A research team from Yunnan University has reported the successful deployment and testing of the world’s first practical submarine solar power plant. According to findings published on September 11, the system utilizes perovskite-based photovoltaic technology to generate electricity while submerged at a depth of 10 meters (33 feet) in the open sea.

During the trial, the submerged solar array successfully harvested energy from ambient light, which was then used to charge batteries and power an LED panel. This experiment serves as a proof-of-concept for the viability of solar energy in underwater environments, where light levels are significantly lower than on the surface. The use of perovskite materials is notable, as these are often cited in scientific literature for their potential to be more efficient and cheaper to produce than traditional silicon-based solar cells, though they face challenges regarding long-term stability in harsh environments.

While the report highlights the technical success of the test, it does not detail the specific long-term durability of the materials under high-pressure, saltwater conditions, nor does it provide a timeline for scaling the technology for broader industrial or military applications. The achievement represents a significant step in exploring renewable energy sources for underwater operations, which have historically relied on battery power or cables connected to surface vessels.