
The global offshore wind industry has spent the past two decades pursuing a simple goal: build larger turbines farther from shore to capture stronger and more consistent winds. In 2024, China took a significant step in that direction with the deployment of OceanX, an innovative floating wind platform developed by Mingyang Smart Energy.
Unlike conventional offshore wind systems that place a single turbine on a fixed or floating foundation, OceanX mounts two 8.3-megawatt (MW) turbines on a single floating structure, creating a combined generating capacity of 16.6 MW.
The project is more than just a capacity milestone. It introduces a new engineering approach that could influence how future offshore wind farms are designed, especially in deep-water regions where conventional fixed-bottom foundations are impractical.
What Is OceanX?
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OceanX is a floating offshore wind power platform developed by Mingyang Group and deployed at the Qingzhou IV offshore wind farm near Guangdong Province in southern China.
The platform carries two MySE8.3-180 hybrid-drive wind turbines arranged on a distinctive V-shaped structure. Together, the turbines deliver 16.6 MW of installed capacity.
The platform travelled approximately 191 nautical miles from Guangzhou to its installation site before beginning operations.
According to Mingyang, OceanX is designed for waters deeper than 35 metres and can generate approximately 54 million kilowatt-hours (54 GWh) of electricity annually, enough to supply around 30,000 households.
Why OceanX Is Different
Twin Turbines on One Platform
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Virtually every commercial offshore wind installation today uses one turbine per foundation. OceanX breaks from that convention by supporting two large turbines on a single floating structure.
This design potentially reduces the number of floating foundations, mooring systems and subsea connections needed to achieve a given project capacity. While the long-term economics will require real-world validation, the concept offers a compelling alternative for deep-water offshore wind development.
Counter-Rotating Rotor Design
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OceanX's two turbines rotate in opposite directions after start-up. Mingyang says this arrangement takes advantage of a coupled vortex effect that increases the speed of airflow between the turbines and improves energy capture.
The company reports a 4.29% increase in power generation compared with other turbines possessing an equivalent swept area.
Massive Dimensions
- Maximum height: approximately 219 metres
- Maximum width: approximately 369 metres
- Platform displacement: approximately 15,000 tonnes
Advanced Foundation Technology
One of the most notable aspects of OceanX is its foundation construction.Unlike many floating wind platforms that rely primarily on steel structures, OceanX uses a floating foundation consisting of three floats, concrete arms and connectors.
The platform is also reported to be the first floating wind foundation to employ ultra-high-performance concrete (UHPC) with compressive strength exceeding 115 MPa.
According to Mingyang, this material offers roughly four times the strength of conventional concrete used in similar applications.
The company states that the structure uses a pre-stressed concrete assembly approach intended to facilitate modular manufacturing and reduce construction costs.
Designed for Extreme Weather
One of the greatest challenges facing offshore wind projects in Asia is exposure to tropical cyclones and typhoons.OceanX has been engineered with a cable-stayed structural system and adaptive single-point mooring arrangement designed to maintain stability in harsh marine environments.
According to Mingyang, the platform can withstand wind speeds of up to 79.8 metres per second and wave heights reaching 30 metres, making it suitable for operation in typhoon-prone waters of the South China Sea.
Twin-Turbine Floating Wind Platform: Technology Explained
OceanX is an innovative floating offshore wind platform that combines two 8.3 MW wind turbines on a single floating foundation, delivering a total capacity of 16.6 MW.This differs from conventional offshore wind systems, where each turbine typically sits on its own fixed or floating foundation.
Key Technological Innovations
1. Dual-Turbine Architecture
The most significant innovation is the installation of two large offshore wind turbines on one floating platform.This approach aims to maximise power generation from a single foundation, potentially reducing the number of floating structures, mooring systems and subsea connections required for offshore wind farms.
2. V-Shaped Floating Platform
The turbines are mounted on a distinctive V-shaped floating structure designed to distribute loads efficiently while maintaining stability in deep-water environments.The platform is suitable for water depths greater than 35 metres, where fixed-bottom foundations become uneconomical.
3. Counter-Rotating Turbines
OceanX's two turbines rotate in opposite directions, creating what Mingyang describes as a coupled vortex effect.This aerodynamic interaction accelerates airflow between the rotors, increasing wind energy capture.
According to the company, the design improves power generation by 4.29% compared with turbines having an equivalent swept area.
4. Ultra-High-Performance Concrete Foundation
Instead of relying primarily on steel, the floating foundation incorporates ultra-high-performance concrete (UHPC) with compressive strength exceeding 115 MPa.Mingyang states this material is approximately four times stronger than conventional concrete, enhancing durability and load-bearing performance while supporting modular construction.
5. Cable-Stayed Structural System
The platform uses a cable-stayed support structure that reduces loads on the turbine towers and improves overall structural efficiency.The tensioned cable network helps distribute forces from wind, waves and turbine operation across the platform.
6. Single-Point Mooring Technology
OceanX employs an adaptive single-point mooring system, allowing the massive platform to align with changing wind and wave conditions while maintaining stability.This design is particularly important for deep-water offshore installations.
7. Typhoon-Resistant Engineering
The platform was specifically engineered for operation in the challenging conditions of the South China Sea.According to Mingyang, it can withstand wind speeds of up to 79.8 m/s and waves as high as 30 metres, making it suitable for typhoon-prone regions.
Why the Technology Matters
OceanX represents a shift from the industry's traditional "one turbine, one foundation" model.By integrating two turbines onto a single floating platform, it seeks to improve energy density, reduce infrastructure requirements and make deep-water offshore wind projects more economically viable.
If successful over the long term, this twin-turbine concept could influence the next generation of floating wind farms worldwide.
How OceanX Compares With Other Floating Wind Projects
While OceanX is unique because of its twin-turbine configuration, it enters a rapidly growing global floating wind market.| Feature | Hywind Scotland | OceanX |
|---|---|---|
| Country | United Kingdom | China |
| Turbine Configuration | Single turbine per floater | Two turbines per floater |
| Floating Technology | Spar-buoy | V-shaped floating platform |
| Capacity per Unit | ~6 MW | 16.6 MW |
| Deep-Water Capability | Yes | Yes |
Hywind Scotland (United Kingdom)
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| Hywind Scotland, World’s first Floating Wind Farm |
Commissioned by Equinor, Hywind Scotland became the world's first commercial-scale floating wind farm in 2017.
China’s OceanX demonstrates how floating wind technology has evolved significantly in scale since the pioneering Hywind project.
Kincardine Offshore Wind Farm (United Kingdom)
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| Kincardine Offshore Wind Farm in Scotland |
Kincardine was among the largest floating wind farms globally when completed and showcased multi-megawatt floating turbine deployment in commercial conditions.
Compared with Kincardine's approach of individual turbines on separate floating foundations, OceanX explores whether multiple turbines can effectively share a common platform.
WindFloat Atlantic (Portugal)
WindFloat Atlantic became the world's first semi-submersible floating wind farm on a commercial scale.Like most global floating wind projects, WindFloat Atlantic uses one turbine per platform, making OceanX's dual-turbine arrangement a significant departure from industry norms.
TetraSpar Demonstrator (Norway/Denmark)
The TetraSpar project focused on reducing costs through a modular floating structure that could be assembled using existing infrastructure.OceanX pursues a similar goal of improving economics but through a different route: increasing power generation from each floating foundation by carrying two turbines on a single structure.
OceanX vs India's Dhanushkodi Offshore Wind Demonstration Project
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A meaningful comparison can be made between China's OceanX and India's proposed 50 MW Offshore Wind Demonstration Farm at Dhanushkodi, Tamil Nadu, which is currently India's most advanced offshore wind test project.
| Parameter | OceanX (China) | Dhanushkodi Demonstration Project (India) |
|---|---|---|
| Status | Operational | Proposed/Test Facility |
| Developer | Mingyang Smart Energy | NIWE (National Institute of Wind Energy) under MNRE |
| Capacity | 16.6 MW (2 × 8.3 MW turbines) | 50 MW (4 turbines) |
| Platform Type | Floating offshore platform | Offshore wind demonstration facility; foundation type not specified in available sources |
| Turbine Configuration | Two turbines on a single floating foundation | Four turbines on separate installations |
| Primary Objective | Commercial-scale power generation and technology validation | Research, testing and offshore technology demonstration |
| 54 GWh/year | Not specified | |
| Deep-Water Capability | Designed for waters deeper than 35 m | Not specified |
| Unique Innovation | Twin-turbine floating foundation and counter-rotating rotors | Living laboratory for testing turbine performance, corrosion resistance and maintenance strategies |
Technology Comparison
OceanX: Pushing the Frontier
OceanX represents a next-generation floating wind concept.Instead of mounting one turbine per foundation, Mingyang places two 8.3 MW turbines on a single V-shaped floating platform.
The turbines rotate in opposite directions to improve airflow and energy capture, while the foundation uses ultra-high-performance concrete and a cable-stayed structural system.
The project is focused on proving that floating wind farms can become more cost-effective by increasing the amount of generation capacity supported by each floating foundation.
India's Approach: Building the Foundation First
India is taking a more gradual path.The Dhanushkodi project is being developed as a research and demonstration facility aimed at gathering operational experience in offshore environments, including turbine performance, corrosion management, installation techniques and maintenance requirements.
India currently has no installed commercial offshore wind capacity, with NIWE and the government continuing resource assessments, offshore measurements and pilot projects to prepare for future commercial deployment.
Takeaway
China's OceanX demonstrates how far floating offshore wind technology has advanced, showcasing a commercially operating twin-turbine floating platform.India, by contrast, is still in the pilot and demonstration phase of offshore wind development, focusing on developing local expertise, validating technologies and building the regulatory and supply-chain ecosystem needed before scaling up.
In short, OceanX is a technology deployment project, while India's Dhanushkodi project is a technology learning project.
If successful, India's future floating wind projects could eventually adopt advanced concepts similar to OceanX, but the immediate priority is establishing a domestic offshore wind industry and proving offshore technologies in Indian waters.
Why the Industry Is Paying Attention
The offshore wind sector faces a major challenge: the best wind resources are increasingly located in deeper waters where conventional fixed-bottom turbines cannot be installed economically.Floating wind platforms solve this problem, but they remain expensive. Foundations, mooring systems, installation vessels and maintenance contribute significantly to overall project costs.
OceanX offers a possible pathway to reduce these costs by:
- Increasing generation capacity per floating structure.
- Maximising energy output from a single mooring system.
- Potentially reducing the number of platforms required for a wind farm.
- Leveraging high-strength concrete instead of relying exclusively on steel-intensive designs.
Challenges Ahead
Despite its innovation, OceanX is still an early demonstration of a relatively untested concept.Several questions remain:
- How will maintenance requirements compare with conventional floating turbines?
- Will the twin-turbine arrangement increase operational complexity?
- Can the design be scaled into larger commercial fleets?
- Will developers in Europe, North America and other Asian markets adopt similar configurations?
The Bigger Picture
OceanX reflects China's increasingly prominent position in the global offshore wind industry. Over the last decade, the country has become one of the world's largest offshore wind markets and a major driver of turbine manufacturing innovation.By successfully deploying a 16.6 MW floating platform carrying two 8.3 MW turbines, Mingyang has demonstrated a new approach to floating offshore wind development.
Whether OceanX becomes a template for future projects or remains a niche engineering solution, it has already achieved something important: it has challenged one of the offshore wind industry's long-standing assumptions that one turbine must equal one foundation.
In an era where offshore wind developers are searching for every possible gain in efficiency and cost reduction, OceanX may prove to be one of the most closely watched renewable energy experiments of the decade.

















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