Electric utilities
10 Constellation Energy operations leaders
These ten Constellation Energy operations leaders hold chief operating officer, senior vice president, regional vice president and director of operations roles at Constellation. A reader can learn how operations leaders build and run their teams at Constellation Energy.
Professionals to explore
01—10Brian Onesti
LinkedInExperience: Executive Director Operations · Constellation
Executive Director Operations at Constellation since May 2018, a director-level Operations role according to the profile. Former Director - Mass Market Operations (2015–2018) and Operations Manager (2014–2015) at Constellation, and Operations Manager (2010–2014) at Integrys Energy Services, which the profile says is now part of Constellation.
Chris German
LinkedInExperience: Regional Vice President of Operations · Constellation
Regional Vice President of Operations at Constellation since January 2026, a vice president-level Operations role according to the profile. Former Regional Vice President Of Operations (2022–2026), Vice President, Outage Services (2017–2022), Director of Plant Operations (2013–2017) and General Plant Manager (2009–2013) at Calpine.
David Ellsworth
LinkedInExperience: Chief Operating Officer and Senior Vice President · Constellation
Chief Operating Officer and Senior Vice President at Constellation since 2012, with no end date shown on the profile. Former Vice President, Fuels at Exelon Generation (2004–2012) and Vice President at Pacific Gas and Electric Company (1999–2004), where the profile also lists Power Plant Construction (1993–1999).
Erik Durkish
LinkedInExperience: Director of Operations · Constellation
Director of Operations at Constellation since March 2024; the profile headline gives the role as Operations Director, R.E. Ginna Nuclear Power Plant. The profile also lists Shift Operations Superintendent at Constellation since 2021, and former Shift Manager (2019–2021) and Senior Reactor Operator (2015–2019) roles at Constellation.
Gururaj Desai
LinkedInExperience: Executive Director, Operations · Constellation
Executive Director, Operations at Constellation since March 2024, and former Director, Operations at Constellation (2008–2024). The profile also lists Manager (2006–2008) and Business Analyst (2004–2006) roles at Constellation, and its summary describes a leader in operations, management, finance and accounting, and information technology.
John Keenan
LinkedInExperience: Senior Vice President Operations · Constellation
Senior Vice President Operations at Constellation since 2023, a vice president-level Operations role according to the profile. Other Constellation roles on the profile are Senior Vice President of Strategy and Growth (2022–2023), Site Vice President (2020–2022), Plant Manager (2018–2020) and Engineering Director (2017–2018).
Lauren Coffey
LinkedInExperience: Director of Operations · Constellation
Director of Operations at Constellation since October 2025, a role the profile places in Morris, Illinois. Former Director of Engineering (2023–2025) and Senior Operations Manager (2022–2023) at Constellation, and Sr. Manager, Outage (2020–2022) and Executive Assistant to Chief Operations Officer (2019–2020) at Exelon Generation.
Michael Gillin
LinkedInExperience: Senior Vice President, Mid-Atlantic Operations · Constellation
Senior Vice President, Mid-Atlantic Operations at Constellation since February 2026. Former Site Vice President at Constellation (2022–2026), a role the profile places at Limerick Generating Station, and former Plant Manager (2021–2022) and Vice President, Corporate Engineering (2020–2021) at Exelon Generation.
Robert Graham III
LinkedInExperience: Corporate - Director Operations · Constellation
Corporate - Director Operations at Constellation since February 2024. Former Director Site Operations (2023–2024) and Director Organizational Performance and Regulatory (2022–2023) at Constellation, and Senior Manager Operations Support and Services (2021–2022) and Operations Shift Manager (2018–2021) at Exelon Generation.
Timothy Moore
LinkedInExperience: COO Constellation Power · Constellation
COO Constellation Power at Constellation since December 2022, a C-level role the profile describes as leading operation of Constellation renewable and traditional generation stations. Former VP Fleet Support at Constellation (2021–2022), and VP Organizational Performance (2018–2021) and Site Vice President, Oyster Creek Nuclear Generating Station (2017–2018) at Exelon Generation.
Choose the right perspective
Match the person's scope to your question, since a fleet-wide operations executive, a regional operations head and a plant-level director of operations see different parts of the business. Check when each person started the relevant role, so you know how long they have held that view.
Questions to take into the conversation
- 01How are operating standards set at the fleet level and then carried out at individual power plants?
- 02What does a plant-level director of operations own day to day, and what gets escalated to regional or fleet leaders?
- 03What does an outside supplier or service provider need to show before its work is used across several Constellation sites?
Reaching Constellation Energy operations leaders
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About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot and may describe past or present roles. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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