| 1. | Hydrogen fuel cells. | 6 | ↑ | ↓ |
| 2. | The only solution is not a new energy source, but to scale back entirely on energy consumption. There will never be a cheaper energy source than oil, and renewables cannot produce as much energy as fossil fuels. | 6 | ↑ | ↓ |
| 3. | Renewable energy, i.e. wind, solar, hydroelectric, biomass, tidal energy, geothermal. | 5 | ↑ | ↓ |
| 4. | The world can keep using oil and gas with no problems. | 4 | ↑ | ↓ |
| 5. | Ethanol fuel. | 3 | ↑ | ↓ |
| 6. | Unknown or not yet discovered energy source. (i.e. one the "oil companies have hidden away.") | 3 | ↑ | ↓ |
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