Space X has launched a prototype space-based solar power (SBSP) solar energy gathering satellite—this will try to collect solar energy for eventual transfer to earth.
This article from Inverse makes the following points:
- This SBSP will test a microwave array for transferring power to earth.
- Light-weight solar panels were developed that were light enough to be launched into space.
- The project is being funded by the Donald Bren Foundation and will eventually exceed 100 million USD.