The following is a list of alternative fuels in alphabetical order. This will include things that aren't truly "fuel" but are different sources of energy, as well as fuels that aren't considered "alternative" so that you can see how they compare. Carbon and other impacts will be rated in comparison to other items on the list; the highest environmental impacts on this list are not the chemicals that have the largest impact on the environment overall.
| Type of Energy | AKA | Carbon Impact | Other Impacts | Chemical Example |
|---|---|---|---|---|
| Alcohol | ||||
| Biodiesel | B100 | High | Low | C17H34O2 |
| Diesel | High | High | C12H23 | |
| Ethanol | Ethyl Alcohol | Moderate | Mixed | C2H5OH |
| Flywheel | Gyroscopic Battery | Near 0 | Low1 | Metal |
| Gasoline | Petrol | High | Mid-High | C8H18 |
| Hydrogen | Little to None1 | Minimal1 | H2 | |
| Lithium-Cobalt Battery Electric | LiCo Batteries | Minimal | High | LiCoO2 |
| Natural Gas, Compressed | CNG | CH4 | ||
| Natural Gas, Liquid | LNG | CH4 | ||
| Natural Gas, Renewable | RNG | Negative2 | Minimal to Beneficial | CH4 |
| Uranium | Nuclear | Near 0 | It's Complicated | 235U |
| Propane | Moderate | Moderate | C3H8 |
- Environmental impacts vary based on production, and in some cases may be able to be reduced to negligible impact one day.
- Natural gas recovered from sources that would otherwise pollute via methane emissions can be turned into a fuel that produces carbon emissions that are less harmful than the unused methane.
This list may be missing some fuels, but some fuels are just more specialized versions of fuels listed already, or are a blend (like E15, a blend of ethanol and gasoline) of fuels. This list currently contains 13 items.