A Japanese company has come up with a striking idea: build a giant ring of solar panels on the moon and send the energy back to Earth. Called luna ring, the project aims to provide a constant flow of power, unaffected by weather or nighttime.
The concept comes from Shimizu Corporation., and follows the energy challenges Japan faced after the 2011 earthquake and tsunami. The goal is to explore new ways of producing electricity after many nuclear plants were shut down. Instead of relying only on Earth-based systems, the project looks to space. With the moon receiving steady sunlight, the company is proposing a setup that could generate energy around the clock.
A Massive Solar Ring Belt Around the Moon
The plan involves building a 250-mile-wide strip of solar panels all along the moon’s equator, stretching about 6,800 miles. As stated by to Shimizu Corp., the base would be made from lunar soil turned into concrete, with robots doing the construction while being controlled from Earth.
Using materials already on the moon would help avoid transporting everything from Earth. The reliance on robots also reflects how difficult it would be for humans to handle such a project directly.
“The sand on the moon is an oxide compound, so it would be possible to produce oxygen and water if hydrogen were brought from the earth. Moreover, we could produce cement by mixing water with sand and gravel to produce concrete. It would also be possible to use the heat from the sun to produce blocks and glass fiber,” explained the company.
Shimizu stated that the colossal solar ring could produce as much as 13,000 terawatts of energy. Because the moon lacks clouds and weather systems, the solar panels could function without interruption.

Sending Energy Back To Earth
Once the energy is produced, it would be transmitted using microwaves and lasers. As reported by the source, these beams would be aimed at receiving stations on Earth.
“Generate power by installing a ring of solar power cells around the equator of moon. Convert the power into microwave laser beams and transmit this energy to earth from the side of the moon that always faces the earth,” she added.
Shimizu said that the giant ring of solar panels could deliver up to 13,000 terawatts of power. Since there are no clouds or weather on the moon, the solar panels could operate continuously.

Big Challenges Still On The Table
There are still many open questions. According to the source, the cost of such a project has not been addressed, even though the scale and distance make it extremely complex. Other issues include dealing with lunar dust, which could interfere with machines and cover the solar panels, and the need for international cooperation.
The company mentions that construction could begin as early as 2035, but many details remain unclear. The project might also be more of a concept than a concrete plan. It shows how far some ideas are going when it comes to rethinking how energy could be produced in the future.
