This is a very interesting concept of propulsion. The “Lightcraft” is a laser-propelled spacecraft, flying saucer concept that could ultimately run on other beamed energies, such as microwave. Video includes NASA concept of propelling craft using helium for initial liftoff, then power is supplied by a beam of microwaves
The Solar Roadways project is working to pave roads with solar panels that you can drive on. This is an excellent project that could produce enormous amounts of environment friendly electricity, with enhanced safety features built into roadways. A video worth watching.
This video demonstrates solar power producing hydrogen. The hydrogen is then stored to create 24hr free energy electricity. Hydrogen production using electrolysis is one option for collecting energy from the sun. Also includes a brief explanation of fuel cells