SeaTwirl
- Company typePublic
- Founded2012
- HeadquartersGothenburg, Sweden
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
SeaTwirl firmographics
Firmographics- Name
- SeaTwirl
- Legal name
- SeaTwirl AB (publ)
- Website
- https://seatwirl.com
- Company type
- Public
- Founded year
- 2012
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Ownership category
- akta.pro rank
SeaTwirl industry classification
Industry- Product category
- Floating Offshore Wind Turbines
- NAICS
- Turbine and Turbine Generator Set Units Manufacturing (333611), Wind Electric Power Generation (221115), Ship Building and Repairing (336611)
- SIC
- Engines & Turbines (3510)
- akta.pro primary industry
- Offshore Wind Power Generation (Floating) (EUACAFAC)
- akta.pro secondary industries
- Offshore Wind Project Development & Leasing (EUAMACAB), Advanced Wind Technology R&D (Floating Offshore, Airborne Wind, New Rotor/Blade Concepts) (EUAMAOAB), Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating) (EUAMACAE), Wind Turbine Installation & Commissioning (Cranes, Vessels, Jack-ups) (EUAMACAG)
Keywords
Where SeaTwirl is headquartered
LocationHeadquarters
- HQ city
- Gothenburg
- HQ country
- Sweden
- HQ region
- Europe
Offices2 records
Markets served
SeaTwirl business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure
Revenue model
- Floating Wind Turbine Sales: SeaTwirl generates revenue primarily through the sale of floating vertical-axis wind turbines. The company offers multiple turbine models (S1, S1.5, S2x, S3) ranging from 30kW to 6MW for different applications including offshore platforms, islands, fish farms, and wind farms.
- Customization and System Integration Services: The company provides customized solutions for each unique case, adapting technical solutions for all possible locations, conditions, and power demands. Project-specific modifications can include chemical injection storage, backup generators, compressors, and pumps.
- Integrated Power System Solutions: By integrating SeaTwirl's floating wind technology with battery solutions (such as Verlume's subsea batteries), the company can offer complete power solutions for offshore applications, potentially including ongoing service and maintenance contracts.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom project-based pricing |
Go-to-market motion3 records
Distribution channels3 records
Marketing channels8 records
SeaTwirl product offering
Product offeringCore offering
SeaTwirl develops, manufactures, and sells floating vertical-axis wind turbines (VAWTs) for deep-water offshore environments, with power outputs ranging from 30 kW up to 6 MW across the S1, S1.5, S2x, and S3 product family. Each turbine integrates the tower, foundation, and floating SPAR buoy into a single rotating unit, eliminating pitch and yaw systems and enabling onshore assembly followed by tow-out to site. The technology is targeted at powering oil and gas platforms, fish farms, remote islands, and offshore wind farms.
Product overview
SeaTwirl offers a portfolio of floating vertical-axis wind turbines (VAWTs) designed specifically for deep-water offshore environments. The product lineup includes four turbine models: S1 (30kW prototype deployed in 2015), S1.5 (200-400kW for small remote applications), S2x (1MW under development for Norway), and S3 (4-6MW for larger electrification applications). All turbines feature a unique integrated SPAR design with low center of gravity, eliminating the complex interface between turbine and foundation. The company also introduced a two-blade design variant in 2025 enabling flat-pack assembly without large cranes.
Differentiator
Problem solved
Functional benefit
Products and services
- SeaTwirl S1
Quantifiable outcome
- Market projections estimate annual growth rate (CAGR) of more than 40% for floating offshore wind from the end of the 2020s
- +3 more outcomes
Companies that use SeaTwirl
Customer profileNamed customers3 records
Segments4 records
Ideal customer profiles4 records
SeaTwirl technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
SeaTwirl partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and minor.
- Business SwedencoreBusiness Sweden invited SeaTwirl to join the Swedish business delegation to Canada and to present at UN's third Ocean Conference in Nice. SeaTwirl's partnership with Aks Wind was selected as one of three national success stories to be presented to the delegation.
- University College CorkcoreUniversity College Cork serves as the Project Coordinator for the Verti-Go project, a €15 million Horizon Europe-funded initiative to demonstrate SeaTwirl's 2MW floating wind turbine technology. The project includes design, fabrication, installation, and operation phases through 2029.
- Verti-Go Consortium PartnerscoreThe Verti-Go consortium includes EDP – CNET Centre for New Energy Technologies SA, Greenov, Next Fabrication, Sub Connected AB, Sowento, RSTER, PNO, Bureau Veritas, and Zorlu Enerji. DNV serves on the advisory board. SeaTwirl serves as Technical Coordinator for this EU-backed initiative.
- Aks Wind Energy CorporationcoreSeaTwirl signed an MoU with Aks Wind to explore and develop the Canadian market for floating wind power. The partnership aims to identify sites in British Columbia for potential floating wind installations. Aks Wind brings Indigenous leadership, technology depth, and major projects development experience. SeaTwirl's unique turbine design with flat-pack assembly enables use of local supply chain in Canada.
- VerlumecoreSeaTwirl and Verlume signed an MoU to drive the electrification of offshore assets and support decarbonization of island mode power systems. The partnership combines SeaTwirl's floating wind technology with Verlume's intelligent subsea batteries and power management systems to develop stable, reliable, and sustainable power solutions for offshore applications including oil and gas, remote islands, and military applications.
- Sumitomo Corporation Power & Mobility Co., Ltd.coreSeaTwirl signed an MoU with Sumitomo Corporation Power & Mobility to explore opportunities in Japan, particularly for oil and gas operators and other applications in Southeast Asian markets.
- OceaneeringcoreSeaTwirl signed an MoU with Oceaneering in 2023 to explore collaboration opportunities in the offshore wind sector.
- Ocean Energy Scale-Up Alliance (OESA)minorSeaTwirl joined OESA in 2018 and received a grant of MEUR 0.5 to support development activities.
Scale indicators7 records
Recent moves7 records
Expansion highlights6 records
SeaTwirl competitors and assessment
Company assessmentBroad incumbents
- Aker Solutions: Aker Solutions is a major offshore engineering and EPC contractor that housed Aker Offshore Wind until its wind business was reorganized. Comparable as a large-scale offshore-wind infrastructure provider and former employer of SeaTwirl's CEO.
- Equinor (Hywind): Equinor's Hywind program operates the world's first floating wind farm (Hywind Scotland) and the Hywind Tampen oil-platform electrification project in Norway. Comparable as a major energy player pursuing floating offshore wind with deep balance sheet and operational track record.
- Vestas: Vestas is the world's largest wind turbine OEM with offshore wind offerings through the V236-15.0 MW turbine. Comparable as the dominant wind turbine OEM and SeaTwirl's primary horizontal-axis competitor for utility-scale offshore wind deployments.
- Siemens Energy (Gamesa): Siemens Gamesa (now under Siemens Energy) is a leading offshore wind turbine OEM with the SG 14-222 DD platform. Comparable as a major incumbent wind turbine manufacturer whose horizontal-axis technology represents the primary alternative architecture to SeaTwirl's VAWT.
Direct peers
- Principle Power: Principle Power develops the WindFloat floating offshore wind platform, the most advanced floating-wind technology with multiple utility-scale projects in Portugal, Scotland, France, and Japan. Directly comparable as a pure-play floating offshore wind developer with utility-customer traction.
- Hexicon: Hexicon is a Swedish floating offshore wind developer with a twin-rotor vertical-axis concept. Directly comparable as a Scandinavian floating-wind innovator pursuing similar deep-water markets, with overlapping board-level industry connections.
- BW Ideol: BW Ideol developed the FloatGen demonstrator in France and pursues floating offshore wind projects globally using its barge-based floater. Directly comparable as a floating-wind pure-play targeting utility-scale and oil-and-gas electrification markets.
Emerging players
- Verlume: Verlume provides intelligent subsea batteries and power management systems for offshore electrification. Directly comparable as SeaTwirl's strategic technology-integration partner for combined wind-plus-storage offshore power solutions.
- Sif Group: Sif Group manufactures monopile foundations for offshore wind and is expanding into floating foundations. Comparable as a substructure specialist serving the offshore wind value chain where SeaTwirl's integrated spar represents a structural alternative.
- Kitemill: Kitemill is a Norwegian airborne/vertical-axis wind technology developer. Comparable as a fellow vertical-axis wind innovator and as an overlapping board connection (Jérôme Guillet sits on both SeaTwirl and Kitemill boards).
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
SeaTwirl social profiles
Digital presenceSeaTwirl compliance and trust
Trust signalCompliance1 record
SeaTwirl financial estimates
Financial estimateRevenue estimate
Valuation estimate
SeaTwirl leadership team
Management profileNumber of profiles
Profiles12 records
SeaTwirl funding detail
Funding detailFunding overview
Funding rounds3 records
Investors3 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SeaTwirl M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SeaTwirl
What does SeaTwirl do?
SeaTwirl develops, manufactures, and sells floating vertical-axis wind turbines (VAWTs) for deep-water offshore environments, with power outputs ranging from 30 kW up to 6 MW across the S1, S1.5, S2x, and S3 product family. Each turbine integrates the tower, foundation, and floating SPAR buoy into a single rotating unit, eliminating pitch and yaw systems and enabling onshore assembly followed by tow-out to site. The technology is targeted at powering oil and gas platforms, fish farms, remote islands, and offshore wind farms.
Is SeaTwirl a public or private company?
SeaTwirl is a public company. It is classified as public and is currently operating.
When was SeaTwirl founded?
SeaTwirl was founded in 2012. It employs 11 to 50 people.
Where is SeaTwirl based?
SeaTwirl is headquartered in Gothenburg, Sweden, in the Europe region.
How does SeaTwirl make money?
Three revenue lines are on record. Floating Wind Turbine Sales are the primary driver. The others are customization and System Integration Services and integrated Power System Solutions.
Who are SeaTwirl's main competitors?
Broad incumbents on record are Aker Solutions, Equinor (Hywind), Vestas and Siemens Energy (Gamesa). Direct peers are Principle Power, Hexicon and BW Ideol. Emerging players are Verlume, Sif Group and Kitemill.
Does SeaTwirl have an API?
No public API is recorded for SeaTwirl.
What industry is SeaTwirl in?
SeaTwirl's product category is Floating Offshore Wind Turbines. Its primary akta.pro industry code is EUACAFAC, Offshore Wind Power Generation (Floating), with a secondary code of EUAMACAB, Offshore Wind Project Development & Leasing. Its NAICS code is 333611 and its SIC code is 3510.