Skip to Main Content
ajax loader animation
ajax loader animation

Corporate Leadership

Stuart Nachmias

President and chief executive officer of Con Edison Transmission

In his current role, Mr. Nachmias leads Con Edison’s wholesale transmission business, which is focused on bringing clean energy from where it is produced to where it is needed to meet customers’ energy needs.

Mr. Nachmias joined Con Edison in 1988 and has spent the majority of his career with the company, holding a variety of positions.

Before taking on his current position, he was vice president of Energy Policy and Regulatory Affairs where his responsibilities included development of strategies to implement federal and state electric and gas policies such as clean energy policies in support of New York State’s clean energy goals and the New York State Public Service Commission’s Reforming the Energy Vision (REV) proceedings. In this regard, he led the company’s efforts working with federal and state energy regulators, Northeast independent system operators (ISOs) and regional transmission operators (RTOs), including the New York Independent System Operator (NYISO), trade associations such as the Edison Electric Institute (EEI) and the American Gas Association (AGA), and other active energy policy groups. Mr. Nachmias has also worked in Con Edison’s Customer Operations, Corporate Planning, Economic Development Planning and Electric Forecasting departments, and was director of marketing for the unregulated affiliate Con Edison Solutions.

Mr. Nachmias is also chairman of New York Transco, a New York utilities electric transmission partnership, and represents Con Edison Transmission on its other projects’ boards. He also serves on the boards of the Tenement Museum and the Queens County Farm Museum in New York City.

He holds a master’s degree in business administration with a finance concentration from Baruch College and a bachelor’s degree in economics and psychology from Binghamton University. He received an advanced certificate in energy management from New York Institute of Technology, completed a PTI distribution system engineering course, and has taken executive education courses at Harvard Business School and the Wharton School at the University of Pennsylvania.

Timothy Frost

Vice president of Electric Transmission for Con Edison Transmission

Mr. Frost was involved with establishing Con Edison Transmission. In his current role he is responsible for developing electric transmission.

Previously, Mr. Frost was director of Strategic Planning where he was responsible for business development and M&A. He was involved with corporate portfolio reviews, establishing the long-range planning process, and involved in establishing each of the CEI competitive business subsidiaries. Related to M&A, he was the project lead for corporate transactions, including the acquisition of Orange and Rockland Utilities.

Mr. Frost joined Con Edison in 1996.

Prior to joining the company, Mr. Frost was an investment banker with Credit Suisse First Boston, calling on domestic and international utilities. He also spent seven years at Booz Allen & Hamilton as a management consultant in their strategy practice focused on energy, chemicals, computers, and pharmaceuticals industries.

Mr. Frost received his master’s degree in business administration from University of Chicago Graduate School of Business and a bachelor’s degree in economics from Macalester College.

Joseph McGrath

Director of Finance for Con Edison Transmission

Mr. McGrath is responsible for managing annual and five-year capital and O&M budgets for Con Edison Transmission, monitoring financial performance of the company and its partnerships, and providing accurate financial reporting. He leads risk management activities and works closely with the Consolidated Edison, Inc. corporate financial team, including treasury and corporate accounting. He is also involved in evaluating current and future project investment opportunities.

Mr. McGrath joined Con Edison in 1985 and was previously director of Treasury.

Mr. McGrath holds a master’s degree in business administration from New York University Stern School of Business and bachelor’s degree in electrical engineering from New York Institute of Technology.

Marie Berninger

Director of Business Development for Con Edison Transmission

Ms. Berninger leads market development, origination, and partnerships in electric transmission.

Ms. Berninger previously served as director, Utility of the Future, where she led various initiatives to drive the clean energy transition. She has extensive experience in wholesale markets, federal and state energy policy, clean energy technology, and transmission development. She was a core member of the team that established New York Transco and its original portfolio of projects. She also previously served as director, Business Development at the New York Power Authority where she was responsible for pursuing opportunities in large-scale renewables, transmission, and utility-scale storage. As an engineer early in her career, Ms. Berninger worked on developing innovative designs and demonstrating new technology on the electric system in New York City.

Ms. Berninger joined Con Edison in 2006.

Ms. Berninger holds a master’s degree in business administration from New York University Stern School of Business and bachelor’s degree in mechanical engineering from Lafayette College.