Abstract: The world need to find new sources of clean energy. Space solar power gathers energy from sunlight in space and transmits it wirelessly to earth. Space solar power can solve our energy and greenhouse gas emissions problems. The new millennium has introduced increased pressure for finding new renewable energy sources. The exponential increase in population has led to the global crisis such as global warming, environmental pollution and change and rapid decrease of fossil reservoirs. Space based solar power is the concept of collecting solar power in space for use in earth. It has been in research since the early 1970s.

Keywords: Microwave transmitter, Space debris, Solar concentrator, Solar energy, Solar power satellite.