Timothy Duffy is currently the Senior Director of NYPA’s Market Issues Group, responsible for coordinating NYPA’s interactions with the New York Independent System Operator. Tim joined NYPA in Juine of 2025 after a combined 23 years of service with the NYISO. While with NYISO, Tim managed multiple departments, including Load Forecasting, Economic Planning, Market Mitigation and Analysis, Process Improvement, Compliance, and Customer Settlements. Tim has also served on the management teams of the European Network of Transmission System Operators – Electric (ENTSO-E and ICF Consulting. He holds an undergraduate degree from the University of Virginia and an MA in Economics from George Mason University.