Cleantech Startups
5,220 companies tagged Cleantech, with their investors and founders.
Customer engagement platform (formerly Simple Energy) redefining how utilities engage their customers.
6 investors
EV Connect provides an OCPP-compatible charging management software platform (Software+), EV charging hardware, and support services for businesses running EV charging programs. Its tools cover energy and revenue management, real-time monitoring, and a driver mobile app; the company is backed by Schneider Electric.
6 investors
Ferveret develops advanced cooling technology for data centers and computing infrastructure, using subcooled boiling methods derived from nuclear reactor engineering. The company serves data center operators and AI/HPC infrastructure providers seeking power-efficient cooling solutions.
6 investors
Fleetzero designs and retrofits commercial vessels with battery-electric propulsion systems to decarbonize ocean shipping. The company builds modular, scalable electrification technology for ship operators and maritime fleets.
6 investors
Found Energy develops rechargeable metal fuels, specifically aluminum-based fuels, for industrial applications that cannot be reached by electrification, offering cost-parity alternatives to fossil fuels for heat and power generation.
6 investors
Android for EV charging - software solution that works with any 3rd party hardware
6 investors
Gradiant designs and builds water and wastewater treatment plants using its proprietary technology stack, helping industrial customers reduce freshwater withdrawal, reuse wastewater, and return clean water to the environment. It serves sectors including semiconductors/microelectronics, pharmaceuticals, food and beverage, power, mining, and renewables, and operates globally.
6 investors
Green Canopy NODE Capital is a fund manager providing investor and capital management services focused on impact investments addressing housing, environmental sustainability, and climate challenges in high-growth cities. The firm manages capital for accredited investors and institutional limited partners seeking financial returns alongside measurable social and environmental impact.
6 investors
GridBeyond operates a technology platform that manages distributed and flexible energy resources, using AI to dispatch flexibility from assets such as utility-scale renewables, battery storage and industrial load into energy markets. It serves industrial and commercial energy users and asset owners, helping them generate revenues and savings while supporting grid balancing and the transition to net zero.
6 investors
H2Pro develops decoupled, membraneless water electrolyzers (DWE) for producing green hydrogen, designed for direct connection to renewable energy sources. The technology aims to lower capital and production costs by removing membranes and platinum group metals for the clean energy and hydrogen production market.
6 investors
Haven offers residential battery backup systems for a fixed monthly price locked for 10 years, handling design, permitting, installation, ongoing operation, maintenance, monitoring, and warranties for homeowners. It provides energy storage service to keep power on during outages.
6 investors
Heart Aerospace develops electric regional aircraft for commercial airline operators. The company designs, builds, and flight-tests electric aircraft to replace combustion-powered regional aviation.
6 investors
Inhibit Coatings develops antimicrobial coatings and additives that use silver permanently bound to polymer resin to inhibit bacterial growth without leaching. Its products target hygiene needs in healthcare, food processing, and public spaces, with availability in Australia and New Zealand.
6 investors
JetZero designs and builds a blended-wing-body commercial jetliner for commercial aviation; the company is developing a full-scale demonstrator airplane slated to fly in 2027 with funding and support from the U.S. Air Force.
6 investors
Kraftblock develops thermal energy storage systems based on a nanoparticle composite storage material, offering stationary and mobile solutions for decarbonizing industrial heat and cogeneration. The technology is aimed at industries seeking to replace fossil-fuel-based heat with renewable energy.
6 investors
Lightship designs and builds the AE.1, an all-electric travel trailer for the RV market. The company aims to bring electrification to recreational vehicles, designing and manufacturing its trailers in Colorado for consumers taking road trips.
6 investors
Lunasonde develops aerial georadiotomography (aGRT) technology that uses low-frequency radar to create 3D compositional images of the subsurface from aircraft, helicopters, drones, and balloons. The company serves mining and resource exploration industries seeking to locate critical minerals and clean energy deposits with minimal environmental impact.
6 investors
LuxWall manufactures transparent insulation products for buildings that enhance daylighting, regulate indoor temperatures, and reduce noise. The company serves property owners and facility managers seeking cost-effective energy efficiency upgrades for existing buildings.
6 investors
Magrathea develops a new electrolytic process to produce magnesium metal from seawater and brines, aiming to establish American and Western supply of this defense-critical material currently dominated by China.
6 investors
MAX operates a transportation platform in Africa that provides vehicles, financing, insurance, and driver training to transport operators and micro-entrepreneurs, and offers ride services to passengers. The company designs and customizes electric vehicles to drive adoption of eco-friendly public transportation across African cities.
6 investors
Membrion develops Electro-Ceramic Desalination (ECD) technology that treats complex industrial wastewater by continuously separating dissolved salts and metals, enabling water recovery and reuse without replacing existing infrastructure. It serves industrial operators facing difficult wastewater conditions and regulatory pressure across various industries.
6 investors
Noon Energy develops ultra-long-duration battery storage using a reversible solid oxide fuel cell and carbon-based storage media to deliver 100+ hours of clean, firm power. Its systems target commercial and industrial operations, microgrids and islands, and data centers and grid-scale energy applications.
6 investors
Novoloop uses chemical recycling technology (its Lifecycled and Recycled+ platforms) to convert post-consumer and post-industrial plastic waste, such as polyethylene bags and packaging, into performance materials like polyols and TPU. It targets manufacturers seeking lower-carbon, circular alternatives to virgin fossil-derived polymers in the chemicals and plastics industry.
6 investors
OctaiPipe offers a collaborative AI platform that optimises data centre cooling to cut cooling energy use by up to 30% and reduce total building energy costs. Its AI agents run on-premise, learn across multiple sites, and provide sustainability reporting and metrics such as PUE, CUE and WUE for data centre operators.
6 investors