China tests first practical submarine solar power plant at 10 metres depth in the open sea

South China Morning Post - Sep 21, 2026

In a breakthrough that could power the future of underwater operations, Chinese scientists have built and tested the world’s first submarine solar farm, successfully operating a perovskite-based photovoltaic system at a depth of 10 metres (33 feet) in the open sea. The submerged array charged batteries and powered a LED panel, proving that solar energy can be harvested even in the dim, blue-green twilight of the ocean. The achievement by a team from Yunnan University, published on September 11,...

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