A senior Chinese scientist has revealed an ambitious plan to use super heavy rockets to build solar power stations in space, calling it “another Three Gorges Dam project above the Earth”.
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Space-based solar power stations collect energy from the sun in Earth’s orbit and transmit it to the ground, providing continuous power. This is referred to internationally as the “Manhattan Project” of the energy sector.
Space-based solar stations can collect energy without being affected by seasons or day-night cycles. Also, the energy density is much higher in space – about 10 times the average on the Earth’s surface.
“We are working on this project now. It is as significant as moving the Three Gorges Dam to a geostationary orbit 36,000km (22,370 miles) above the Earth. This is an incredible project to look forward to,” said Long Lehao, a rocket scientist and member of the Chinese Academy of Engineering (CAE).
The Three Gorges Dam in central China is the world’s largest hydropower project. Located in the middle reaches of the Yangtze, China’s longest river, the dam has an annual power generation capacity of about 100 billion kWh.
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“Imagine installing a solar array 1km wide along the 36,000km geostationary orbit. The energy collected in one year would be equivalent to the total amount of oil that can be extracted from the Earth,” Long added as he delivered a lecture hosted by the Chinese Academy of Sciences (CAS) in October. The transcript of his speech was released by the academy on December 28.