Cleantech Startups

Algenesis develops plant-based, biodegradable polyurethanes intended to replace petroleum-based materials across manufacturing applications. The company offers two chemical systems positioned as durable, non-toxic alternatives that avoid microplastics and support material circularity.

2 investors

Alicia Bots develops autonomous robotic systems for hull maintenance and inspection in maritime and offshore industries. The company's RoverClean robots perform non-abrasive cleaning to reduce fuel consumption, emissions, and operational costs while eliminating diver risks and chemical pollution.

2 investors

Alkemio develops a modular, input-agnostic separation platform for refining rare earth elements into high-purity materials. It targets the rare earths refining industry, offering an alternative to concentrated conventional refining for uses spanning electronics, semiconductors, EVs, wind turbines, defense, and robotics.

2 investors

Allegro Energy develops long-duration flow batteries using a water-based microemulsion electrolyte made from common, globally available materials for grid and industrial energy storage. The batteries are manufactured in Australia and marketed as non-flammable, recyclable, and lower-cost at long durations.

2 investors

Allium Bio develops a co-culturing system that grows multiple species—such as algae, fungi, and yeasts—together to produce food ingredients that combine their nutritional properties like proteins, fats, and vitamins. The company aims to design sustainable co-cultured ingredients for the food industry using faster modeling in place of lengthy research.

2 investors

Alsym Energy develops non-flammable, high-performance sodium-ion batteries for energy storage applications. The company serves the energy storage market with an American-made alternative to lithium-ion technology.

2 investors

Altum Technologies develops ultrasound technology for industrial cleaning, fouling prevention, and separation in production processes. The system is installed externally on existing equipment without requiring process modifications and can be remotely monitored via IoT.

2 investors

AMMP offers a platform for commercial and industrial (C&I) solar operators that combines technical monitoring, commercial tracking, and stakeholder reporting for distributed solar and battery portfolios. It provides real-time site dashboards and performance analytics to help developers monitor and optimize clean energy assets.

2 investors

AMP builds AI-powered waste sortation systems that automatically separate and identify recyclable materials to improve purity, efficiency, and recovery rates for recycling facilities. The company serves recyclers and waste management operations globally to modernize recycling infrastructure and economics.

2 investors

Ampd Energy makes the Enertainer, a connected battery energy storage system designed to replace diesel generators for power on construction sites and other demanding environments. The product aims to cut site CO2 emissions, fuel costs, noise, and safety hazards while providing reliable portable power.

2 investors

Amphico develops PFAS-free performance textile materials, including Amphitex, a waterproof and recyclable membrane that avoids the durability and comfort trade-offs of alternatives, and Amphicolor, a waterless textile coloring solution. The company serves the textile and apparel manufacturing industry with sustainable material technologies.

2 investors

AmphiStar produces biosurfactants made from biobased waste and side streams using patented biomass-conversion technology, for use in consumer products such as home care and personal care as well as industrial cleaners, textiles, and agrochemicals. The company focuses on producing uniform, pure, and customizable biosurfactants as an alternative to conventional surfactant mixtures.

2 investors

AmpliSi develops porous silicon battery anode material using a proprietary silane-free, low-temperature magnesiothermic process that converts silica into high-energy silicon anodes to replace graphite in lithium-ion batteries. It targets battery manufacturers and research partners, primarily for electric vehicle and energy storage applications.

2 investors

Amyris develops a biomanufacturing platform that uses fermentation and microbial engineering to produce natural ingredients and rare compounds at scale for partners across industries such as specialty chemicals, food ingredients, and consumer products. Founded in 2003, the company focuses on sustainable, bio-based sourcing of molecules.

2 investors

Anaconda Systems designs and builds in-vessel composting facilities that convert urban organic waste into fertilizer soil amendment in under 10 days without mechanical agitation. It provides turnkey organic waste processing infrastructure for municipalities and private waste services, with a pilot facility in Vancouver, BC.

2 investors

Anesco develops, builds, operates and optimises grid-scale solar and battery storage assets, and provides energy efficiency services to UK utilities, local authorities and social housing through the ECO scheme. It serves renewable energy investors and works across the UK and northern Europe including Ireland, the Netherlands, Denmark and Belgium.

2 investors

ANNEA provides an AI-powered predictive maintenance and asset optimization platform for renewable energy assets such as wind turbines, using only 10-minute SCADA data without additional hardware. The brand-agnostic software detects and diagnoses underperformance to reduce operational costs, extend component lifetime, and increase energy production for renewable energy operators.

2 investors

ANPOLY develops nanocellulose, an eco-friendly advanced material made from biomass, along with proprietary technology for its production and industrial applications. The company works with customers across various industries to create sustainable products using its resource-circular materials.

2 investors

Antefil develops hybrid fibres — glass reinforcement fibres individually coated with a meltable, recyclable plastic — used to produce lightweight composites for energy-efficient structures. The product targets composites manufacturing with a focus on recyclability and reducing reliance on unrecyclable resins.

2 investors

Anzen makes a solid-state, thermoelectric climate control system that provides heating, cooling, and fresh air on a per-room basis without refrigerants, compressors, or outdoor units. The plug-and-play wall units are designed for quick retrofit in space-constrained UK homes such as flats, maisonettes, and terraced houses.

2 investors

Apix Analytics builds compact, field-ready gas analysis instruments that deliver real-time measurement for applications such as natural gas, biomethane, hydrogen, and pollutant analysis. Founded from a collaboration between CEA-LETI and Caltech, it serves energy and industrial customers through a global network of integrators and distributors.

2 investors

Applied Impact Robotics builds robotic systems for in-service inspection of crude oil storage tanks, allowing inspections without shutdowns or human entry into hazardous, sludge-filled tanks. The technology serves the oil and gas industry, aiming to reduce inspection costs, improve safety in line with API653 standards, and lower environmental impact.

2 investors

Applied Particle Technology develops air quality sensors and AI-driven analytics platforms for industrial operations monitoring. The company serves mining, construction, and industrial customers in North America to improve workplace safety, environmental compliance, and operational efficiency.

2 investors

Aqua Robur Technologies provides hardware sensors and software (including an IoT portal and its Fenix Hub) for monitoring water infrastructure, detecting drinking water leaks, investigating inflow and infiltration, and monitoring overflow locations. Its solutions work across the water network, including areas without electricity or fiber connectivity, for utilities and water network operators.

2 investors