

7 investors

Lowercarbon Capital is a venture capital firm that invests in climate technology companies working to reduce CO2 emissions, remove carbon from the atmosphere, and cool the planet. Its portfolio spans energy, transportation, industrial materials, and agriculture.

7 investors

Mast combines forest restoration with biomass burial to remove carbon and restore wildfire-affected landscapes. The company operates as an end-to-end reforestation provider, managing seed selection, seedling cultivation, and carbon sequestration across its owned nurseries and project sites.

7 investors