CleanTech startup ecosystem
We track 96 organisations in this sector across 6+ countries.
Showing 1–20 of 96 CleanTech
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CleanTech results
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1KOMMA5°
1KOMMA5° (named for the 1.5°C climate target) is one of Europe’s fastest-scaling energy transition companies, reaching unicorn status in roughly 21 months. Based in Hamburg, the firm tackles the “last mile” of decarbonization by combining a roll-up acquisition strategy with a software-defined energy platform. Instead of only selling solar panels, 1KOMMA5° acquires local installer businesses across Europe and digitizes them to deliver end-to-end home electrification — solar, batteries, heat pumps, and EV chargers — with consistent quality and financing. The company’s differentiator is Heartbeat, a proprietary energy management system that turns these assets into a virtual power plant. Heartbeat orchestrates when batteries charge or discharge based on real-time spot prices and grid conditions, allowing households to capture savings from dynamic tariffs and to export power during peak demand. In 2025, the system expanded to automated trading of household energy, making “free” electricity periods during windy or sunny hours a tangible consumer benefit. This blending of hardware deployment and energy-software automation allows 1KOMMA5° to capture margin both on installation and on recurring software and energy services. Founder Philipp Schroder (former Tesla country director and Sonnen executive) used his industry network to skip early accelerators, and the company instead embedded itself in the Hamburg Startup City ecosystem. Its acquisition engine is relentless: by buying regional market leaders, it locks in the most scarce resource in the sector — skilled installers — while rapidly expanding geographic reach. By early 2026, 1KOMMA5° had expanded beyond DACH into the Nordics, Spain, and Australia, positioning itself for a cross-continental footprint ahead of a public listing. The company has signaled an IPO-readiness push, backed by record turnover reported for 2024 and an expansion into branded hardware components to increase margin and supply-chain resilience. Its investor base blends strategic and growth capital: Porsche Ventures provided early backing, G2VP brought Silicon Valley cleantech expertise, Eurazeo and eCapital added European growth capital, and Norrsken VC underscored the impact thesis. In 2026, 1KOMMA5° is a case study in how Europe can scale climate tech through operational execution rather than pure technology — a disciplined roll-up with a software heart that turns millions of households into coordinated energy assets.
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Aerones
Aerones is the world-leading provider of robotic wind turbine maintenance and inspection services. Founded in 2015 by Dainis Kruze and Janis Putrams, the company deploys rope-suspended robots guided by AI software to perform blade cleaning, leading-edge erosion repairs, lightning protection checks, and autonomous visual inspections — completing tasks up to four times faster than manual methods. A Y Combinator W18 graduate, Aerones has raised $115 million in total including a $62 million Series B in 2025, serves customers representing over 50% of global wind power capacity, and operates in 30+ countries.
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AMPECO
AMPECO is a Sofia-founded SaaS company providing a white-label, hardware-agnostic electric vehicle charging management platform. Founded in 2019, the platform is used by charge point operators, energy utilities, and e-mobility service providers across 70+ markets. In October 2024 the company raised a €24.7 million Series B round to fund international expansion. AMPECO has offices in the USA, UK, France, Netherlands, and Bulgaria.
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Anders Kjær
Founder and Managing Partner of PSV Hafnium, Denmark's first dedicated deep-tech venture fund, which closed at €60M in 2025. He invests in science-rooted spinouts across quantum computing, cleantech, new materials, biotech and new space, primarily from Nordic technical universities.
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Anders Opedal
Anders Opedal is President and CEO of Equinor, Norway's state-controlled energy company with operations in over 30 countries and one of the world's largest offshore oil and gas producers. He assumed the CEO role in November 2020, overseeing Equinor's strategy to expand into offshore wind, solar, and hydrogen alongside its legacy hydrocarbon business. Equinor is the main partner of the Scale-Ups venue at ONS 2026, supporting energy startups and scale-ups at the Stavanger event.
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Ann Mettler
Ann Mettler is Vice President for Europe at Breakthrough Energy, the climate-focused investment and advocacy organization founded by Bill Gates to accelerate clean energy innovation globally. She previously led the European Political Strategy Centre, the in-house think tank of the European Commission, and served as Executive Director of The Lisbon Council from 2003 to 2014. She is a prominent voice on European clean energy technology and innovation policy, and a confirmed speaker at the ONS 2026 Strategic Conference.
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Atmonia
Atmonia is developing a breakthrough electro-catalytic process for synthesising ammonia directly from air, water and renewable electricity at ambient temperature and pressure — with zero carbon emissions. Its precious-metal-free catalyst technology, protected by multiple patents, could disrupt the conventional Haber-Bosch process that accounts for roughly 2% of global CO2 emissions. Founded in 2016, the company has raised $3M in equity alongside $10M in non-dilutive funding from sources including the Icelandic Research Fund, Technology Development Fund and Horizon Europe. Atmonia collaborates with Fujitsu on AI-accelerated catalyst development and leads the EU-funded VERGE project.
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BIENESIS
Develops a smart robotic canopy system that protects vineyards from climate hazards — hail, frost, excess heat and heavy rain. Solar-powered actuators deploy a retractable, recyclable fabric over vine rows on demand, controllable remotely.
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Bloomineral
Creates carbon-negative materials using biomineralisation — permanently storing CO2 as a limestone filler derived from cement-industry waste. Founded in 2024 at the LSCE in Paris-Saclay, targeting industrial decarbonisation.
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Brunnur Ventures
Brunnur Ventures is an early-stage venture capital firm founded in 2013 and focused on high-growth Icelandic startups. The firm backs scalable B2B software, gaming, biotech, cleantech, and marine-tech companies, writing initial seed cheques and following on through growth rounds. With around 34 portfolio companies, the firm has achieved notable exits including CCP Games and Oculis. Key partners include Founding Partner Sigurdur Arnljotsson and Managing Partner Arni Bloendal.
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Candela
Candela is a Stockholm-based marine technology company founded in 2014 that designs and builds electric hydrofoil boats and ferries, which lift out of the water on computer-controlled foils to cut energy use dramatically and extend the range of electric propulsion. Its models include leisure craft and the P-12 electric passenger ferry, and it aims to eliminate fossil fuels from waterborne transport.
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Carbfix
Carbfix dissolves captured CO2 in water and injects it into basalt rock formations, where it permanently mineralises into solid carbonate stone in under two years. Founded in 2007 as a joint research initiative by Reykjavik Energy, the University of Iceland, CNRS France, and Columbia University's Earth Institute, the company operates at the Hellisheiði geothermal power plant. In 2023 it secured a $117M EU grant and became the first company to receive an EU permit for onshore carbon capture & storage, with capacity for ~106,000 tonnes of CO2 per year. It was a WIPO Global Awards 2025 finalist and partners with Climeworks on the Mammoth DAC plant.
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Carbon Recycling International
Carbon Recycling International (CRI) designs, licenses and sells its proprietary Emissions-to-Liquids (ETL) process technology for producing green methanol from captured CO2 emissions and green hydrogen. Founded in 2006 and operating at industrial scale since 2012, CRI is globally recognised as a leader in CO2-to-methanol technology. The company raised $30M led by Equinor Ventures and counts Geely, Methanex and Eyrir Invest among its major shareholders. CRI's technology has been deployed in commercial projects in China, including one of the world's most efficient CO2-to-methanol plants built in partnership with Jiangsu Sailboat.
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CibusCell
Speyer-based deep-tech startup building a SaaS platform for green hydrogen production optimisation and virtual power plant management. Its AI-driven platform helps hydrogen producers manage electrolysers, balance supply and demand, and participate in energy markets. Available on the SAP Store.
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ClimateCamp
Antwerp-based platform for Scope 3 supply-chain emissions management that helps companies measure, report, and reduce indirect carbon emissions through collaborative supplier engagement. Focuses on the Food & Beverages sector. 800+ companies share sustainability data through the platform. Raised €3.5M seed led by Expon Capital.
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Climeworks
Climeworks is one of Europe's most important climate-tech companies because it is building commercial direct air capture systems that remove carbon dioxide from ambient air. The company operates in a category that sits beyond emissions reduction alone: carbon removal infrastructure intended to address legacy emissions and hard-to-abate sectors. Its plants use modular collectors and specialized filters to capture CO2, after which the gas can be permanently stored or used in industrial processes. That combination of chemical engineering, energy systems, project execution, and long-term offtake sales makes Climeworks a very different kind of startup from software-led climate businesses. It is a capital-intensive industrial platform that depends on trust, scientific credibility, and customer willingness to commit to the future carbon-removal market. In the European ecosystem, Climeworks matters not only for its own category leadership, but also because it shows that globally significant climate infrastructure can be conceived, financed, and scaled from Europe. It serves as a benchmark for founders and investors interested in hard-tech and climate infrastructure companies where the technical ambition, funding requirements, and operational complexity are far greater than in conventional SaaS.
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Commercialization Reactor
Commercialization Reactor is a deep-tech venture creation platform and accelerator established in 2009 in Riga, ranked among the most experienced science-commercialisation programmes in Europe. It pairs scientists and researchers with entrepreneurial co-founders to build deep-tech startups, and provides up to €50k in pre-seed investment through a six-month programme focused on market and customer development. In 2024 it launched ESA BIC Latvia as the national ESA incubation centre operator, and has supported over 40 portfolio ventures across biotech, cleantech, materials, and space.
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Cooltra
Cooltra is Europe's leading sustainable two-wheel mobility platform, operating fleets of 30,000+ electric mopeds and e-bikes for rental and B2B fleet management across 9 cities in Spain, France, Italy, and Portugal. Founded in Barcelona in 2006 by Timo Buetefisch, Holger Sprengel, and Henrik Sprengel, it has scaled to €60M+ in annual revenue with positive EBITDA and 3M+ registered users. In October 2025 Cooltra acquired rival Kleta after its insolvency, consolidating Spain's e-moped market. The company partners with BMW Motorrad for fleet supply and operates its own charging & maintenance infrastructure.
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DataCentres Ireland 2026
Ireland's leading data centre conference and exhibition at the RDS Dublin. Combines 100+ exhibitors with multi-stream conference tracks covering colocation, AI, power, cooling and sustainability for 2,000+ infrastructure professionals.
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DataGreen
Builds eco-friendly data centres using direct chip liquid cooling and hermetic server enclosures, recovering up to 98% of waste heat for building heating or grid re-injection. Cuts data-centre CO2 emissions by up to 82% while reducing energy costs.
