Touring the National Renewable Energy Laboratory by U.S. Department of Energy ● portfotolio

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U.S. Department of Energy: Acting Secretary Daniel Poneman, U.S. Department of Energy

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U.S. Department of Energy: Acting Secretary Daniel Poneman, U.S. Department of Energy, control center ESIF

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U.S. Department of Energy: Acting Secretary Daniel Poneman, U.S. Department of Energy

©

U.S. Department of Energy: Acting Secretary Daniel Poneman, U.S. Department of Energy

©

U.S. Department of Energy: Acting Secretary Daniel Poneman, U.S. Department of Energy