“[japanese project] aims to spend the next four years developing the technology needed to beam the electricity produced to earth”
The sun, a legacy technology, already ‘beams’ energy to Earth.
“They expect that as fossil fuels run out”
Instead of using economical, practical technology like oh say nuclear power plants (for energy and desalinization) they opt to pursue a four square kilometer pie in the sky.
Fossil fuels are another form of solar energy.