07/02/2025
The U.S. is going to be left behind if the current climate of devaluing science and innovation continues.
Japan achieved a milestone in renewable energy by deploying its first megawatt-scale tidal turbine, the AR1100, in the Naru Strait near the Goto Islands.
Developed by Proteus Marine Renewables, this 1.1 MW grid-connected turbine harnesses the kinetic energy of tidal currents to generate clean electricity, supporting Japan’s decarbonization goals and reducing reliance on fossil fuels.
The AR1100 features a three-bladed horizontal-axis rotor with advanced composite blades, optimized for efficiency through real-time pitch and yaw control systems.
Mounted on a gravity-based structure and connected via a subsea cable, it delivers power to the grid with minimal environmental impact, as it operates underwater, preserving coastal aesthetics.
Building on a 2021 pilot project with a 500kW turbine that achieved 97% availability, the AR1100 was upgraded with enhanced systems for greater efficiency. This deployment marks Japan’s strategic shift toward marine energy, leveraging its vast coastal waters and strong currents like the Kuroshio.
Despite challenges like underwater maintenance and grid integration, the project showcases Japan’s innovation in overcoming limited land-based renewable options post-Fukushima.
It positions Japan as a leader in tidal energy, potentially inspiring global adoption in coastal nations.