What are five sources of commercial energy?

Question

What are five sources of commercial energy?

[10 points to first best answer]

Answer 1

1. oil

2. coal

3. natural gas

4. biomass

5. renewable energy

Answer 2

In order of the predominance of current usage in the USA, the top 5 are:

Natural Gas

Coal

Nuclear

Hydroelectric

Oil

Answer 3

1. fossil fuel

2. hydro-energy

3. solar power

4. bio-fuel

5. wind energy

6. nuclear power

7. fuel cell energy

Answer 4

windmills, dams creating electric through turbines,geothermal, using wells for heating & cooling burning coal or fossil fuels, & nuclear powerplants