I’d like this one a lot better if the US Department of Defense weren’t promoting this power generation solution as useful for supporting troops in, or rather, near combat zones….

Scientists are saying that within 40-some years the cost of launching gear into space will have dropped enough for it to be feasible to build giant solar collectors in geosyncronous orbit that beam energy back to earth via lasers or microwaves. Ground stations convert the beams back to electricity for the grid.