The Hydrogen Economy Opportunities, Costs, Barriers, and R&D Needs (2004) / Chapter Skim
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Appendix F: U.S. Energy Systems
Appendix F: U.S. Energy Systems
Pages 194-197
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From page 194... ...
is equal to States was self-sufficient in petroleum roughly 50 years ago, the hydrogen that would be required to fuel the light-duty veafter which demand outpaced domestic production and the hicles postulated to be operating in 2028 (see Figure 6-3 in United States began to import growing volumes of petro- Chapter 6 of this report)
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160,000 140,000 120,000 Resources Reserves 100,000 Btu illion 80,000 Quadr 60,000 40,000 20,000 0 Crude oil Natural gas Coal FIGURE F-1 World fossil energy resources.
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From page 196... ...
peratures, shipping it via insulated tanker ships, and reheat- In 2002, approximately 92 percent of all coal produced in ing it at the port of entry, a technique which is also vulnerable the United States -- that is, about 982 million st -- was used
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Hydrogen is somewhat easier to store and, as disCurrent problems with the further use of nuclear power in cussed elsewhere in this report, hydrogen could be used in the United States include economics -- costs for new nuclear conjunction with the electric system as backup storage, so power plants are above current market acceptability -- and that hydrogen would be generated at times of ample power public acceptance, which may have moderated in recent in a reversible fuel cell and reconverted as needed (see Chapyears but remains to be tested. ter 8 and Appendix G in this report)
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