Chris Miller, Senate Majority Leader Harry Reid’s (D-NV) top energy aid, announced December 3 that he is leaving Capitol Hill. Mr. Miller has worked for numerous top Democrats throughout his more than 20 years on the Hill.

Senate Energy and Natural Resources Committee ranking member Lisa Murkowski (R-AK) has hired three new aides for the next Congress and is welcoming back Brian Hughes, who left the panel in June to work on Mitt Romney’s campaign. Mr. Hughes will continue to work on alternative fuels, biofuels, biomass, and vehicles. Kate Williams is rejoining the committee after working with the Alaska Oil and Gas Association; she previously worked for the late Senator Ted Stevens (R-AK), and will handle oil and gas issues. Lucy Murfitt moves to the committee from the office of retiring Senator Jon Kyl (R-AZ), where she served as his legislative counsel for energy, environment, and natural resources since 2009; she will manage public lands issues. Ron Faibish will be a nuclear fellow from Argonne National Laboratory, handling nuclear and science issues on the panel; he was a program manager for the lab’s Nuclear Engineering Division.

House Energy and Commerce Chairman Fred Upton (R-MI) has picked Tom Hassenboehler, vice president of policy development and legislative affairs at America’s Natural Gas Alliance, to be his senior aide on energy and environmental issues. Mr. Hassenboehler is a former counsel on the House Energy panel who also worked for Senator Jim Inhofe (R-OK) on the Senate Environment and Public Works Committee; he replaces Maryam Brown, who left the panel to be the top energy and environment aide for House Speaker John Boehner (R-OH).