Though seldom noticed, hydrogen is an extremely important element in the world's chemistry. The ability to act as a fuel, both for combustion and electricity production, has prompted a small but enthusiastic group of engineers, activists and businesses to promote the conversion to a hydrogen based economy. The use of hydrogen is compatible with nature, rather than intrusive. We will never run out of hydrogen. Obtained in this manner, hydrogen is, in theory, limitless.
Fossil fuels are finite.
Pure hydrogen has none of the toxic emissions such as sulfur, or oxides of carbon and nitrogen, linked to fossil fuels . Production of hydrogen itself remains challenge. Because pure hydrogen must be derived from other sources, obtaining it requires energy and can have environmental impacts. Reformers processing natural gas, for example, tend to produce carbon dioxide. The hydrogen could ultimately be used to generate electricity and heat, returning water to the process.