"technologies to convert solar energy to electrical power efficiently."
https://www.nasa.gov/mission_pages/station/structure/elements/solar_arrays-about.html
"Solar technologies convert sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. This energy can be used to generate electricity or be stored in batteries or thermal storage."
https://www.energy.gov/eere/solar/how-does-solar-work
"The power source was a black box of radio tubes, in the glove compartment. The box had an antenna sticking out. Tesla would fool with some tuners and tune in the right frequency and got 240 volts delivered through the air to his car. The car ran almost silent."
https://waterpoweredcar.com/teslascar.html
"the source of energy that powered Tesla’s electric car in 1931 was energy harvested from EM waves that is everywhere"
Tesla used an antenna to capture this free energy"
https://www.apparentlyapparel.com/news/nikola-teslas-black-magic-wireless-touring-car