Solar power satellites capture solar energy via large photovoltaic arrays in space. The energy is transmitted to Earth as a microwave or laser beam and converted into electricity via rectennas. Space-based solar power has advantages over ground-based solar like continuous power without night or weather effects. It also avoids using land area and has no variation in power supply. Developing space solar power would require high initial costs but could provide clean, renewable base-load electricity for the future without relying on exhaustible resources.