While the technology for these electrochemical power plants has
existed since 1839, only recently have fuel cells gained popular
recognition and come under serious consideration as an economically
and technically viable power source.
Further more, fuel cells are considered a prime candidate for 'green'
energy production: clean, quiet, and efficient. Despite their relatively
new arrival on the popular scene, fuel cells have already found
their way into early commercial testing in stationary (building)
applications and prototype testing in mobile and portable applications.