For energy to be available there must be a region with high energy level and a region with low energy level. (engineeringtoolbox.com)
I think it may take some period of time for the scientific community to absorb, digest, and accept the possibility of lower energy states of hydrogen. (scientificamerican.com)
American industry would have the further advantage of lower energy costs as it would not have to pay for its emissions, or bear the costs of complying with a carbon trading scheme. (newscientist.com)