Cleantech Startups

Scope Zero offers the Climate Savings Account (CSA), an employer-provided benefit that helps employees lower the upfront cost of home and transportation upgrades to reduce utility bills, fuel costs, and carbon emissions. The platform provides personalized purchase guidance, a marketplace of eligible products, access to rebates and incentives, and savings tracking.

4 investors

SensorSuite partners building system specialists and utility executives to modernize building systems in support of energy grid transition. The company serves utilities and buildings sectors through smart building and grid optimization technology.

4 investors

Shoreline offers a software platform for planning, building, and operating offshore and onshore wind farms, providing operational visibility, resource and work planning, and repair scheduling. It serves wind farm developers, operators, OEMs, EPC contractors, and service providers.

4 investors

Itron provides technology and solutions for utilities and cities to manage energy and water, including grid planning, communication networks, distributed energy resource management (DERMS), and advanced metering infrastructure (AMI). It serves utility and municipal customers in over 100 countries with connected endpoint devices and data analytics for grid operations.

4 investors

SIRC develops IoT sensor devices and cloud platform solutions for energy monitoring and digital transformation. The company's core SIRC device enables contactless measurement of electrical current, power, angle, and frequency across industrial equipment and infrastructure.

4 investors

Sistema.bio manufactures prefabricated, modular tubular biodigesters that convert animal dung into biogas for small and medium-sized farms. Its product range serves operations from 2 to 200+ cows and includes biogas cookstoves, water heaters, burners, and related appliances and spare parts.

4 investors

Sizable Energy develops offshore pumped hydro energy storage technology that uses reservoirs and reversible pump-turbines to store energy at sea. The company serves renewable energy operators and grid operators seeking long-duration energy storage solutions.

4 investors

Skyven develops solar thermal collectors and energy solutions for large manufacturing facilities to reduce industrial heating costs and carbon emissions. The company partners with manufacturers to improve competitiveness through thermal energy innovation.

4 investors

SOLASTA Bio develops peptide-based, precision-targeted biological insecticides that control specific pest insects while remaining non-toxic to non-target species such as pollinators, wildlife and humans. Its crop protection solutions are aimed at growers and agri-businesses as a biodegradable alternative to traditional chemical insecticides.

4 investors

Solcoa produces rare earth metals using proprietary chemistry for use in electric motors, generators, and speakers. The company operates production facilities scaling from 10 tonnes to hundreds of tonnes annually.

4 investors

Splight builds AI-driven, software-based advanced transmission technology that combines real-time data to unlock additional usable transmission capacity and improve grid reliability for transmission owners, renewable generators, and large loads. Its product addresses grid congestion and interconnection delays by turning generators, batteries, and loads into fast-responding reliability assets across energy systems.

4 investors

Stem provides an integrated software suite, PowerTrack, for monitoring, developing, deploying, and operating solar and energy storage assets, serving asset owners, operators, and stakeholders in the clean energy sector. The company supports its software with professional and managed services and operates in over 50 countries.

4 investors

Still Bright develops hydrometallurgical copper extraction technology that replaces traditional smelting, aiming to recover copper and other critical metals more efficiently and with less pollution. It targets the mining industry and U.S. domestic copper production, addressing projected copper shortages.

4 investors

StoreDot develops extreme-fast-charging lithium-ion EV batteries based on silicon and organic-inorganic chemistry combined with nanotechnology and AI, designed to charge in minutes and manufacturable on standard production lines. The company targets electric vehicle makers and the broader mobility market.

4 investors

Sun King designs, installs, and finances off-grid solar products—including solar lanterns, solar home systems, and multi-kilowatt inverters—for households and businesses without reliable grid access. It offers flexible pay-as-you-go installment financing (EasyBuy) and serves customers across Africa, Asia, Asia-Pacific, and Latin America.

4 investors

Supercritical develops a high-pressure, efficient electrolyser technology for producing green hydrogen, enabling industrial transition away from fossil fuels. The company serves industries requiring hydrogen for chemical production, refining, and energy applications.

4 investors

Swift Solar develops high-efficiency solar cells using perovskite-silicon tandem technology combined with silicon heterojunction, aiming for panels that produce up to 1.5x the power of conventional silicon. It targets data centers, space, defense, and utility-scale, commercial, and residential solar markets, with manufacturing based in the US.

4 investors

Synergi operates a platform that connects and optimizes distributed energy resources (EVs, solar, heat pumps, batteries) to balance electricity supply and demand across households and the grid. It serves consumers seeking to reduce energy bills and utilities looking to aggregate flexibility from residential devices.

4 investors

TELO Trucks builds the MT1, an all-electric compact pickup that combines pickup-truck utility with EV range and advanced safety technology in a subcompact footprint. The vehicle features a configurable bed and midgate, seating for up to eight, and an estimated 350-mile range aimed at both urban driving and hauling.

4 investors

Tessol develops cold chain technology solutions for temperature-controlled storage and distribution, covering secondary and tertiary distribution vehicles, cold rooms, and home-delivery frozen boxes and bags. Its products serve businesses needing to transport fresh and frozen food across a temperature range of -25°C to +25°C while reducing fuel use and emissions.

4 investors

Thermulon develops and scales the production of high-performance, fire-safe aerogel insulation materials aimed at reducing the carbon footprint of buildings. The company operates from a laboratory in West London and serves the construction sector with its novel aerogel process.

4 investors

Tidal Vision produces chitosan-based solutions for applications including water treatment, agriculture, and material science.

4 investors

TOBE develops isothermal electrolysis technology for industrial-grade hydrogen production with >92% efficiency, using a pulsed waveform architecture that eliminates waste heat without rare earth materials. The company serves industrial hydrogen production customers seeking to reduce costs and environmental impact compared to conventional electrolysis methods.

4 investors

TAE Technologies develops hydrogen-boron (aneutronic) fusion power using a beam-driven Field-Reversed Configuration reactor design, aiming to deliver utility-scale fusion electricity to the grid in the early 2030s. Through its subsidiaries, the company also works on grid energy storage solutions and cancer treatment technologies.

4 investors