Fuel Cells

Quiet, with low emissions and few moving parts, fuel cells are now regarded as 'clean air' alternatives to diesel generators

In many ways fuel cells can be regarded as power generators. However, whereas conventional generators use internal combustion engines to rotate an alternator, fuel cells generate power by producing electrons directly, with few moving parts. As a result, they have the potential to be very efficient and reliable.

Moreover, fuel cells are comparatively quiet and, other than electricity and heat, they produce only water vapour. This makes them ideal for indoor use, meaning that the generated power can be close to, or inside the computer room.

In a direct comparison with diesel generators, the capital cost of fuel cells is higher but, as with every new technology, these costs are now falling. However, because of the absence of moving parts, fuel cells are considerably less expensive to maintain than generators.

Where fuel cells really come into their own is where generators are not an option. This could be because of limited space or the inability to obtain planning permission, or where organisations have environmental policies that focus on improving air quality and reducing carbon-based emissions. Factors that weigh heavily in their favour are: reduced footprints, extended runtimes and lower life-time costs.