Renewable or Non-Renewable
Hydrogen is a renewable energy source. When we burn hydrocarbon compounds, the hydrogen is liberated in the form of water vapors or hydrogen compounds.
Hydrogen is used to power cars!
Who uses Hydrogen?
Hydrogen was formerly used for filling balloons, airships, and other lighter-than-air craft, a dangerous practice because of hydrogen's explosive flammability; there were disastrous fires, e.g., the immolation of the German airship Hindenburg at its mooring at Lakehurst, N.J., in 1937.