br br br br br Alternative fuels become more and more popular and both people and businesses are affected. Luckily, this spread is positive for all; it will benefit consumers, the environment and even businesses. In the end, the spread of alternative fuels should only be encouraged by all of us. There is a difference between fuels such as petroleum, coal, natural gas and alternative fuels. Most fuels are possible sources of chemical energy that can be used to power engines or heat buildings. A fuel is actually a way to store possible stable energy that can be easily conveyed from its place of output to its place of use.