Shimizu's Dream: Lunar Solar Power Generation -LUNA RING-

The Energy Paradigm Shift Opens the Door to a Sustainable Society

A shift from economical use of limited resources to the unlimited use of clean energy is the ultimate dream of all mankind.

These concept plans are projects for future generations years….years down the road. But if we do not dream big, our achievements will surely reflect this. The
LUNA RING, our lunar solar power generation concept, translates this dream into reality through ingenious ideas coupled with advanced space technologies.
Virtually inexhaustible, non-polluting solar energy is the ultimate source of green energy that brings prosperity to nature as well as our lives.
Shimizu Corporation proposes The LUNA RING for the infinite coexistence of mankind and the Earth.

How lunar solar energy reaches the earth
Transmitting energy from the moon to the earth
Exploiting lunar resources

Lunar resources will be used to the fullest extent possible in constructing the Solar Belt.
Water can be produced by reducing lunar soil with hydrogen that is imported from the Earth. Cementing material can also be extracted from lunar resources. These materials will be mixed with lunar soil and gravel to make concrete. Bricks, glass fibers and other structural materials can also be produced by solar-heat treatments.

The solar belt along the lunar equator
The solar belt configuration

1. Lunar solar cells
To ensure continuous generation of power, an array of solar cells will extend like a belt along the entire 11,000km lunar equator. This belt will grow in width from a few kilometers to 400km.
2. Electric power cables
The cables will transfer the electric power from the lunar solar cells to the transmission facilities
3. Microwave power transmission antennas
The 20km-diameter antennas will transmit power to the receiving rectennas. A guidance beacon (radio beacon) brought from the Earth will be used to ensure accurate transmission.
4. Laser power transmission facilities
High-energy-density laser will be beamed to the receiving facilities. A guidance beacon (radio beacon) brought from the Earth will be used to ensure accurate transmission.
5. Transportation route along the lunar equator
Materials needed for the construction and maintenance of the Solar Belt will be transported along this route. Electric power cables will be installed under the transportation route.
6. Solar cell production plants
The plants will move automatically while producing solar cells from lunar resources and installing them.
http://www.shimz.co.jp/english/theme/dream/lunaring.html

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