Oil
it is one of the leading ones
Biomass is the source of almost half of America's renewable energy.
Wind turbines and solar pans
No, coal is.
Fire is not a source of energy it is a manifiestion of the release of energy.
Coal is the most used source for electricity in the US. World wide, other countries, I don't know.
Its coal and hydrogen
For us here on Earth, the prime source of energy is the Sun.
The nuclear fusion is not used now as a source of energy; probable possible in a far future.
coal was used to build lamp posts and used for machines in factories
Wind
Coal.