Part 4/7:
While the theoretical groundwork for space-based solar power exists, practical challenges remain formidable. Two prospective methods for beaming energy down to Earth have been proposed:
- Microwave Beams from Geosynchronous Orbits: These satellites, stationed roughly 35,000 kilometers above Earth, could beam energy using microwaves that are relatively unaffected by atmospheric conditions. However, deploying effective satellites of this scale presents significant logistical challenges. With designs weighing up to 80,000 tons and requiring large antennas and mirrors, the cost and engineering hurdles become considerable. The energy beam would dissipate over distance, necessitating a massive ground receiver, all while remaining operational in a high-unreachable orbit.