Fuel cells that use more corrosive fuels or process will often degrade quickly or if a fuel cell is forced to operate at significantly high temperatures. Studies were conducted by the United States Department of Defense on fuel cells. The DoD installed fuel cell stationary power generators in facilities across the United States. Ranging from the East Coast to the West Coast, the fuel cell systems underwent a variety of tests. The DOD was, however, primarily interested in expenditures.
Expenditures also vary between types of fuel cells.
Yet another expenditure which is not as easily observable is the effects of pollution of cities. One can see that a with significant reductions in emission the savings to California residents would be tremendous. As with most alternative energy sources, the potential of fuel cells to provide clean , reliable , ecologically benign energy is the strongest selling point. In sacrificing income and capital, the individual gains the benefits of a cleaner environment , reduced noise pollution , and more aesthetically pleasing surroundings. With the lack of moving parts the noise of fuel cell machines typically results from the conversion of energy to mechanically work.