Professor Joskow has been a director of Exelon since July 23, 2007. Professor Joskow is the Elizabeth and James Killian Professor of Economics and Management at the Massachusetts Institute of Technology (MIT) and Director of the MIT Center for Energy and Environmental Policy Research. He joined the MIT faculty in 1972 and was the Head of the MIT Department of Economics from 1994-1998. He became President of the Alfred P. Sloan Foundation on January 1, 2008. He is a director of TransCanada Pipelines Limited and a Trustee of the Putnam Mutual Funds.