A new wave energy system developed by French startup Seaturns is poised to transform how clean power is generated by tapping into the natural motion of ocean waves. The technology, based on water pendulum turbines, is designed to be durable, low-maintenance, and efficient, offering a steady and predictable source of electricity. Unlike traditional renewable sources like wind or solar, wave energy provides consistent power generation, though typically at lower output levels, even in adverse weather conditions.
The system operates by using large, yellow floating cylinders that pitch back and forth with each passing wave. Inside, the motion causes a column of water to swing like a pendulum, compressing air between two chambers and driving a turbine to generate electricity. This process occurs entirely within the hull, protecting components from corrosive saltwater and turbulent seas, which enhances the system’s reliability and longevity.
Seaturns’ design is backed by organizations such as Bpifrance, Horizon Europe, and marine research institute Ifremer, indicating strong public and private sector support in France. The startup recently completed 18 months of successful offshore testing near Brest, France, which demonstrated the system’s durability and efficiency under harsh marine conditions, affirming its potential as a viable alternative to traditional energy technologies.
Historically, ocean power projects have faced challenges due to complexity, high costs, and vulnerability to damage. Seaturns addresses these issues by incorporating a simple, modular design that can operate in shallower waters, making it adaptable for coastal cities, offshore industries, and island communities. Its compact size and ease of deployment further enhance its appeal in diverse environments.
Wave energy presents a vast untapped potential, with estimates suggesting that global oceans could theoretically produce over 2 terawatts of renewable electricity. If fully harnessed, this could power a significant portion of national grids, potentially up to a third of the United States’ energy demand. Harnessing parts of Alaska’s coastline could also significantly reduce fossil fuel reliance in remote communities, highlighting the potential impact of this technology.
Recent academic studies have highlighted the promise of pendulum-based wave energy converters, emphasizing their ability to provide direct mechanical-to-electrical conversion and structural simplicity. While there are challenges, such as inconsistent wave patterns and lower current output compared to wind or solar, Seaturns’ system offers a breakthrough with its robust design, minimal maintenance requirements, and environmental benefits. As the world seeks reliable and sustainable energy solutions, wave energy is increasingly being recognized as a key player in the global transition to clean energy.