For me, the definitive critique of space-based solar power was written in 2012, by Tom Murphy. https://dothemath.ucsd.edu/2012/03/space-based-solar-power/ https

For me, the definitive critique of space-based solar power was written in 2012, by Tom Murphy. https://dothemath.ucsd.edu/2012/03/space-based-solar-power/ https://dothemath.ucsd.edu/2012/03/space-based-solar-power/ I haven't followed developments in solar cells or power transmission closely, but I get the sense that there's only been minor, incremental, improvements. The math still doesn't work.