| Ken Livingstone's
green initiative is one of the targets for a German energy company. The
mayor of London is committed to buses powered by hydrogen fuel cells, a
technology developed by Proton Power Systems, which lists on the Alternative
Investment Market on Wednesday.
The company developing the fuel cells,
which generate electricity, is in talks with a UK bus manufacturer. Felix
Heidelberg, Proton's chief executive, said: "London is an attractive market
because of its commitment to fuel cells."
Transport for London is testing three
hydrogen fuel cell buses and has issued a tender for 10.

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