Solar Power in Space?

Space-based solar power SBSP is a concept for a revolutionary energy system. It involves placing into orbit stupendously large orbital power plants kilometers across which collect the sun s raw energy and beam it down to where it is needed on the earth. In theory, SBSP could scale to meet all of humanity s energy needs, providing virtually unlimited green, renewable power to an energy-hungry world. Most renewable energy schemes suffer from intermittency and low energy density, requiring vast amounts of land and extensive storage as well as fossil fuel backup systems. Not so with SBSP systems. When placed in orbit where the sun shines constantly, they can deliver stable, uninterrupted, 24-hour, large-scale power to the urban centers where the majority of humanity lives. A network of thousands of solar-power satellites SPS could provide all the power required for an Earth-based population as large as 10 billion people, even for a fully developed first world lifestyle but without the environmental downsides of nuclear or coal.