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It's only partly BS, depending on how you interpret it. There is no doubt that you need more energy creating the hydrogen than you get from burning it and if they claim that sea water is an endless source of energy with hydrogen virtually creating itself, then it's BS. But... Hydrogen is recognised as the cleanest fuel that you could possibly run a combustion engine on and it produces no green house gases whatsoever. The problem today lies in creating enough hydrogen to make it a realistic option to fossil fuels. up until quite recently hydrogen has been created through a chemical process, adding a catalyst to water and collecting the gas. If the same thing could be accomplished using electricity we have a whole new range of options. We could create hydrogen using renewable sources of energy such as wind or water powered turbines, or even nuclear power that, apart from storing the nuclear waste, is very clean. At least with regards to green house gases. If, and I say IF, hydrogen could be created using renewable sources of energy and IF most combustion engines could be powered with hydrogen instead of fossile fuels, much is gained.
/Hampus
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