UK-based tidal energy company Proteus Marine Renewables’ (PMR) 1.1 MW tidal energy turbine, the AR1100, has received certification from Japan’s Ministry of Economy, Trade and Industry (METI), confirming the system meets national standards for grid-connected power generation. The turbine is now operational and delivering electricity to the Japanese national grid.

According to PMR, METI’s approval followed a series of performance tests covering safety, grid compliance, shutdown procedures, and emergency response systems. Certification marks a regulatory milestone for the deployment of large-scale tidal energy systems in Japanese waters.