Cleantech Startups
5,220 companies tagged Cleantech, with their investors and founders.
Popular Power is a software platform that provides performance monitoring and analytics for distributed solar generation and battery energy storage (BESS) operations. It helps solar operations and O&M companies detect performance issues, prioritize high-impact alerts, track SLA commitments, and protect revenue.
3 investors
Elevation provides solar energy systems, battery storage, and real-time energy monitoring for single-family rental (SFR) portfolios and small commercial property owners. It focuses on portfolio-scale, repeatable deployments intended to lower operating costs, generate energy-related revenue, and meet ESG objectives.
3 investors
PowerGen Renewable Energy provides solar and battery power systems for businesses and communities across Africa, offering flexible delivery models such as pay-as-you-go, PPA, lease-to-own, and full ownership with no upfront cost. The company installs and monitors clean energy systems to reduce downtime and energy costs.
3 investors
Powerhouse Dynamics provides IoT-based platforms (SiteSage and Open Kitchen) for remote monitoring, automation, and energy and equipment management in multi-site foodservice and retail facilities. Its OEM-agnostic solutions serve commercial operators, equipment manufacturers, distributors, and service providers to reduce energy costs and operational waste.
3 investors
Powerline builds AI-driven digital twins of battery energy storage projects, using market signals, bottom-up simulations, and operational data to analyze past operations, surface trading insights in real time, and forecast market conditions. It targets operators of battery storage assets in the energy market.
3 investors
Powernaut offers a Virtual Power Plant platform that lets energy retailers and independent power producers connect and aggregate distributed energy resources, forecast and optimize their portfolios, and trade across energy markets from a single workspace. It serves energy leaders, IPPs, and energy retailers across Europe.
3 investors
Praan builds air purification technology aimed at reducing particulate matter and providing cleaner air. It offers products for homes, commercial spaces, and industrial spaces.
3 investors
Presso builds AI-powered robotic machines for on-demand, low-carbon express garment care, offering a wet-cleaning alternative to traditional dry-cleaning for professional laundry and garment care operators. The machines are hand-assembled and sold within the continental U.S.
3 investors
Prosaris makes an ultrasonic detection system combining a handheld MEMS-microphone sensor (the "Puck"), a mobile app, and a cloud dashboard to locate compressed air/fluid leaks, electrical faults, and mechanical integrity issues in industrial facilities. Its platform helps maintenance teams log, prioritize, and resolve observations while quantifying wasted energy and cost, serving customers from local businesses to Fortune 500 companies.
3 investors
Qdot develops custom aerothermal and thermal management technologies, including heat exchangers, battery packs, and hybrid propulsion systems, using additive manufacturing and AI-driven design. A spin-out from the University of Oxford, it serves aerospace, defence, fusion energy, data centre, motorsport, and automotive customers.
3 investors
Quantified Energy develops autonomous drone-based electroluminescence mapping and AI/computer-vision analytics to inspect and diagnose the health of solar PV modules and systems. It serves solar asset owners and investors looking to optimize performance and reduce investment risk, operating across Southeast Asia, China, and the EU.
3 investors
Quiver provides emissionless same-day and on-demand delivery services in London for e-commerce brands, with options including immediate, next-day, timed-window, exchange, and return slots. It also offers merchants real-time inventory visibility and delivery tracking.
3 investors
Rabot Energy provides German households with a dynamic electricity tariff that passes through hourly wholesale market prices, offering 100% certified green power along with an app for tracking consumption, smart-charging EVs, and controlling devices to shift usage to cheaper hours. It also offers fixed-price and price-capped tariff options plus add-on products like a plug-and-play battery storage system and smart meters.
3 investors
Realta Fusion develops fusion energy technology to generate zero-carbon electricity and industrial process heat for global use. The company aims to decarbonize industrial and energy sectors worldwide through economic fusion-based power generation.
3 investors
Redaptive provides fully funded energy infrastructure upgrades, offering structured financing, turnkey execution, and measurable savings verification for enterprises. It serves large industrial, healthcare, and real estate organizations with distributed, complex facility portfolios.
3 investors
Redox Blox develops thermochemical energy storage systems that store thermal energy in less space and release superheated air for industrial heating processes. The systems serve manufacturing and industrial facilities seeking to decouple heating operations from grid electricity availability.
3 investors
Regascold is a greentech company that recovers cold energy from the regasification of liquefied gases using its patented technology. It aims to make industrial cooling processes more sustainable and cost-effective while reducing COβ emissions and energy costs.
3 investors
Renew Risk provides science-based risk modelling and analytics focused on renewable energy infrastructure, covering financial risk, engineering failures, and natural catastrophe exposure. Its products serve insurers, developers, and financiers who need to quantify, price, and manage risk to renewable energy assets.
3 investors
Renewable Metals develops an alkali-based recycling process that recovers lithium, nickel, cobalt, and other critical minerals from end-of-life lithium batteries for reuse in new battery manufacturing. The company serves battery recyclers and participants in the global lithium battery supply chain.
3 investors
Renova, Inc. (ζ ͺεΌδΌη€Ύγ¬γγ) is a Japanese company. The page shown is a website terms-of-use notice and does not describe the company's actual business activities.
3 investors
Reonic is an AI-native platform for renewable energy installers that combines CRM, solar and heat pump system design, quoting with digital signatures, installation management, and a mobile field app in one system. It also offers AI agents and services such as photogrammetry, grid registration, and funding workflow support for residential, commercial, and enterprise solar, storage, EV charging, and heat pump projects.
3 investors
Resilience deploys residential solar and storage, aggregating homes into a single dispatchable grid resource that supplies power to the AI/data center economy while lowering or eliminating energy costs for working families. It operates in the US through partnerships with local CDFIs, land banks, foundations, and city partners, structuring capacity for bilateral contracts, virtual power plant participation, or capacity market revenue.
3 investors
Retein develops a patented molecular separation technology, based on bio-inspired stabilized channel proteins, to recover high-purity resources such as clean water and lithium from water sources. Founded from research at Chalmers University of Technology, it targets industries seeking sustainable recovery of metals, nutrients, and clean water.
3 investors
Rewbi rebuilds the electrical grid by financing, optimizing, and maintaining clean energy sources, particularly battery systems for grid stabilization. The company serves the power industry to reduce emissions and increase grid reliability.
3 investors