100 top Renewable Energy companies and startups in April 2025Powered by the F6S community
- Kommu .
- Apr 20
- 29 min read
100 top Renewable Energy companies and startups in April 2025
Powered by the F6S community
Apr 1, 2025
RENEWABLE ENERGY COMPANIES SNAPSHOT
We're tracking Sunly, Sun King and 2,031 more Renewable Energy companies from the F6S community. Renewable Energy forms part of the Energy industry, which is the 16th most popular industry and market group. If you're interested in the Energy market, also check out the top Energy & Cleantech, Oil & Gas, Recycling, Energy Efficiency or Cleantechcompanies.
Together we power the future
Tallinn, Estonia
$317.3m raised fromMirova and 5 moreSee all investors
Powering access to brighter lives in Africa, Asia, and beyond
Nairobi, Kenya
Founded 2007
$77m raised fromLeapFrog Investments and 23 moreSee all investors
Building the Future of Energy
Tualatin, United States
Founded 2010
$225m raised fromKohlberg Kravis Roberts and 6 moreSee all investors
Ammonia-to-power for a sustainably-driven future
Amogy is a sustainable energy startup, working on a novel carbon-free energy system using ammonia as a renewable fuel. Amogy's innovative solution will enable the decarbonization of ground/sea/air transportations, accelerating our journey towards the Net Zero Economy.
Brooklyn, United States
Founded 2020
$56m raised fromSeoul IP and 46 moreSee all investors
Moment Energy provides affordable, performant, and reliable energy storage.
Moment Energy provides affordable, clean, and reliable energy storage by repurposing retired EV batteries. EV batteries still have an average of 80% original capacity left when retired from the car, but usually end up on shelves because they are much cheaper to store than recycle. These batteries can deliver an additional +10 years of service in energy storage applications and there is an overwhelming influx of end-of-life lithium batteries as millions of EVs are retired over the next few years.Moment Energy is working with most major Electric Vehicle companies including Mercedes and Nissan ...
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Vancouver, Canada
Founded 2020
$21.2m raised fromDepartment of Energy and 20 moreSee all investors
Hydrostor is a developer of Advanced Compressed Air Energy Storage
Toronto, Canada
Founded 2010
$2b raised fromU.S. Department of Energy and 23 moreSee all investors
Energy Storage Startup with proprietary zinc chemistry
Eos is a provider of DC systems (battery, BMS, racks and controls) to support industrial grid and distributed energy storage systems.
Edison, United States
Founded 2008
$400m raised fromU.S. Department of Energy and 13 moreSee all investors
Accelerating Environmental Transition.
Saint Paul, United States
Founded 2012
$150m raised fromBedrock Industries ManagementCoSee all investors
The low-carbon car of the future is the one you're already driving
Houston, United States
$50m raised fromCottonmouth VenturesSee all investors
Leading Energy Storage Technology Solutions
Durham, United States
Founded 2009
$175m raised fromVitol and 9 moreSee all investors
Inventing sustainable materials to build the world.
Meet Ryann that works here
Redwood is developing a fully closed-loop, domestic supply chain for lithium-ion batteries. Our team manufactures critical battery components using as many recycled batteries as possible — localizing a 50,000-mile global supply battery chain on a single site.
Carson City, United States
Founded 2017
$2b raised fromU.S. Department of Energy and 31 moreSee all investors
A New Breed of Battery. All-Solid-State Batteries by Solid Power.
Meet Ed that works here
Louisville, United States
Founded 2011
$55m raised fromDepartment of Energy and 10 moreSee all investors
Our mission is to enable humankind to access clean, safe & reliable energy.
Muenchen, Germany
Founded 2019
$2.7m raised fromEuropean Innovation Council and 32 moreSee all investors
Advanced materials development and manufacture for Li-ion Battery electrode
Meet Alexander that works here
We are a startup company based in the Unit DX incubator in Bristol UK, developing materials for the next generation of low-cost batteries.
We welcome requests for partnership, collaboration, and product deployment.
Bristol, United Kingdom
Founded 2016
$21.1m raised fromElbow Beach Capital and 21 moreSee all investors
The future of intelligent energy: not someday, but today.
Meet Nicolai that works here
Designer and manufacturer of solar panels designed to make renewable energy accessible to everyone. The company digitizes the opaque solar market by providing personalized installation of solar systems that configures exactly the right solar panels based on customer information and all available technologies, enabling consumers to save money quickly and easily with green energy.
Berlin, Germany
Founded 2017
$375.1m raised fromSoftBank Vision Fund and 40 moreSee all investors
Developer of long-duration storage systems
Meet Richard that works here
Highview Power is a designer and developer of true long duration energy storage solutions for utilities and distributed power systems. The company’s proprietary technology uses liquid air as the storage medium and its custom designed Liquid Air Energy Storage (LAES) solutions can deliver anywhere from 10MW/40MWh to more than 200MW/1.2GWh of energy. LAES has been developed using proven components from mature industries to deliver pumped-hydro capabilities without geographical constraints and it can be configured to convert waste heat and cold to power.
London, United Kingdom
Founded 2016
$46m raised fromSumitomo Heavy Industries and 8 moreSee all investors
Leading society into a low carbon future
Toronto, Canada
$50m raised fromHy24See all investors
Harvard spinout commercializing extreme-fast-charging batteries for EVs
Meet William that works here
Adden Energy is a Harvard spinout commercializing breakthrough solid-state battery technology originally published in Nature. Electrification of vehicles is one of the most meaningful steps humankind can take in the on-going fight against climate change. Yet, current lithium-ion batteries cannot deliver the performance needed to make electric vehicles accessible to the general public. Adden Energy’s batteries offer 10x improvements in two of the most critical performance metrics holding back vehicle electrification – charge-rate and cycle lifetime. By delivering next-generation batteries that ...
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Waltham, United States
Founded 2021
$5.2m raised fromPrimavera Capital and 6 moreSee all investors
Restore our climate with technology that removes carbon dioxide from air
Meet Steve that works here
Squamish, Canada
Founded 2009
$10m raised fromCanadian Minister of Energy and Natural Resources and 10 moreSee all investors
"Metallizing energy”, storing energy in zinc metal
a. e-Zinc is a Canadian-based startup that has developed a breakthrough technology Long Duration Energy Storage (LDES) for at low cost. This technology consists of an electrochemical cell that allows storing energy in low-cost zinc metal. This novel approach decouples power from energy capacity at a low cost, which drives the feasibility and flexibility for a plethora of LDES applications. It has the potential to compete with current and new LDES solutions in price while also being an industry leader in total capacity scaling and deployment. As such, e-Zinc has the potential to be one of the l...
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Toronto, United States
Founded 2012
$13.8m raised fromSilicon Valley Bank and 26 moreSee all investors
Batteries to provide baseload power all-year round from wind & solar power.
VoltStorage is developing ultra-low cost long duration batteries based on the proprietary Iron-Salt chemistry.
The Iron Salt battery is based on the Redox Flow battery technology, employing only abundant and safe materials, that can be obtained all over the world with no dependencies (mostly iron, salts and water). These batteries are not just very robust (withstanding ambient temperatures up to 45°C without cooling and no capacity loss after 1,000s of cycles) and safe (not flammable, not toxic), but also low cost (<30 /kWh, up to 90% lower cost than current battery systems). And it can be sc...
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Muenchen, Germany
Founded 2016
$32.2m raised fromEuropean Investment Bank (EIB) and 18 moreSee all investors
SaaS for monitoring and control of C&I size energy assets in every level.
WHAT WE DO:1. Provide SaaS business model, white labeled to energy companies globally.2. Asset monitoring and control platform3. From on-site asset management to building portfolios for trading4. Fusebox is not a trader!5. Modular software easy to connect existing infrastructure and to 3rd party service providers.
HOW WE DO IT:1. Software and hardware for easy connection, monitoring, packaging and controlling of the assets 2. Baseline models, prediction models, dispatch, dis-aggregation, automated bidding, etc.3. Build TSO connections for customers in need of access to different ene...
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Tallinn, Estonia
Founded 2019
$10.2m raised fromSmartCap and 12 moreSee all investors
Building the UK’s first clean, multi-energy refuelling hubs for vehicles
Wakefield, United Kingdom
$126.5m raised fromQuinbrook Infrastructure PartnersSee all investors
Wave Power. To Power the Planet.
Meet Kevin that works here
CorPower Ocean pioneers innovative wave energy technology, efficiently harnessing ocean waves for clean electricity. Our wave energy converter (WEC) stands out for exceptional reliability and survivability in challenging sea conditions, coupled with unprecedented power capture. It generates over 5 times more electricity per ton than competitors, revolutionizing cost-effectiveness in ocean wave energy. This advancement makes wave energy a mainstream renewable, with predictable and stable production ensuring grid stability and reducing fossil fuel reliance. By displacing coal and gas and offsett...
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Stockholm, Sweden
Founded 2012
$6.3m raised fromPareto' and 7 moreSee all investors
Next Generation Carbon Fiber Composite Core Conductor
We manufacture high performance conductors for overhead lines
Huntington Beach, United States
Founded 2021
Raised fromQuanta Services and 9 moreSee all investors
There's no such thing as waste. There's just potential fuel.
Los Angeles, United States
Founded 2018
$10m raised frombp ventures and 7 moreSee all investors
GridBeyond transforms energy demand into opportunities
GridBeyond works with System Operators and utilities, as well as Industrial and Commercial organisation to build a shared energy economy that delivers sustainability, resilience, affordability and adaptability through energy intelligence and connectivity.For I&C organisations, GridBeyond simplifies the complex energy landscape with a single, unified platform. By connecting energy intensive equipment, embedded generation and storage to GridBeyond’s intelligent energy platform, Point, I&C are able to access energy markets, including grid balancing services, energy trading, capacity market and ...
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Dublin, Ireland
Founded 2007
$6.4m raised fromClaret Capital Partners and 10 moreSee all investors
The home geothermal company offering affordable geothermal installations
Meet Kathy that works here
Dandelion is a home geothermal company offering affordable geothermal installations that provide heating, cooling and hot water to homes by exchanging heat with the ground beneath them. Dandelion became an independent company in Spring 2017, after getting started at X , "the innovation engine of Alphabet."
Mount Kisco, United States
Founded 2017
Raised fromNGP Energy Technology Partners and 46 moreSee all investors
ZOLAR is the leading online solar company for residential homeowners
ZOLAR is the easiest way for residential home owners to purchase a solar and battery storage system including installation. We have developed the ZOLAR Offer Configurator, which is similar to a car configurator just for solar systems. A homeowner can interactively and without any technical knowledge configure an individual solar system and download a fixed price offer instantly. Through our automated design process, we make sure that the user can only select components that really work for his house. If he needs help our sales representatives are available right within the ZOLAR Offer Configur...
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Berlin, Germany
Founded 2016
$5.1m raised fromHeartcore Capital and 22 moreSee all investors
Portable fast charging stations for electric vehicles that go in your trunk
Meet Joshua, Christopher and Kevin that work here
SparkCharge makes a modular, portable charging unit that can charge an electric vehicle ultra fast, 1 mile every 60 sec. The compact chargers can be delivered to an electric vehicle owner on demand via Uber, Lyft, AAA or any service company.This creates a mobile on-demand charging infrastructure allowing EV to charge anywhere. SparkCharge is a scalable solution that ends EV range anxiety, and creates a charging infrastructure solution at a fraction of the cost, and a much faster implementation rate.
Buffalo, United States
Founded 2017
$7m raised fromCleveland Avenue and 15 moreSee all investors
Building the world's first fusion power plant
Everett, United States
Founded 2013
$120k raised fromY Combinator Summer 2014 and 14 moreSee all investors
Heliogen is a renewable energy technology company
Pasadena, United States
Founded 2013
$39m raised fromUS Department of Energy and 25 moreSee all investors
Advanced Wind Technologies
Nabrawind Technologies is dedicated to the design and development of advanced wind technologies for wind turbine components. Nabrawind is focused into alternative high added value disruptive technologies with three strategic drivers: drastic cost of energy reduction, solutions to break logistic barriers that currently restrain the onshore wind turbine growth and use of proven baselines technologies to provide robust and reliable components.
Pamplona, Spain
Founded 2015
$3.1m raised fromsodena and 5 moreSee all investors
Clean, compact & competitive hydrogen technology
Hydrogen Mem-Tech is a Norwegian company focused on developing technology for hydrogen separation. Founded in 2017 in Trondheim, Norway's tech capital, the company specializes in palladium membrane technology for capturing carbon dioxide and hydrogen separation. Their technology has found applications in various industries, including biogas and natural gas processing, and is used by clients like Agri-E and Clara Venture Labs.
The core of Hydrogen Mem-Tech's technology is a unique, ultra-thin palladium membrane that efficiently separates ultra-pure hydrogen from other molecules, boasti...
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Trondheim, Norway
Founded 2017
$612.7k raised fromInnovation Norway and 9 moreSee all investors
We are electrifying heavy industry with zero-carbon heat and power
Antora builds and deploys thermal batteries to power always-on industrial operations with low-cost renewable energy. Factory-built in the United States, Antora’s thermal batteries rapidly soak up the cheapest hours of renewable energy generation to store energy as heat in blocks of solid carbon. Energy is discharged as electricity and/or heat at the scale and temperatures that large industrial operations demand, enabling industrial facilities to decarbonize predictably and profitably.
Antora is electrifying global industry while supporting U.S. manufacturing jobs, curbing local air pollution,...
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San Jose, United States
Founded 2017
$5m raised fromCalifornia Energy Commission and 13 moreSee all investors
AI based SaaS simulation and optimization solutions for renewable industry
Meet Michael that works here
We provide full life cycle simulation and optimization solutions for project development and field operations management for wind energy assets.
Our software is distributed on SaaS terms to the worlds largest energy companies, OEMs and consultancy firms in the US, EU and APAC (Japan, Taiwan and Korea).
We have managed to develop an agent based scheduling algorithm and deploy it in a cloud environment with an architecture, which allows all our users to run complex business cases in hours with a very high level is accuracy, opposed to tedious excel based modelling taking weeks with a high leve...
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Stavanger, Norway
Founded 2014
$7.5m raised fromBlue Bear Capital and 5 moreSee all investors
AI-powered energy trading services
Meet Jürgen that works here
enspired is the leading global player for the commercial optimization of flexible energy resources, offering the most technologically advanced, data-driven, and fully digital trading services to unlock all value-adding use cases of power asset owners with minimum time-to-market.
We offer AI-powered Trading as a Service (TaaS) to support customers with and without market access in optimally commercializing the flexibility of their power portfolio, offering direct market access combined with highly advanced trading services based on reliable data, self-learning models, and cutting-edge technolo...
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Vienna, Austria
Founded 2020
$8m raised from360 Capital Partners and 12 moreSee all investors
Demand-side flexibility orchestrator for EVs, sites, and solar communities.
Hive Power's FLEXO is a SaaS Platform that helps Energy Retailers, Grid Operators, and E-Mobility players optimise renewable energy sources and flexible assets in residential, commercial, and renewable energy community settings.
With FLEXO, an energy retailer or energy service company can optimise the usage of multiple electric assets (EV, PV, storage, heat pumps) in a site for self-consumption and maximum cost savings. An energy retailer or grid operator can manage multiple sites (with electric assets) in a connected renewable energy community/neighbourhood to optimise for maximum self-cons...
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Lugano, Switzerland
Founded 2017
$5.4m raised fromEuropean Commission Research Agency and 12 moreSee all investors
Okra lets energy companies & utilities set up plug & play IoT microgrids
Meet Afnan that works here
We're a technology company that provides an IoT solution enabling local energy companies and utilities to setup plug & play solar microgrids. Okra microgrids are managed remotely via our software. Our microgrid tech is modular so systems can be scaled with increasing energy demand. Okra is the most effective way to deliver 24/7 productive power for the 1 billion people living without access to the grid.
Sydney, Australia
Founded 2016
$8.8m raised fromEDFI ElectriFI and 14 moreSee all investors
Sunfire is an electrolysis company that designs and manufactures systems
Meet Robert that works here
Sunfire has been named Global Cleantech 100 company for six consecutive years and is backed by leading strategic and financial investors such as Neste and SMS Group – global leaders in the renewable fuel and steel business. With more than 500 employees located in Germany and Switzerland and a well-established partner network, we realize large electrolysis projects to deliver on our promise: Creating a world without fossil fuels!
Dresden, Germany
Founded 2010
Raised fromOstsächsische Sparkasse Dresden and 25 moreSee all investors
SparkMeter is the leading provider of low-cost smart metering solutions.
SparkMeter has developed and brought to market a revolutionary smart metering platform for electricity systems in developing countries. To date, utilities have struggled to serve low-income individuals and remote areas with electricity. As a result, there are over 1.1B people in the world who have no electricity and another ~1B people who live with extremely intermittent and unreliable electricity service from an existing grid connection.
Our system is essential to operating a 24-hour supply of electricity because of our real-time monitoring capability, PAYG technology integrated with mobi...
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Washington, D. C., United States
Founded 2013
$5m raised fromHoneywell and 8 moreSee all investors
Decarbonizing the World's Legacy Buildings
Decarbonizing the World's Legacy Buildings
Kelvin’s technology reduces wasted energy, saves money, and enables pinpoint temperature control for apartments in legacy buildings.
New York City, United States
Founded 2011
$1.6m raised fromNational Science Foundation and 12 moreSee all investors
Powdered hydrogen solution for hydrogen storage and transportation
Meet Danny that works here
Electriq is spearheading the next generation of hydrogen solid carriers: Powdered Hydrogen. Our proprietary energy-rich Electriq Powder redefines hydrogen storage, transportation, and delivery in ambient and non-pressurized conditions, thus accelerating the adoption of hydrogen as the fuel of the 21st century.Electriq's goal is to democratize the use of hydrogen through an easy to use and safe hydrogen carrier that will lower the barriers of entry to the use of hydrogen. The powder, which offers the highest safety and ease of use profile for a hydrogen carrier, is energy rich and has cost co...
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Tirat Karmel, Israel
Founded 2013
$29m raised fromBaruch Halpert and 2 moreSee all investors
Pioneering the ZERO INVESTMENT of switching to solar
Meet Philip and Gusmantara that work here
We are an Indonesian renewable energy startup pioneering the zero-down method of switching to solar, for brighter and cleaner future of Indonesia. We believe that saving the earth should also save you money, not cost you more.
At the heart, we are a platform giving value add to roof owners and EPC contractors alike.
To roof owners, we are your one-stop-partner for your solar needs, from the beginning of the feasibility study, granting access to cheap green financing to switch to solar power, to equipment/vendor sourcing, construction/permit management and ultimately peace of mind that we...
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Jakarta, Indonesia
Founded 2018
Raised fromAgaeti Venture Capital and 16 moreSee all investors
Helping everyone use water and energy in more sustainable ways.
Bury St Edmunds, United Kingdom
Founded 2010
$2.8m raised fromIW Capital and 4 moreSee all investors
Driving mass adoption of rooftop solar in India
Meet Shreya that works here
SolarSquare Energy is a residential solar company that designs and installs solar rooftop panels for homes and commercial establishments. Trusted by more than 4000 homeowners and fortune 500 companies, SolarSquare strives to help customers save a minimum of Rs. 2000 on their monthly electricity bills.
Mumbai, India
Founded 2015
Raised fromGruhas Proptech and 17 moreSee all investors
Making solar even more sustainable
Oakland, United States
Founded 2022
Raised fromClosed Loop Partners and 6 moreSee all investors
Sublime is leading a transition to the future of cement manufacturing
Meet Glen that works here
Sublime Systems is leading a swift and massive transition to the cement manufacturing of the future. Sublime was founded at MIT by Dr. Leah Ellis and Prof. Yet-Ming Chiang, both respected experts in materials science, electrochemistry, and technology commercialization. Sublime’s breakthrough electrochemical process extracts reactive calcium and silicates from abundant raw materials at ambient temperature, to make ASTM C1157-compliant Sublime Cement™, avoiding the waste and pollution caused by ordinary portland cement’s use of high temperature kilns and limestone feedstock. Sublime's patented A...
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Somerville, United States
Founded 2020
Raised fromU.S. Department of Energy and 6 moreSee all investors
Branch makes it easy to save money by switching to 100% green energy
Branch Energy is a technology company that makes it easy for customers to lower their energy bills and carbon footprint while providing dramatically better customer experiences than incumbents. Branch was founded by a team of tech and energy nerds who saw the chance to make things better by changing the way we use energy. We’re more than a renewable energy provider—we’re champions for intelligent energy management. That means we harness the power of data analytics and smart home technology to help our customers save, reduce power consumption, and support clean energy projects. Simply put, it's...
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Houston, United States
Founded 2020
Raised fromZero Infinity Partners and 5 moreSee all investors
Developing a process that uses natural gas to generate electricity
London, United Kingdom
Founded 2013
$403.9k raised fromInnovate UK and 6 moreSee all investors
Carbon capture for semi-trucks
We're building a device that captures a semi-truck’s carbon emissions directly from the tailpipe. We'll sell the CO2 to end-users, and share that revenue with our customers, so our device will create a new revenue stream for our customers while reducing their emissions.
Livonia, United States
Founded 2020
$125k raised fromY Combinator Winter 2021 and 10 moreSee all investors
Develops electrification software for the scalable deployment
WeaveGrid works with utilities, automakers, EVSEs, and EV owners to enable and accelerate the electrification of transportation.
Using machine learning, optimization, and predictive analytics, our software solution solves several EV-grid integration challenges for utilities in a systems-oriented manner; helps integrate renewable energy resources on the grid; and saves utility customers money on their bills.
Our vision is to drive the rapid decarbonization of the transportation and electric networks by intelligently connecting EVs to the grid.
San Francisco, United States
Founded 2018
Raised fromWoven Capital and 21 moreSee all investors
Oceans of Energy - we make green hydrogen at sea and transport it globally
Question: Where is the majority of the world’s renewable energy?It’s in the 70% of the globe we call… the Oceans.The problem is current renewables can’t reach it.Introducing DRIFT Energy Yachts.We deploy sailing ships over the horizon to harvest green hydrogen at sea.Using our AI routing software to hunt 'Goldilocks' weather, enabling our energy ships to achieve high load factors of up to 80%.Then deliver it to any port… globally.Like a ‘free range’ wind farm with planet scale impact.Customers such as Energy & Shipping companies, Superyacht owners and Island nations are approaching us ...
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London, United Kingdom
Founded 2021
$866.3k raised fromPre-Seed and 3 moreSee all investors
Say hello to next generation temporary power
Meet Cynthia that works here
Moxion Power manufactures industrial-scale electric generators and provides temporary-power-as-a-service to customers in the construction, events and entertainment, data center, and electrified transportation industries. Our battery gensets have the same dimensions, run-times, and performance capabilities as traditional trailer and skid mounted diesel generators, with the added benefits of being clean, perfectly-quiet, and offering superior load flexibility. Moxion's logistics team remotely monitors our gensets and provides battery charging/swapping services so our customers never have to worr...
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Richmond, United States
Founded 2020
$125k raised fromY Combinator Winter 2021 and 14 moreSee all investors
Flexibility solution provider for Business customers
Meet Simon that works here
Sympower partners with leading industry players to shape a net-zero future. We unlock revenue streams and stabilise grids by maximising the value of flexibility across energy markets and industries, as it is crucial for the energy transition that all assets are flexible. We utilise our advanced and automated flexibility capabilities to temporarily adjust the power of systems, machines and processes when the grid is out of balance. By using our non-intrusive software solutions, our customers enhance the value of their energy assets and provide an essential service that enables a fully-renewable...
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Amsterdam, Netherlands
Founded 2015
$7.5k raised fromPrototron and 15 moreSee all investors
Planning and optimisation for distributed energy projects
We provide simulation and optimisation software to plan, track, and optimise distributed energy projects including virtual power plants, microgrids, community batteries, and behind-the-meter renewable power systems.
We create a digital twin of projects before they are built and we maintain the digital twin in sync with the physical assets once they are in the ground to track and optimise their performance. Our software co-optimises electrical loads, PV generation, battery storage, and EV charging within electricity markets and electricity distribution networks.
There will be massive investm...
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London, United Kingdom
Founded 2020
$1m raised fromCommercialisation Australia and 15 moreSee all investors
Breakthrough low-cost energy storage enabling 100% renewable energy
Meet Christopher and Tim that work here
Noon Energy is developing a new class of ultra-low cost battery technology that provides high energy density long-duration storage with the unique fundamental properties needed to enable 100% renewable energy. Our new battery stores energy by splitting carbon dioxide into solid carbon and oxygen in a flow battery configuration, using earth-abundant materials and simple reaction chemistry. This unique chemistry enables 10x lower storage cost than lithium ion batteries. With storage media that costs less than $1 per kWh capacity, it offers stationary storage at below $20 per kWh capacity with 10...
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Palo Alto, United States
Founded 2018
$225k raised fromNational Science Foundation and 15 moreSee all investors
Delft-based startup developing mobile airborne wind energy systems.
We envision a world where renewable electricity is affordable for everyone. At Kitepower, we develop the future generation of wind energy systems. Our innovative technology can significantly reduce the cost of wind energy and can be used in remote locations. In addition, our systems are environmentally friendly whilst having minimal visual and noise impact.
Kitepower is a leading start-up in airborne wind energy, developing innovative and cost-effective alternatives to existing wind turbines by using kites to generate electricity. Its patented technology is a game-changer in the wind energy s...
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Delft, Netherlands
Founded 2016
$3.6m raised fromDigital Economy and 4 moreSee all investors
Created to accelerate the energy transition
Prague, Czech Republic
$3.5m raised from3one4 CapitalSee all investors
Growing by nature
London, United Kingdom
$75.7m raised fromKommunalkreditSee all investors
Fueling Tomorrow, Feeding Change
Dublin, Ireland
$51.9m raised fromEuropean Union - EUSee all investors
Modular, scalable utility-scale wind energy at a fraction of the cost
Airloom Energy, Inc. is a VC-funded wind energy start-up headquartered in Laramie, WY that has developed a cutting-edge wind capture system which is dramatically more portable, configurable and lower cost than traditional wind turbines.
Traditional horizontal-axis wind turbines (HAWTs) are big and getting bigger. The immense scale of these turbines is a barrier to innovation and mass manufacturing, and limits where utility-scale wind can be installed. Scaling up conventional turbines has reached the point of diminishing returns. Competing technologies continue to drop in price, but conventio...
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Laramie, United States
Founded 2020
Raised fromAdiuvans Foundation and 7 moreSee all investors
Lithium-ion battery manufacturer and battery materials.
Delhi, India
Founded 2017
Raised fromCactus Venture Partners and 10 moreSee all investors
Clean hydrogen on-site.
Modern Hydrogen's distributed hydrogen production systems enable clean heat and fuel, today. No waiting on hydrogen pipelines, or delivery trucks. No large, high-pressure storage necessary. No more emissions.
Bothell, United States
Founded 2015
Raised fromMiura Group and 19 moreSee all investors
Green hydrogen company that manufactures proton exchange membrane
Incline Village, United States
Founded 2019
Raised fromBaruch Future Ventures and 7 moreSee all investors
US- based sustainable manufacturing of lithium for battery manufacturing.
Lithium Technologies is at the forefront of revolutionizing the United States' lithium supply chain. Our pioneering process is set to address the critical demand for lithium by transforming mine waste rock into valuable resources. This innovative approach not only fulfills the market's needs but also ushers in a new era of sustainability in lithium production.
Our proprietary technology stands out by utilizing a cutting-edge technique that significantly reduces energy consumption, curtails greenhouse gas emissions, and eliminates acidic byproducts. The flexibility of our process allows for a ...
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Lynchburg, United States
Founded 2022
$208k raised fromThe Batchery and 5 moreSee all investors
The Rondo Heat Battery replaces fossil-fired boilers with zero-carbon heat.
Rondo Energy makes industrial decarbonization possible — and profitable — today.
The RHB meets the demanding needs of industry for safe, simple, low-cost energy by economically replacing fossil fuel-fired furnaces and boilers—unlocking energy prices for global industries that are both more affordable and predictable.
The company provides zero-carbon, low-cost industrial heat to heavy industry. It does this by capturing low-cost renewable electricity in its Heat Battery, which provides on-demand delivery of high-temperature heat in the form of hot air, steam or hot water. Rondo helps custom...
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Oakland, United States
Founded 2020
Raised fromH&M Group Ventures and 14 moreSee all investors
Unlocking, Enabling, and Accelerating the Floating Offshore Wind Industry
Gazelle Wind Power was founded in 2020 by CEO Jon Salazar to unlock the potential of the massive deep-water offshore wind market. The company has designed a durable, disruptive hybrid floating offshore wind platform with a high stability attenuated pitch that surmounts the current barriers of buoyancy, stability, and geographic limitations without impacting fragile marine environments. The platform enables wind turbines to be placed farther at sea in deeper waters to maximize renewable energy generation.
After successfully raising more than $12 million in 2021, the company completed its first...
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Dublin, Ireland
Founded 2020
$150k raised fromKatapult Ocean Accelerator and 8 moreSee all investors
Utilizing perovskites to make solar energy more powerful and cost-effective
Baldwin Park, United States
Founded 2014
Raised from31ventures and 7 moreSee all investors
Simplifying decarbonisation for the World's most complex organisations
Meet Ben that works here
CoolPlanet connects into a manufacturer's operational IT systems to extract data about the major energy consuming systems and use that data to model and optimise carbon performance. This data is then used to build a decarbonisation pipeline for a site, and whole organisation, allowing organisations to track performance against any corporate and local decarbonisation goals, and manage the the financial and operation performance of their carbon projects.
CoolPlanet allows an organisation to see its 'management account' for carbon that includes not only its direct emissions (scopes 1 and 2) but...
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Enniskerry, Ireland
Founded 2008
Raised fromFree Electrons Organisation and 1 moreSee all investors
Unlocking supercritical geothermal energy everywhere
Cambridge, United States
Founded 2018
$12m raised fromNabors Industries Ltd and 13 moreSee all investors
Advanced Energy Storage Solutions
Meet Matthew that works here
Newcastle upon Tyne, United Kingdom
Founded 2010
Raised fromFilipe Portela and 25 moreSee all investors
Design & manufacturing of innovative Fuel Cell technology
Meet Christopher, mardit and Alice that work here
EH Group designs and manufactures Fuel Cell stacks and systems. EH Group’s innovative & patented fuel cell technology offers: High Power Density, Simplified System Architecture, Scalable Fuel Cell Production. EH Group FC systems are in the range of 1kW-250kW on a single stack platform or higher power by combination of systems. Due to its extreme compactness EH Group's Fuel Cell technology is an ideal candidate for heavy duty mobility where weight and volume reduction are two key criteria. EH Group product offering can also be deployed in large scale stationary applications such as data center...
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Nyon, Switzerland
Founded 2017
$3.4m raised fromHorizon 2020 and 4 moreSee all investors
We are a global leader in wave energy technology with our WaveRoller device
Meet Matthew that works here
AW-Energy Oy is a pioneer in the green economy and a global leader in wave energy technology, which provides significant added value to the production of Green Hydrogen and in the transition to cleaner and more sustainable renewable energy provision.
Its flagship product, WaveRoller®, is the world’s first certified and demonstrated commercial‐scale wave energy converter unit that is submerged near-shore and works on the principle of an innovative hinged panel that is attached to the sea bed. It generates electricity from the movement of the waves (surge phenomenon) and is installed close to ...
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Vantaa, Finland
Founded 2003
$18.4m raised fromTekes and 3 moreSee all investors
The smarter way to shower.
Toronto, Canada
Founded 2019
$738.6k raised fromRed Thread Ventures and 8 moreSee all investors
Building integrated solar roofs and facades with a Virtual Power Plant
We sell and build building integrated solar roofs and connect them into a virtual power plant that can do grid/load balancing services.
Stockholm, Sweden
Founded 2013
Raised fromPFR Ventures and 13 moreSee all investors
Start-up with research project in urban wind energy
Roseo is a project aimed at developing urban wind energy to achieve sustainable buildings, reduce fossil fuel consumption, and greenhouse gas emissions by promoting self-generation of clean and secure energy within structures. It utilizes previously unused space for non-polluting energy generation, aligning with the European Directive on Nearly Zero Energy Buildings.
Roseo introduces a novel form of generation compatible with existing methods like photovoltaic solar energy, enhancing energy production. With our proprietary tool, Anemoi—a software and weather station model—we assess wind poten...
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Portugalete, Spain
Founded 2020
$460.3k raised fromKutxa Enea Fundazioa and 5 moreSee all investors
Identify and analyze the best solar sites faster
Oslo, Norway
Founded 2020
Raised fromElevate (elevatenp.org) and 9 moreSee all investors
Transforming daily lives with solid state solutions.
Durham, United States
Founded 2008
$3m raised fromARPA-E and 28 moreSee all investors
Long Duration Energy Storage at utility scale
Energy Dome is the Long Duration Energy Storage technology company that developed the CO2 Battery enabling energy storage capacity of 20 MW / 200 MWh.
Milan, Italy
Founded 2019
Raised fromBreakthrough Energy Ventures and 17 moreSee all investors
Lowest cost renewable heat.
Meet Apostol, Martha Emilia and Samanta that work here
SolarSteam, est. 2017 as Alberta corporation, is a hard/climate-tech start-up focused on development and commercialization of a novel enclosed concentrated solar technology delivering renewable heat to industrial and institutional clients in extreme climates. The technology offers plug and play integration into brownfield and greenfield facilities in heat-intensive industry markets.
SolarSteam system operates in conjunction with existing boiler systems, using boiler feed-water or heat transfer fluids to provide supplementary hot water and steam generation at temperatures up to 400°C/750°F. Wh...
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Calgary, Canada
Founded 2017
$762.6k raised fromNational Research Council - IRAP and 14 moreSee all investors
GreenPlat is a cleantech - SaaS blockchain to drive tracebility &management
Plataforma Verde is a SaaS in blockchain that covers the full production chain, from raw material extraction to final disposal. We help our customers to achieve zero-landfill providing full traceability of their production chain and support on environmental compliance.Plataforma Verde empowers companies to have full control over their production and/or commercial chain. Our blockchain software tracks raw material extraction, production processes, and waste disposal, monitoring the entire supply chain until the appropriate destination. Besides controlling production losses, waste generation an...
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Sao Paulo, Brazil
Founded 2016
$353k raised from100+ Accelerator Cohort 2 and 13 moreSee all investors
A unique walking robotic platform for wind turbine blade inspection/repair
Meet Chris that works here
BladeBUG is developing advanced robots to perform detailed remote contact inspections and early stage repairs of wind turbine blades cheaper, safer and faster than currently be done using rope access technicians. Our vision is for automation and robotics to ensure safe, scalable growth of the offshore wind industry. The BladeBUG robot ensures blades are in their optimal condition for generation.
BladeBUG's current prototype robot robot has been deployed numerous times on a 7MW offshore turbine in Scotland, as well as onshore turbines in the UK and France. BladeBUG recently performed a phased ...
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London, United Kingdom
Founded 2014
$491.4k raised fromThe Offshore Wind Growth Partnership and 8 moreSee all investors
Making cement carbon-negative without changing the product or price
Meet Cody that works here
Brimstone is on a mission to decarbonize the cement industry. The $1 trillion cement market is responsible for 7.5% of carbon emissions annually, with a greenhouse gas impact just behind cars. Ordinary portland cement (OPC), the binder in most forms of concrete, is made by heating limestone (calcium carbonate), a process that releasese huge amounts of CO2 — about 8 percent of the world’s annual total. To meet climate goals without crippling the global construction industry, nations need a zero-carbon or carbon-negative ways to make cement. Brimstone makes OPC by feeding calcium-silicate rock...
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Oakland, United States
Founded 2019
$2m raised fromNational Science Foundation and 15 moreSee all investors
Dimensional Energy is scaling a modular photocatalytic reactor platform
Dimensional Energy (DE) is an Ithaca, NY based startup focused on optics, engineering, and materials challenges in Solar Fuels development. Our approach includes integration of technologies into a broader platform, finding synergies that can be developed for the production of negative emissions chemicals and fuels.Specifically, our core innovation is the use of optical waveguides to take concentrated sunlight and uniformly illuminate the interior of a two stage photothermal and photochemical reactor. The waveguides create a very high surface area for which photocatalysts can do their chemis...
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Ithaca, United States
Founded 2016
Raised fromDemos Capital and 21 moreSee all investors
Advanced Battery Membranes
Meet Peter that works here
Supplying clean energy and water to a projected 10 billion people in the 21st century is the greatest challenge of our time—creating the rare alignment of massive financial opportunity and potential for positive societal impact. Batteries and water treatment systems are two markets central to unlocking a sustainable future but in need of innovative new materials to improve their efficiency, and thus economics.Membranes are a crucial component of both batteries and water treatment systems where poor membrane performance from today’s membranes results in shortened device lifetime, increased cos...
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Emeryville, United States
Founded 2015
Raised fromCleantech Open West and 8 moreSee all investors
A virtual power platform helping households to make money on power markets.
Gridio is a platform that enables smart demand management for electrical grids, benefiting system operators and homeowners. Our platform connects and aggregates household devices electric heaters, electric water heaters as well as electric vehicles to power markets, enabling their:
1. Optimisation2. Earnings from flexibility3. Consumption monitoring
We use smart relays, consumption monitoring and analysis, predictive demand-response management software to convert under-utilized electrical devices to a new source of power supply for the grid. We are also building an open API for future devi...
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Tallinn, Estonia
Founded 2018
Raised fromNEO Investment Partners and 13 moreSee all investors
Amber is building an electricity future that actually works for customers.
Meet Chris that works here
Founded in 2017 by Chris Thompson and Dan Adams, Amber gives customers dynamic power prices that change depending on the real wholesale value of energy. Customers can pay less by charging your battery when energy is greener and cheaper as well as earn more by exporting when prices increase.
Combined with Amber's smart tech, solar and battery owners have the power to supercharge their savings, take control of their battery and make their energy work harder for them.
Amber is backed by some of Australia’s best accelerators and investors, including EnergyLab (Australia’s leading energy acce...
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Melbourne, Australia
Founded 2017
Raised fromInnovation Connections and 11 moreSee all investors
Developer of hydropower systems
Natel Energy is working to support healthy rivers, promote biodiversity and decarbonize the grid through fish-safe hydropower and accurate, timely decision-making tools that improve natural resource management.
Natel delivers high-performance fish-safe turbine and plant designs and engineering services informed by industry-leading CFD modeling and analysis as well as an in-house hydraulic test lab. In partnership with turbine manufacturers, Natel designs solutions to upgrade existing hydropower plants and develop new, sustainable projects worldwide, mitigating climate change and curbing bi...
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Alameda, United States
Founded 2009
Raised fromCito Ventures and 6 moreSee all investors
Unleashing Water's Natural Power
Emrgy designs and deploys modular, scalable hydroelectric solutions without the need for construction or dams. Compared to intermittent solutions like solar and wind, the controllable nature of these waterways enable higher capacity factors, do not require adjacent technologies such as storage, and ultimately deliver quicker and greater value to the customer. While in-canal hydro market potential has not been adequately quantified to date, the US market conservatively represents >6GW of undeveloped potential. Emrgy has developed a proprietary, global resource assessment tool to better characte...
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Atlanta, United States
Founded 2014
$125k raised from100+ Accelerator Cohort 4 and 9 moreSee all investors
Local power generation for the zero carbon future
Driven by our vision of the affordable, reliable, net-zero carbon grid of the future, Mainspring has developed a new category of power generation — the linear generator — that delivers onsite, fuel-flexible power to accelerate the transition to the future grid. To learn more visit www.mainspringenergy.com.
Menlo Park, United States
Founded 2010
Raised fromTrinity Capital and 28 moreSee all investors
We build a risk balanced portfolio, to increase reliability and efficiency.
Houston, United States
Founded 2021
Raised fromNabors Industries and 1 moreSee all investors
Green hydrogen through world-class innovation
Copenhagen, Denmark
Founded 2018
Raised fromYara Growth Ventures and 10 moreSee all investors
Warming homes, not the planet.
Rauma, Finland
Founded 2023
Raised fromLifeline Ventures and 6 moreSee all investors
Development, manufacturing, and sales of next-generation power type energy
Tokyo, Japan
Founded 2011
Raised fromSumitomo Mitsui Trust Bank and 11 moreSee all investors
Unlocking electricity transmission with scalable superconductors
VEIR’s mission is to rapidly accelerate the growth in electric transmission capacity necessary for global greenhouse gas (GHG) emissions reductions and grid resilience. VEIR is developing the next generation of superconducting electric transmission lines that operate with 5-10 times the transfer capacity of conventional lines at a given voltage level. More capacity at a given voltage means that VEIR lines can greatly increase the transfer capacities in existing transmission corridors and greatly reduce the space required for new corridors.
VEIR lines add much-needed capacity to the grid with...
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Woburn, United States
Founded 2019
Raised fromDara Holdings and 21 moreSee all investors
Realizing a world filled with green energy
Since 2004, i-Grid Solutions has consistently advocated the business vision of "creating,'' "connecting,'' "reducing,'' and ``utilizing'' energy, and is developing a business that maximizes the value of green energy.We have built distributed solar power plants using the roofs of existing facilities such as commercial facilities and logistics facilities, and by utilizing the roofs, we have increased the use of renewable energy without destroying the land. Using our unique power prediction and analysis technology powered by AI, we network our solar power plants and supply excess power to other ...
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Tokyo, Japan
Founded 2004
Raised fromShoko Chukin Bank and 11 moreSee all investors
Solestial, Inc. is the solar energy company for space.
Solestial, Inc. is the solar energy company for space. Solestial’s core technology is a breakthrough ultra-thin silicon solar cell that can self-cure radiation damage at normal operating temperatures in space, packaged in a flexible, lightweight panel designed to achieve minimum degradation for up to 10 years in LEO. Solestial panels can be mass-produced using automated machines resulting in costs 90% lower than incumbent technologies, with virtually unlimited manufacturing capacity. From today’s satellite constellations and research projects to tomorrow’s utility-scale energy infrastructure ...
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Tempe, United States
Founded 2013
$1.2m raised fromNational Science Foundation and 9 moreSee all investors
Turnkey EV charging solutions at home, at work and on the go.
El Segundo, United States
Founded 2018
Raised fromFifth Wall Ventures and 1 moreSee all investors
Uncompromising Performance By Design.
Ionblox develops high energy, fast charging and low-cost lithium ion batteries with a proprietary Silicon based anode for electric and aerial vehicles.
Fremont, United States
Founded 2017
Raised fromApplied Materials and 6 moreSee all investors
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