The world’s most valuable wind energy startups
Companies built around wind power: floating offshore foundations and new turbine designs, airborne and small wind, wind-farm developers founded as startups, and the robots, drones and software that inspect, repair and run wind farms. Ranked worldwide by AI-estimated valuation, with listed wind companies shown in grey at their market value for reference. The market sets the value; AI models estimate it.
Key metrics for this segment: key milestone. Figures as published by each company or the press, dated, not recalculated. The AIs weigh them alongside funding history and comparables.
Not in this segment. Listed, so not ranked: Vestas, Ørsted, Nordex, Goldwind, Suzlon, Sany Renewable, Mingyang, Inox Wind and Windey (shown in grey), and Siemens Energy, Dongfang Electric, Northland Power, Boralex, Cadeler, Dajin, Titan Wind, Hexicon and SeaTwirl. Created by a group or a fund: Corio, BlueFloat, Ventient, Aker Offshore Wind, Odfjell Oceanwind. Bought: Flotation Energy (TEPCO), BW Ideol (BW Group), Leosphere (Vaisala). Closed: Makani, Ampyx Power, Wind Catching Systems. Outside this segment: wind propulsion for ships (bound4blue). A company appears in one segment only. Method
Rankings by region
Filter the ranking and the Radar. Ranks stay worldwide. Regional pages: Europe · North America.Global ranking · Wind
This ranking shows the startups as they stood on 17 Oct 2026. Funding rounds, valuations and other events announced after that date are not included yet. They will be taken into account in the next edition, scheduled for 26 Jan 2027.
Spotted a more recent round? Tell us →First edition: no movements yet.
World · 10 ranked companies
| # | Company | Last round · Key metrics | Estimated valuation (AI) · range | Pool of InterestsInterest: a free, non-binding declaration on a company, or on a sector within an area, made during the free phase of a pool. Pool: all the Interests declared on the same target. This column shows the number of Backers and the combined amount of their tickets, to validated members only. Terms for Backers → | BackBacking a startup on Uback (pronounced “you back”) can be done in two ways: Interest · free: a non-binding declaration that signals your demand for a company or a sector. You can move or withdraw it at any time, with up to 5 at once. Intention · coming soon: a paid, confirmed declaration, still non-binding. Once its pool reaches critical mass, it is presented to a company by a partner desk. Neither is an order nor a commitment to invest. Terms for Backers → |
|---|---|---|---|---|---|
| — | VestasListed · Nasdaq Copenhagen · VWS | USD 28bnMarket cap · Oct 2026Listed company · not ranked | |||
| — | ØrstedListed · Nasdaq Copenhagen · ORSTED | USD 25bnMarket cap · Oct 2026Listed company · not ranked | |||
| — | NordexListed · Xetra · NDX1 | USD 10bnMarket cap · Oct 2026Listed company · not ranked | |||
| — | GoldwindListed · SZSE · 002202 / HKEX · 2208 | USD 8bnMarket cap · Oct 2026Listed company · not ranked | |||
| — | Suzlon EnergyListed · NSE · SUZLON | USD 5.7bnMarket cap · Oct 2026Listed company · not ranked | |||
| — | Sany Renewable EnergyListed · SSE STAR · 688349 | USD 3bnMarket cap · Oct 2026Listed company · not ranked | |||
| — | Mingyang Smart EnergyListed · SSE · 601615 | USD 2.7bnMarket cap · Oct 2026Listed company · not ranked | |||
| — | Inox WindListed · NSE · INOXWIND | USD 1.2bnMarket cap · Oct 2026Listed company · not ranked | |||
| 1 | Mainstream Renewable PowerDevelops, builds and operates onshore and offshore wind farms, alongside solar projects, in Latin America, Africa, Asia-Pacific and Europe, selling power through long-term contracts. · Controlled by Aker ASA | Minority investment · USD 633M · Mar 2022USD 46M impairment on offshore wind assets in H1 2025 · Jul 2025 | Last known equity round: Minority investment · USD 633M · Mar 2022 (Mitsui & Co.); EUR 575M for 27.5%Method | Be the first | Back |
| — | Windey Energy TechnologyListed · SZSE ChiNext · 300772 | USD 940MMarket cap · Oct 2026Listed company · not ranked | |||
| 2 | AeronesProvides robotic inspection, cleaning, repair and maintenance of wind turbine blades and towers for operators and manufacturers, using remotely operated robots that climb turbines. | Growth round · USD 62M · Jun 2025Services over 10,000 turbines a year in 30+ countries; revenue roughly tripled · Jun 2025 | Last known equity round: Growth round · USD 62M · Jun 2025 (Activate Capital, S2G Investments, Carbon Equity)Method | Be the first | Back |
| 3 | Clir RenewablesProvides an AI-based performance analytics platform that helps owners and operators of wind and solar farms detect underperformance, plan maintenance and raise energy output. | Series B · USD 22.4M · Jun 2021Key metrics not disclosed | Last known equity round: Series B · USD 22.4M · Jun 2021 (Longbow Capital, ArcTern Ventures, CPP Investments); CAD 27MMethod | Be the first | Back |
| 4 | Principle PowerDesigns and licenses WindFloat, a semi-submersible floating foundation for offshore wind turbines, and supplies engineering services to developers of floating wind farms worldwide. | Strategic investment · USD 22M · Jun 2020Key metrics not disclosed | Last known equity round: Strategic investment · USD 22M · Jun 2020 (Tokyo Gas, EDP Ventures, Repsol)Method | Be the first | Back |
| 5 | WindESCoProvides analytics software and sensors that detect yaw misalignment, control faults and underperformance in wind turbines, helping operators recover lost energy production. | Series B · USD 10M · Jun 2020Key metrics not disclosed | Last known equity round: Series B · USD 10M · Jun 2020 (WAVE Equity Partners)Method | Be the first | Back |
| 6 | AeromineMakes motionless rooftop wind units that use aerodynamic airfoils to channel wind into an internal propeller, generating on-site power for large commercial and industrial buildings. | Series A · USD 9M · May 2024Key metrics not disclosed | Last known equity round: Series A · USD 9M · May 2024 (Veriten, Thornton Tomasetti)Method | Be the first | Back |
| 7 | AirloomDevelops a wind power system in which wings travel along a low oval track to drive generators, aiming to cut materials and cost compared with conventional turbines. | Seed · USD 7.5M · Oct 2024Pilot project in Wyoming, groundbreaking planned for summer 2025 · Oct 2024 | Last known equity round: Seed · USD 7.5M · Oct 2024 (Lowercarbon Capital, Breakthrough Energy Ventures)Method | Be the first | Back |
| 8 | ModvionBuilds modular wind turbine towers from laminated veneer lumber, allowing taller towers with lower carbon emissions and easier road transport than steel equivalents. | Growth round · USD 6.3M · May 2024EUR 39.1M EU Innovation Fund grant for tower production · Apr 2026 | Last known equity round: Growth round · USD 6.3M · May 2024 (CMPC Ventures, Vestas Ventures, Almi Greentech Fund); SEK 67MMethod | Be the first | Back |
| 9 | KitepowerDevelops airborne wind energy systems in which a tethered kite pulls a ground-based generator, offering mobile power for remote sites, islands and off-grid users. | Seed · USD 3.6M · Jun 2021Key metrics not disclosed | Last known equity round: Seed · USD 3.6M · Jun 2021; EUR 3MMethod | Be the first | Back |
| 10 | Gazelle Wind PowerDevelops a hybrid floating offshore wind platform with a counterweight-and-tether stabilisation system, piloted off Portugal, to reduce steel weight and costs of floating wind farms. | Series A extension · USD 2.3M · May 2025Key metrics not disclosed | Last known equity round: Series A extension · USD 2.3M · May 2025 (DST Group, Banco Português de Fomento, Indico Capital Partners); EUR 2MMethod | Be the first | Back |
Back · Backing on Uback (pronounced “you back”) means declaring an Interest (free) or an Intention (coming soon). Backing does not mean that this company is raising funds or that a shareholder is selling shares, and it is not a commitment to invest. Any deal, through a funding round or a sale by an existing shareholder, is handled by a partner desk: the Fundraising Desk of the country for a round, the Secondary Sales Desk assigned to the company for a sale. · Terms
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How to read this ranking
Rank
Companies are ranked by AI-estimated valuation, highest first. The market sets the value; AI models estimate it.
Estimate
An AI-estimated valuation, its uncertainty range and its order of magnitude. Indicative, and imperfect by nature.
- Hundreds of k$
- Millions $
- Tens of M$
- Hundreds of M$
- Unicorn
- Decacorn
- Hectocorn
Challengers
A registered company raising funds that is not in the ranking will be able, for a fee, to appear in a separate list labelled “Challengers”, for a set period, with a memo available to verified Backers. The listing has no effect on the ranking. Not open yet.
Radar · known eligible companies, not ranked
Sorted by date of last round, with no judgement and no AI call.
- X1 Wind · Spain · EuropeSep 2026; amount not disclosedBack
- Stiesdal Offshore · Denmark · EuropeOct 2024; terms not disclosedBack
- Nabrawind · Spain · EuropeApr 2023; amount not disclosedBack
- Simply Blue Group · Ireland · EuropeNov 2022 · USD 29.5M; GBP 25M, possibly at project level; majority sale launched in 2023Back
- Envision Energy · China · AsiaNov 2021; more than USD 600M shared with its sister battery company, split not disclosedNot open to BackersCompanies based in mainland China are ranked like any other startup, but Uback does not open pools on them: capital controls and offshore (VIE) structures make minority deals impractical for our Backers.
You can still declare an interest in this segment → - Ocergy · United States · North AmericaApr 2021; amount not disclosedBack
- SkySpecs · United States · North America2020 · USD 17M; date not confirmedBack
- Clobotics · China · AsiaSep 2018 · USD 11M; wind inspection is one of two businessesNot open to BackersCompanies based in mainland China are ranked like any other startup, but Uback does not open pools on them: capital controls and offshore (VIE) structures make minority deals impractical for our Backers.
You can still declare an interest in this segment →
No company on the radar in this region yet.
Listed benchmarks
Not ranked: no intention is possible on a listed company.
- Vestas · DenmarkNasdaq Copenhagen · VWS · USD 28bn (Oct 2026)
- Ørsted · DenmarkNasdaq Copenhagen · ORSTED · USD 25bn (Oct 2026)
- Nordex · GermanyXetra · NDX1 · USD 10bn (Oct 2026)
- Goldwind · ChinaSZSE · 002202 / HKEX · 2208 · USD 8bn (Oct 2026)
- Suzlon Energy · IndiaNSE · SUZLON · USD 5.7bn (Oct 2026)
- Sany Renewable Energy · ChinaSSE STAR · 688349 · USD 3bn (Oct 2026)
- Mingyang Smart Energy · ChinaSSE · 601615 · USD 2.7bn (Oct 2026)
- Inox Wind · IndiaNSE · INOXWIND · USD 1.2bn (Oct 2026)
- Windey Energy Technology · ChinaSZSE ChiNext · 300772 · USD 940M (Oct 2026)
- Siemens Energy · GermanyXetra · ENR
- Dongfang Electric · ChinaHKEX · 1072 / SSE · 600875
- Northland Power · CanadaTSX · NPI
- Boralex · CanadaTSX · BLX
- Cadeler · DenmarkOslo Børs · CADLR
- Dajin Heavy Industry · ChinaSZSE · 002487
- Titan Wind Energy · ChinaSZSE · 002531
- Hexicon · SwedenNasdaq First North · HEXI
- SeaTwirl · SwedenSpotlight · STW
Sources and method for this segment
Calendar. Global segment rankings are published twice a year. Next edition: January 26, 2027.
Eligibility. At least $1M raised in equity, non-listed company, main activity in this segment (wind energy). A company appears in one segment only.
Sources. Company announcements, Reuters, Bloomberg, Financial Times, Recharge, offshoreWIND.biz, Windpower Monthly, TechCrunch, Expansión, Pedaily, and market data for listed companies.