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
Coal.
For us here on Earth, the prime source of energy is the Sun.
Wind
coal was used to build lamp posts and used for machines in factories
The nuclear fusion is not used now as a source of energy; probable possible in a far future.