Pending nominations of Brouillette, Chatterjee and Powelson : hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, first session, on the nominations of the Honorable Dan R. Brouillette to be Deputy Secretary of Energy and Neil Chatterjee and the Honorable Robert F. Powelson to be members of the Federal Energy Regulatory Commission, May 25, 2017.