Space-Based Solar Power Station China
China hopes to soon build a space-based solar power station positioned in a geostationary orbit about 22,370 miles above Earth. This station will span roughly 0.6 miles wide when completed, and aims to harness solar energy without having to deal with weather, night-time darkness, or atmospheric interference.



The main idea is to collect sunlight, which is far more intense in space (offering energy density up to 10 times greater than on Earth), convert it into microwave radiation, and then beam it back to Earth for use as a continuous power source. This also means the setup doesn’t require a 20,000-mile-long wire, but instead, the energy will be wirelessly transmitted via microwaves to ground-based receivers.

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What’s interesting is that the project is being spearheaded by experts like Long Lehao, a rocket scientist from the Chinese Academy of Engineering, who compares its significance to relocating the Three Gorges Dam (the world’s largest hydroelectric power station) into orbit. As for the timeline, small-scale tests will take place in the stratosphere between 2025 to 2029, a megawatt-scale station by 2030, and a commercial gigawatt-scale plant by 2050.
[Source]