Ann Rendahl was appointed to serve as a commissioner of the Washington Utilities and Transportation Commission by Gov. Inslee in December 2014 for a term ending Jan. 1, 2021. 

Ann currently serves as Vice-Chair of the Electricity Committee and a member of the Critical Infrastructure Committee for the National Association of Regulatory Commissioners (NARUC).

Ann serves as a co-vice chair of the Committee for Regional Electric Power Cooperation, or CREPC, a joint committee of the Western Interstate Energy Board and the Western Conference of Public Service Commissioners. She serves as a member of the Body of State Regulators for the California ISO's Energy Imbalance Market, having served as the chair, vice chair, and currently as a voting member of the EIM Nominating Committee. Ann also serves as the chair of the Western Electric Coordinating Council's Western Renewable Energy Generation Information System Committee. Ann has been appointed to serve as a member of the Electric Power Research Institute's Advisory Council through August 2022.

Ann previously served as the Director of Policy and Legislation for the UTC. Prior to leading the UTC's Policy and Legislative Affairs Section, she served as the Director of the Administrative Law Division, as an administrative law judge for the UTC, and as an assistant attorney general representing the Utilities and Transportation Division. 

Ann is a graduate of Wellesley College and received a master's degree in Public Policy from the Graduate School of Public Policy at the University of California, Berkeley. She received her law degree from Hastings College of the Law, University of California, San Francisco.