Susan F. Tierney (born 1951) is an American academic and government administrator of energy policy.
[1] Tierney worked as an assistant professor at the University of California, Irvine from 1978 to 1982 and as a researcher for the National Academy of Sciences in 1982.
[2] From 1982 to 1993, Tierney held a variety of positions in the government of Massachusetts, including as Executive Director of the Energy Facilities Siting Council, Commissioner of the Department of Public Utilities, and Secretary of Environmental Affairs.
During this period, she was on leave from her position as a managing principal and energy and economics consultant with the Analysis Group[3] since 2003.
Tierney was expected to be named Deputy Secretary of Energy[4] under President Barack Obama, until she withdrew her candidacy for the position in March 2009.