23/05/2025
Japan is a way ahead at Solar energy transmission 👏😎
Japan's OHISAMA Project, spearheaded by Japan Space Systems, aims to revolutionize renewable energy by transmitting solar power from space to Earth.
Scheduled for launch in 2025, the OHISAMA satellite will collect solar energy using a 2-square-meter photovoltaic panel and convert it into microwave energy.
This energy will then be beamed to ground-based receivers in Suwa, Japan, covering a 40-kilometer area .
While the initial output is modest—about 1 kilowatt, enough to power a small household appliance for an hour—the project serves as a critical proof of concept.
Operating from low Earth orbit at approximately 400 kilometers altitude, the satellite will demonstrate the feasibility of continuous, weather-independent energy transmission .
The OHISAMA Project builds upon decades of research in space-based solar power (SBSP), a concept first proposed in 1968. Advancements in lightweight materials, microwave transmission, and reusable launch technologies have made SBSP more attainable .
Japan envisions future large-scale solar power satellites in geostationary orbit, each capable of generating up to 1 gigawatt of electricity, providing a reliable and clean power source unaffected by Earth's weather or rotation .
This initiative not only positions Japan at the forefront of clean energy innovation but also offers a potential solution for energy needs in disaster-stricken or remote areas, aligning with global efforts to reduce greenhouse gas emissions and combat climate change.
