Cleantech Startups

Thermondo installs heat pumps, photovoltaic systems, and energy management solutions for homeowners in Germany, handling planning, government subsidy applications, and installation as a complete package. The company employs its own tradespeople and provides maintenance and 24-hour emergency service.

5 investors

Tibber is an electricity provider offering dynamic 15-minute spot-market pricing and fixed tariffs, paired with technology that automatically adjusts home energy consumption to optimize for price and reduce waste. It targets homeowners seeking to lower electricity bills, and its Grid Rewards feature pays users for automatically shifting consumption to help balance the grid.

5 investors

Tynt develops a patented Reversible Metal Electrodeposition (RME) platform for dynamic dimming and smart tinting of transparent surfaces, ranging from smart eyewear to building facades. The technology enables tunable light transmission, blackout, and switchable mirror functions for adaptive hardware applications.

5 investors

Vessev develops electric hydrofoiling technology and builds vessels for marine transport, aiming to make water travel more sustainable. Its first vessel, the VS-9, launched in 2024.

5 investors

Volt14 Solutions develops silicon-majority anode materials that replace conventional graphite anodes in lithium-ion battery cells, aiming to increase energy density and lower cost while remaining compatible with existing cell manufacturing infrastructure. It sells integrated, ready-to-use anode solutions to battery cell manufacturers.

5 investors

Voltaiq offers an AI-powered SaaS platform for the battery industry that collects and harmonizes data across the battery lifecycle, automates anomaly and quality detection, and provides root-cause analysis and natural-language data querying. It serves battery R&D, product development, production, and in-field operations teams across sectors such as EVs, consumer electronics, satellites, and energy storage systems.

5 investors

Volteum is a fleet intelligence platform that connects to vehicles via OEM APIs to provide real-time data on health, charging, maintenance, and costs across all vehicle types. It serves fleet managers transitioning to or operating electric vehicles alongside traditional combustion engines.

5 investors

WayTrade operates a technology platform for trading low-carbon feedstocks such as used cooking oil (UCO), connecting fuel producers, aggregators, and feedstock suppliers across a global network. It uses machine learning to optimize trade routes and pricing while handling counterparty matching, logistics, payments, traceability, and regulatory compliance for buyers and sellers of renewable fuel feedstocks.

5 investors

WOTA develops small-scale decentralized water recycling systems and autonomous water treatment control systems. The company designs water processing technology for distributed use.

5 investors

Zeitview provides advanced inspection software for high-value infrastructure assets including solar, wind, properties, telecom, and utility infrastructure. The platform uses aerial imagery and inspections to help operators monitor asset condition and performance throughout their lifecycle, enabling better decision-making and cost efficiency in renewable energy and sustainable infrastructure.

5 investors

ZwitterCo develops zwitterionic anti-fouling membranes that resist organic fouling for filtration of industrial wastewater and process streams. Its products serve dairy and food & beverage processors, biotechnology companies, grain processing/biorefining, and landfill leachate treatment for water reuse and product recovery.

5 investors

6K uses microwave plasma technology (Unimelt) to produce engineered materials, including battery cathode materials and metal powders for additive manufacturing, with an emphasis on sustainable processes. It serves industries such as additive manufacturing, renewable energy, aerospace, and consumer electronics, operating innovation labs in Massachusetts and a production facility in Pennsylvania.

4 investors

Acuva Technologies designs and manufactures UVC LED water disinfection systems for residential, recreational, commercial, and remote water treatment applications, using its IntenseBeam optical lensing technology for mercury-free purification. Founded in 2014 near Vancouver, Canada, the company and its brand are now part of Watersprint's product portfolio following a 2024 acquisition of its intellectual property.

4 investors

Adept Materials develops a moisture-control material technology that provides directional vapor control, humidity regulation, and temperature management, applied as coatings, films, and overlays. Spun out of a Brown University physics lab, its technology targets buildings, apparel, packaging, and healthcare applications with a focus on durability and energy efficiency.

4 investors

AeroShield is a materials science company that developed an ultra-clear silica aerogel, originating from research at MIT, aimed at improving the energy efficiency of buildings. It targets the building materials industry with insulation technology for the built environment.

4 investors

AiDASH uses satellite imagery and AI to help industries become more resilient, efficient, and sustainable. It provides these capabilities to sectors focused on operational resilience and sustainability.

4 investors

Algenesis Labs develops plant-based, biodegradable polyurethanes and polymers designed to replace petroleum-based materials while retaining durability. Its two chemical systems target manufacturers seeking non-toxic, compostable alternatives for their products.

4 investors

AlumaPower develops firm, dispatchable power technology aimed at addressing shortfalls in reliable 24/7 electricity for demand from AI data centers, re-industrialization, and electrification. It positions itself as a cleantech company offering an alternative to variable renewables and traditional fossil-based power sources.

4 investors

Amber gives Australian households direct access to wholesale electricity pricing so they can shift usage to cheaper, greener times and automatically export stored battery and EV energy for higher earnings. It charges a flat subscription fee rather than marking up energy, positioning itself as a consumer energy service focused on the renewable transition.

4 investors

Amped Innovation designs and manufactures off-grid solar systems and appliances for solar-rich environments, building its own circuits, software, and mechanical components. It serves families and small businesses through distribution partners across Africa and Asia.

4 investors

Ampersand builds electric motorcycles, battery packs, swap stations, and AmperOps fleet management software for motorcycle taxi (boda) drivers in Africa, operating a battery-swapping network for commercial e-motos. It serves drivers in markets including Rwanda and Kenya, offering electric two-wheeler transport that costs less to power than petrol.

4 investors

Amprius develops and manufactures silicon-anode lithium-ion battery cells that deliver high energy density. The company operates in the advanced battery and energy storage industry.

4 investors

Arbor develops power systems intended to provide reliable, emissions-free baseload power at large scale. Founded by engineers with backgrounds in rocket engines, turbomachinery, and high-performance power platforms, the company applies aerospace engineering methods to clean energy generation.

4 investors

Assembly OSM develops modular construction technology and methods to make urban development scalable and sustainable, enabling rapid high-rise building assembly.

4 investors