Cleantech Startups

Guangdong Jinsheng New Energy is a Chinese provider of lithium-battery recycling and reuse solutions, focused on comprehensive recovery of retired lithium batteries from EV power, 3C, energy storage, and IoT applications. It produces battery-grade materials such as lithium carbonate, manganese/cobalt/nickel sulfates, and ternary cathode materials and precursors from recycled sources.

2 investors

BattGenie develops software for battery management systems, using physics-based battery models to optimize charging, state-of-charge and state-of-health estimation for lithium-ion and next-generation batteries. It works with hardware vendors, OEMs, and battery manufacturers to improve energy storage efficiency and safety.

2 investors

Boomerang is a platform or service focused on carbon capture and climate research, supporting mitigation of industrial emissions through research funding and donations to environmental initiatives.

2 investors

Bay West provides environmental consulting, site investigation, remediation, industrial services, and emergency response solutions. It serves commercial, industrial, municipal, state, and federal clients across the Upper Midwest and nationally in the United States.

2 investors

Beebop provides an infrastructure layer that sits between the power grid and distributed energy devices, offering real-time monitoring, automated dispatch control, and forecasting to orchestrate flexible assets such as household batteries, rooftop solar, and EVs. It serves energy traders, hardware OEMs, and U.S. utilities managing distributed assets and virtual power plants across UK, US, and European markets.

2 investors

Beem Energy designs and assembles solar energy products in Nantes, France, including solar roof systems (3–9 kWc) and home batteries, paired with an app to track production, self-consumption, and savings. The products target households seeking to produce, store, and manage their own energy across Europe.

2 investors

Believ provides a fully funded, end-to-end EV charge point deployment service for UK local authorities, covering charge point strategy, site planning, installation, and maintenance without reliance on public LEVI funding. It offers the full range of charging speeds and works with partners such as Virgin Media O2 to install charge points across the UK.

2 investors

Benchmark Labs develops AI-powered, asset-specific weather forecasting solutions for agriculture, energy, and insurance sectors. The company uses machine learning and hyperlocal environmental data to provide point-specific forecasts that improve decision-making for fixed-asset verticals.

2 investors

Besana supplies renewable electricity and gas to residential communities, aiming to reduce costs, avoid incidents, and provide greater transparency to residents. It offers savings studies, digital contracts and invoices, and a single management platform.

2 investors

BHI Energy provides energy infrastructure services including renewables (solar and wind maintenance), specialty welding, and industry training. It serves the energy sector with skilled workforce and technical services.

2 investors

Binks is a fashion brand that designs and sells women's clothing, primarily top wear including blouses, dresses, and kurtas, using sustainably sourced fabrics and a data-driven approach to sizing. The company uses 3D body measurements to create accurate size charts and offers a wide range of colors in contemporary silhouettes.

2 investors

BioBTX develops ICCP technology that converts end-of-life plastic waste and biomass into renewable aromatics (benzene, toluene, and xylenes) for use as drop-in chemical building blocks in the chemical industry. Based in the Netherlands, it is building PETRA, a commercial-scale plant in Delfzijl, and licenses its technology for circular aromatics production.

2 investors

BiocSol develops microbial-free biopesticides that combine active compounds with complementary mechanisms of action to help farmers protect crops as an alternative to synthetic pesticides. The company originated from plant health and microbiology research at UCLouvain, initially targeting potato crops in Wallonia, Belgium.

2 investors

BioLite sells off-grid energy products including solar-powered string lights that double as a portable USB charger, designed for camping, backyards, and other outdoor use without access to an outlet. Its products use built-in monocrystalline solar panels and rechargeable battery hubs.

2 investors

Biosimo produces bio-based platform chemicals — with bio-acetic acid as its flagship, plus acetaldehyde, ethyl acetate, and bio-VAM — by converting bioethanol using a proprietary heterogeneous catalyst in a single continuous fixed-bed reactor step. The company, an ETH Zurich spin-off, sells to industries including agriculture, automotive, construction, home care, and cosmetics, aiming to compete at fossil-fuel economics.

2 investors

Birch Biosciences develops enzyme-based plastic recycling technologies using green chemistry and machine learning to transform plastic waste into reusable material. The company targets the plastic resin market with solutions for industrial and commercial recycling applications.

2 investors

Blowind develops high-power charging solutions for heavy transport, combining power electronics, systems engineering, and advanced technologies focused on efficiency and reliability for electric mobility.

2 investors

Blue Planet Energy develops energy storage systems used in homes, businesses, and communities to enable clean, reliable, fossil-fuel-free power. The company positions its products as premium energy storage solutions supporting energy independence.

2 investors

Blue World Technologies develops and manufactures methanol fuel cell components and systems as an alternative to combustion engines and diesel generators, handling R&D, materials, component production, and system integration in-house. Its fuel cells target hard-to-abate sectors such as the maritime industry and heavy-duty transportation, providing onboard power generation and larger power and propulsion systems.

2 investors

BlueConduit provides AI-driven predictive modeling software that helps water utilities and cities locate lead and galvanized service lines and assess water main risk, supporting inventory classification, replacement planning, and regulatory compliance. It serves community water systems across the United States, integrating with Esri ArcGIS and working with the EPA and state regulators.

2 investors

Bluemethane develops technology to measure, prevent and recover methane emissions from liquid systems such as wastewater treatment, anaerobic digestion and reservoirs. Its systems integrate with existing infrastructure to reduce emissions and support regulatory and net zero targets.

2 investors

Bluestem Biosciences uses an industrial fermentation process with an engineered yeast strain to convert American corn into 3-hydroxypropionic acid (3-HP) and other platform chemicals, offering a domestic alternative to petroleum-based production. Its business model retrofits existing U.S. bioethanol facilities to produce these chemicals at commercial scale, targeting American manufacturing and agricultural supply chains.</parameter> <parameter name="founders">[]

2 investors

Blume Equity is a European investment firm focused on climate technology, partnering with growth-stage companies working on climate and sustainability solutions.

2 investors

Bohr Energie offers software for energy producers to monitor production and profitability in real time, track market conditions, and generate custom reports with in-house production and price forecasting models. The platform includes real-time alerts on sales opportunities and negative prices, REMIT reporting, and simplified billing.

2 investors