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Joseph   Nigro

Senior Advisor to the CEO, Exelon Corporation


Joseph Nigro Exelon Corp Sr EVP and CFO

A 33-year veteran of the energy industry, Nigro is Senior Advisor to the CEO. 


Professional History

Previously, Nigro served as Exelon's chief financial officer and was responsible for overseeing the execution of all financial activities including the capital investment process, financial reporting, planning, tax, insurance, credit management, investments and corporate mergers and acquisitions.

Nigro served as CEO of Constellation from 2013 to 2018. He was responsible for the marketing of electricity, natural gas and other energy-related products and services to Constellation customers, as well as ensuring the optimization of Exelon’s generation portfolio by obtaining maximum value for power produced, while managing risk for the company and its shareholders. Constellation has a business presence in 48 states, Washington, D.C., parts of Canada and the United Kingdom, and is the leading power marketer to commercial and industrial customers and a top 10 marketer of natural gas in the United States.

Prior to his CEO role, Nigro served as senior vice president, portfolio strategy for Constellation. In that role, he led the portfolio management, structuring, quantitative analysis, transmission analysis, fundamental forecasting, strategic business systems and commercial transactions functions. Additionally, Nigro was responsible for the development and implementation of portfolio strategy; pricing and commercial evaluation processes for structured transactions, large capital projects and acquisition opportunities; commodity price forecasting; financial transmission strategy and the business oversight of the commercial group technology budget. 

Nigro joined the PECO Power Team in 1996 and held roles of increasing responsibility for the trading and marketing organization throughout his tenure. Prior to joining Constellation, he was the senior vice president, portfolio management and strategy for the Exelon Power Team. In addition, he led the merger integration for the Exelon Power Team wholesale trading and marketing organization with Constellation Energy. Previous roles included: vice president, structuring and portfolio management; director, commercial transactions; manager, Northeast Region, responsible for the trading and marketing of Exelon’s assets in New England; integration lead - Power Team/Sithe New England Holdings; manager, financial trading - hedge book; and financial transactor. 

Prior to joining Exelon, Nigro spent seven years with Phibro Energy, Inc., an independent oil trading and refining company, in Greenwich, Conn., and Houston.

Civic & Board 


Nigro serves on the board of directors for the Chicago Public Library, a public library system that consists of 80 locations throughout the city of Chicago, in addition to serving on the Advisory Board for FM Global Washington/Philadelphia Mutual Insurance Company.



Nigro received his bachelor’s degree in economics from the University of Connecticut. He has also completed the Exelon Leadership Institute Program through the Northwestern University Kellogg School of Management, the University of Chicago Executive Development Program, and the MIT Reactor Technology Course for Utility Executives.



Nigro and his wife, Melissa, reside in Baltimore.