Chinese scientists plan to build a colossal 0.6-mile-wide solar power station in space, designed to beam energy back to Earth, likened to an orbital “Three Gorges Dam
China has unveiled an ambitious plan to harness solar power from space, marking a transformative step in energy innovation. The project, likened to a “Three Gorges Dam above Earth,” promises continuous power collection unaffected by weather or darkness.
A Visionary Energy Project China aims to build solar stations in space using super-heavy rockets. Senior scientist Long Lehao detailed the plan during an October lecture at the Chinese Academy of Sciences. The project involves installing a 1 km-wide solar array in geostationary orbit, 36,000 km above Earth.
China’s 1km-wide solar array in space is expected to collect as much energy in a year as the total amount of oil that can be extracted from the Earth
Renewable energy, crucial for the energy transition and attaining net zero status, is broadening its horizons in application.
Solar panels, for instance, harness the sun’s energy to generate electricity through the photovoltaic effect, turning light energy into usable power.
China’s solar venture in space
Space-Based Solar Power (SBSP or SSP), the concept of gathering solar power in space using solar power satellites (SPS) to send it back to Earth, may sound like science fiction, but it is getting closer to reality.
China plans to build a 1km-wide solar array in the geostationary orbit about 36,000km above Earth.
At this distance from atmospheric interferences such as day-night cycles and changing weather, the array will constantly gather solar energy, anticipated to surpass terrestrial photovoltaic systems by more than tenfold in efficiency.
Once collected, this energy will be transformed into microwaves and transmitted to a ground-based collector station.
China, which is building the world’s largest dam on the Brahmaputra River in Tibet, has announced another mega project to harness solar energy. The dragon has named the new initiative ‘Three Gorges Dam Project in Space’. Its blueprint has been designed by China’s famous rocket scientist – Long Lehao
Under this project, a massive solar panel measuring one kilometre wide will be deployed in the geostationary orbit, which is located 36,000 kms above Earth. This panel will continuously collect solar energy. Interestingly, the day-night cycles or weather conditions will not effect the panel from collecting the solar energy.
Long compared the energy from this project to China’s Three Gorges Dam, which produces about 100 billion kWh of electricity each year
Long said, “We are working on this project. It’s as significant as taking the Three Gorges Dam to a geostationary orbit 36,000 km (22,370 miles) above Earth. This is a remarkable project we are eagerly awaiting. The energy gathered in a year would be equivalent to all the oil that can be extracted from the Earth.”
The project will require specialised technology. To support such a vast structure, China will need to develop super-heavy rockets. This includes two types – the CZ-5 rocket, which is about 50 meters long, and the CZ-9 rocket, which can reach up to 110 meters. These rockets will be used in the construction of space-based solar energy stations.
It is to be noted that, space-based solar energy stations that collect solar power in Earth’s orbit and transmit it to the ground station have long been discussed in scientific circles. It is also referred as the ‘Manhattan Project’ of the energy sector. This idea has been a topic of conversation among scientists for decades.
This mega project has the potential to bring a revolution in the energy sector. China’s current plans and its steps toward actualising them appear serious.
However, there is no information available regarding the cost and technical challenges of the project.
It will be interesting to see how China brings this ambitious project to fruition.
Will be installed in geostationary orbit at a distance of 36000 km above the earth
In the report, quoting the statement of Chinese rocket scientist and Chinese Academy of Engineering (CAE) member Long Lehao, it has been said that work on this project (Three Gorges Dam in Sapce) is still going on, it is equally important to win. To take 3 Gorges Dam into geostationary orbit 36,000 km above the Earth. This is an incredible project, the whole of China is eagerly waiting for it.
You will get so much energy that all the oil on earth will be exhausted.
Last October, in a seminar organized by CAS i.e. Chinese Academy of Sciences, rocket scientist Long had said that imagine that a 1 km wide solar chain is established in geostationary orbit 36,000 km away from the Earth… this will provide as much energy in a year as the Earth. Complete oil can be extracted from it
How is this project being prepared?
As incredible as this project sounds, the details of its completion are even more surprising. For this project, first of all the material required to build this dam will have to be transported in space and that material will be carried by a heavy rocket. For this, China is using its March-9 (CZ-9) rocket.
Will use. If you look at this-
1- The launch capacity of the CZ-9 rocket is about 6,000 tons and its take-off weight is more than 4,000 tons.
2- This rocket can carry a load of up to 150 tons from the Earth to the lower Earth orbit.
3- This capacity of this rocket is more than the US Space Agency NASA’s Saturn V and Space Launch System (SLS) heavy-lift rockets, which have a capacity of 130 tons.
4- The diameter of this rocket CZ-9 is 10.6 meters i.e. about 34.7 feet, which is much larger than the 5 meter diameter of CZ-5.
5- The height of CZ-5 itself is about 50 meters, while the height of CZ-9 is 110 meters.
6- A major use of this rocket will now be the construction of solar power stations being built in space.
Let us tell you that in June 2021, China started building its first experimental space solar power station in Bishan, Chongqing. These projects focus on demonstration and validation of technologies such as space solar energy generation, wireless microwave energy transmission and space communication networks.
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