Cleantech Startups

ElectronX (EXI) operates a CFTC-regulated power derivatives exchange and clearinghouse offering trading products tied to intraday electricity price fluctuations, aimed at risk management and volatility hedging. It serves energy market participants including renewable power developers, data centers, battery operators, and financial firms such as hedge funds and market makers across the United States.

3 investors

Elonroad develops conductive charging systems for electric vehicles that charge while driving or parked, using electrified road tracks and road sensor data. The vehicle-agnostic, retrofittable technology targets commercial EV operators such as ports and fleet operations.

3 investors

Emrgy develops a redesigned hydropower technology that lets customers generate continuous clean energy from existing water flows, supporting decentralized grid power independence. The company positions its approach as an alternative to traditional scaled-down hydropower systems.

3 investors

enaDyne develops a plasma-based CO2 recycling technology that reduces emissions while producing sustainable raw materials. It works with companies to make climate action economically viable.

3 investors

EnergySage operates an online marketplace where consumers and businesses can compare and shop for clean energy products such as solar panels, battery backup power, heating and cooling systems, electric vehicles, and smart home technology. The platform also offers clean energy financing and publishes market reports like its Solar & Storage Marketplace Report.

3 investors

EnergyX is a direct lithium extraction technology company that develops proprietary systems (GET-Lit™ and SoLiS) to recover and refine battery-grade lithium from brine faster and with less water use than traditional evaporation methods. It operates across the Lithium Triangle in South America and the United States, working with partners to supply lithium at commercial scale for battery supply chains.

3 investors

Enervee runs online product-comparison marketplaces that guide households toward energy-efficient and carbon-saving appliances, using its Enervee Score to rank products by efficiency. It partners with utilities, states, cities, and corporations, and offers financing tools to help consumers afford efficient appliances.

3 investors

Enflow develops technology to produce sulfide-based solid electrolytes in fine spherical form, researching, developing, and manufacturing materials for next-generation batteries alongside domestic partner companies. The company focuses on advanced battery materials in South Korea.

3 investors

EnginZyme develops a patented enzyme immobilisation technology to create stable, bespoke biocatalysts for use in multi-step enzymatic reactions. The company targets chemical and manufacturing companies seeking cleaner, less energy-intensive biomanufacturing processes.

3 investors

Engrate offers an API layer for European energy markets, providing pre-built integrations for cost-of-energy calculations (power tariffs, transfer fees, energy tax) and Balance Responsible Party (BRP) services such as settlement and schedule management. It serves energy companies and developers, covering Swedish DSOs for cost calculations and Germany, the Netherlands, and Sweden for BRP services, with an MCP server for AI-assisted integration.

3 investors

enSights is an AI energy business management platform that unifies performance, financial, contractual, and operational data into a single intelligence layer for solar and storage portfolios. It serves asset owners and IPPs, O&M providers, and OEMs/integrators to detect performance losses, prioritize issues by financial risk, and produce audit-ready reporting.

3 investors

EnsiliTech develops ensilication technology, a silica-based method to stabilise vaccines and biopharmaceuticals so they can be stored and transported without refrigeration. The company serves the pharmaceutical and biotech industry and originated from research at the University of Bath.

3 investors

Enurgen provides energy yield modeling software for solar projects, helping large-scale solar energy providers reduce uncertainty in performance forecasts and protect asset value across their portfolios. The platform uses high-fidelity irradiance modeling and sub-hourly resolution to improve accuracy of yield estimates from site design through operations.

3 investors

enVerid develops Sorbent Ventilation Technology (SVT) and HVAC Load Reduction (HLR) systems that filter contaminants from indoor air, reducing the outside air ventilation needed and lowering the energy use, cost, and carbon emissions of building HVAC. The technology is sold through HVAC manufacturer partners and used in commercial, academic, and government buildings.

3 investors

Enzinc develops zinc micro-sponge anode battery technology for energy storage, working to bring production-ready battery systems to market through battery manufacturing partners. The company operates R&D and manufacturing facilities in the San Francisco Bay Area (Richmond and Oakland, California).

3 investors

ev.energy operates a platform that helps utilities and energy retailers run distributed energy resource (DER) flexibility programs across EVs, solar, and batteries, while also giving EV drivers and solar/battery owners tools to coordinate their home energy use to earn money and lower costs. It runs 55+ live programs across North America and Europe, serving both business (utilities/retailers) and residential customers in the US, UK, and Europe.

3 investors

Evercloak develops graphene-based dehumidification technology for energy-efficient cooling and HVAC systems. The company focuses on reducing energy use and humidity control for building cooling applications.

3 investors

Fuse Energy develops fusion energy technology, with work spanning hardened electronics and radiation testing (HEART) and recycling of radioactive waste, aiming to provide an on-demand clean energy source. It brings together a team across engineering, fusion science, energy policy, and manufacturing.

3 investors

Fairbrics develops circular manufacturing processes that use captured waste CO2 as a feedstock to produce textile fibers, reducing reliance on fossil fuels. Founded in 2019 by scientists applying molecular chemistry, the company targets the fashion and textile industry.

3 investors

FIDO Tech develops smart water technology to detect and analyze leaks in water networks, serving water utilities. It operates globally, including in the USA.

3 investors

FlexeCharge develops software for EV charging energy and load management, helping Charge Point Operators and solution providers address grid constraints, reduce energy costs, and create new revenue streams. A 2019 spin-off from the 'carpeDIEM' research project, it serves customers across Europe from the Baltic nations to the UK.

3 investors

Flux Hybrids develops plug-in hybrid powertrain kits for vehicles, available as second-stage manufacturer upfits or aftermarket installations. The company serves auto dealerships, rental agencies, delivery fleets, ride-sharing operators, and public transit systems seeking to improve fuel efficiency and reduce emissions.

3 investors

Flux Marine designs and manufactures all-electric outboard motors and electric propulsion systems for boats, selling to companies and individual customers. The company operates a manufacturing facility in Rhode Island, USA.

3 investors

Focal develops heating technology focused on balancing communicative design, energy efficiency, operational simplicity, and integration to improve comfort. The available page content offers only a customer-development testimonial and does not clearly describe the specific product or target market.

3 investors