Taken with permission from the U.S. Department of Energy Website [4].
Original source: U.S. Department of Energy, Energy Efficiency and Renewable Energy, Hydrogen Baseline Knowledge Assessment Surveys, 2004. General public survey, N=889. Student (ages 12-17 years) survey, N=1,000. Government officials, N=246.
Note: the End Users category includes persons involved with transportation services, businesses needing uninterrupted power supplies, and industries with large power requirements.

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