Environmental issues hydrogen economy

Tromp TK, Shia RL, Allen M, Eiler JM, Yung YL (2003). Potential Environmental Impact of a Hydrogen Economy on the Stratosphere. Science, Vol 300, Issue 5626, 1740-1742, 13 June 2003... 

The lack of a robust set of economic metrics to value hydrogen is another barrier that was mentioned. The measures used to value hydrogen (and other forms of energy) are rooted in a petroleum-based economy that does not necessarily reflect the actual costs of energy. The decisions that will lead to the incorporation of hydrogen into the energy mix will likely derive from dealing with security and environmental issues, none of which are adequately valued today. 

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