Ms Nelson was appointed as a director in November 2014. She is Chairperson of the Risk Committee, and is a member of the Audit Committee and the People & Culture Committee. Ms Nelson is an experienced director, having served as a board director of ten corporations over more than 25 years. Through her company, PTI Resources, LLC, Ms Nelson consulted on a variety of environmental and energy policy matters from 2005 to 2019. A global operations executive, Ms Nelson was the former founding president of Midwest Generation EME, LLC, an Edison International company, and senior vice president of worldwide operations for Edison Mission Energy. Ms Nelson serves as a director of three publicly traded U.S. corporations: Cummins Inc, a global engine and equipment manufacturer, Ball Corporation, a global metals container manufacturing company, and Custom Truck One Source, a leading provider of specialised truck and heavy equipment solutions to the utility, telecommunications, rail and infrastructure markets in North America. Ms Nelson received a Bachelor of Science from Pepperdine University and a Master of Business Administration from the University of Southern California.