End notes

1 A heat engine becomes more efficient the hotter it is run.

2 This efficiency is achieved by the alkaline fuel cell burning hydrogen. The theoretical maximum efficiency for a fuel cell using hydrogen is 83%.

3 International Fuel Cells is a joint venture between United Technologies and Toshiba.

4 Fuel Cell Market Survey: Large Stationary Applications, Mark Cropper, Fuel Cell Today, September 2003.

5 The electrolyte is usually a mixture of sodium carbonate, potassium carbonate and lithium carbonate.

6 Refer supra note 4.

7 The domestic units should be available before this.

8 Refer supra note 4.

9 Refer supra note 4.

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