Already heard and does it sound like science fiction? According to the results of a 3-year study with 10 involved nations conducted by the International Academy of Astronautics, it could be a reality within 10 years.
The biggest drawback of solar energy today is that it doesn't work in the evening or when the sky is cloudy: in space, on the contrary, the Sun is present 24/24. No storms, no clouds. The obvious solution to the problem, therefore, is to move all the photovoltaic capacity into orbit: the International Academy of Astronautics is studying the system that can best meet this need in the shortest possible time.
The plans developed by the association include a lot of solar panels in orbit on the equator, capable of collecting energy from the sun and sending it to Earth: a few dozen plants would provide more energy than the planet's current needs.
According to the Research, we already have the technology to develop such a project within 10 years, and to make it economically viable within 30 years. It is clear that one thing is to have abstract possibilities, one thing is to have the money to make them happen: however, the increase in private space flights and an improvement in the world economy (heck, it can't rain forever) could lower costs. and allow this enormous result within 20 years, at the 'modest' price of a few tens of billion euros.