Solar power satellites are large spacecraft designed to collect solar energy in space and transmit it back to Earth. They capture sunlight using solar panels and convert it into electricity, which can then be sent to power stations on the ground through microwave or laser beams. This technology aims to provide a continuous and renewable energy source, unaffected by weather or time of day. The concept of solar power satellites has been explored since the 1970s, with various organizations, including NASA and the European Space Agency, conducting research. If successfully developed, these satellites could significantly reduce reliance on fossil fuels and help combat climate change.