UNS Energy’s Regulated Utilities

Susan Gray – President and Chief Executive Officer

After beginning her career as a student intern at TEP in 1994, Susan was hired as an Energy Management System Engineer in 1997 and advanced through several engineering roles. She was promoted to Director of Design & Construction Services in 2011, and rose to Vice President of Energy Delivery in 2015. She was promoted to Senior Vice President and Chief Operating Officer in 2019, and named President of UNS Energy in 2020.

Susan has a bachelor’s degree in electrical engineering and an MBA from the University of Arizona.

Erik Bakken – Vice President of System Operations and Energy Resources

Erik joined TEP as a Corporate Counsel in 2000 after earning a bachelor’s degree in political science from Arizona State University and a juris doctorate from the University of Arizona. He advanced through management positions in Land Resources and Environmental Services and was promoted to Senior Director of Transmission & Environmental Services in 2014. He was promoted to Vice President of Transmission & Distribution Planning and Environmental in 2018 before taking on expanded responsibilities in his current role.

Dallas Dukes – Vice President, Energy Programs and Pricing

Dallas joined TEP in 2004 as Director of Corporate Accounting after serving as Divisional Controller for Citizens Gas & Coke Utility (now Citizens Energy Group) in Indianapolis. He became Director of Rates and Revenue Requirements in 2005 and was later promoted to Senior Director in that role, eventually assuming oversight of areas including new programs and services, customer analytics, renewable energy and energy efficiency programs. He was promoted to Vice President in 2019. Dallas is a Certified Public Accountant and earned a bachelor’s degree in accounting from Indiana University and an MBA from Anderson University.

Cynthia Garcia – Vice President, Energy Delivery

Cynthia joined TEP in 2000 as a Lead Accountant. She transitioned to T&D in 2005, serving as a Supervisor and Project Manager before being promoted to Lead Superintendent in 2013. She rose to Director of Project Delivery in 2014 and was promoted to Senior Director of Operations in 2016. She was promoted to Vice President in January 2020. Cynthia holds a bachelor’s degree in business administration from the University of Arizona.

Todd C. Hixon – Senior Vice President and General Counsel

Todd joined TEP as a corporate counsel in 1998 after three years in private practice. He rose through leadership positions in the Legal Services Department and served as general counsel for Millennium Energy Holdings, a UNS Energy subsidiary that has overseen unregulated investments. Todd was named Associate General Counsel of UniSource Energy in 2010, and was promoted to Vice President and General Counsel the following year. He has a bachelor’s degree in architecture and earned a juris doctorate from the University of Arizona.

Mark Mansfield – Vice President, Special Projects

Mark joined the company in 2008, serving as Senior Director of Generation before being being named Vice President of Energy Resources. Prior to joining TEP, Mark held various leadership positions at PacifiCorp Energy. He has a bachelor’s degree in mechanical engineering from Brigham Young University and an MBA from the University of Utah. Mark assumed his current role in July 2020.

Frank P. Marino – Senior Vice President and Chief Financial Officer

Frank became Senior Vice President and Chief Financial Officer in 2019, having previously served as Vice President and CFO. Before joining TEP in 2013, Frank was a Vice President and Chief Financial Officer of the wind and solar businesses of the AES Corporation, a global power company. Frank is a Certified Public Accountant and has a bachelor’s degree in accounting from the State University of New York and master’s in business administration from Fairleigh Dickinson University.

Catherine E. Ries – Vice President, Customer and Human Resources

Before joining TEP in 2007, Catherine was Vice President of Human Resources for Clopay Building Products Company, a division of Griffon Corporation. Catherine also spent more than a dozen years in the airline industry, where she specialized in development and training.

She has a bachelor’s degree in fine arts and an MBA from Arizona State University.

Michael Sheehan – Vice President of Fuels, Resource Planning & Wholesale Marketing

Mike came to TEP in 1993 as an Information Services Specialist. He transitioned to Energy Settlements in 1998, where he worked as an analyst before being promoted to Manager of Resource Planning in 2001. Mike was promoted to Director of Resource Planning in 2010, and then to Senior Director of Fuels and Resource Planning in 2015. He holds a bachelor’s degree in Management Information Systems from the University of Arizona.

Jo Smith – Vice President, Policy Advisor

Jo joined TEP in 2003 as Director of Investor Relations after having previously served in that role at Portland General Electric. She advanced to Director of Regulatory Services in 2011 and was promoted to Senior Director of Regulatory Services and Corporate Communications in 2013.

Jo is a Certified Public Accountant and has a bachelor’s degree in accounting from Michigan State University.

Morgan Stoll – Vice President and Chief Information Officer

Since joining the company in 2008, Morgan has held various leadership roles within Information Services. Prior to joining TEP, he led IT departments at two global dot-coms and a regional healthcare provider. Morgan has a bachelor’s degree in information technology from Barry University and a master’s in information technology from Capella University.

Martha B. Pritz - Treasurer

Since joining TEP in 1999, Martha has held various leadership roles in financial planning, treasury services and capital resources before assuming her current role as Senior Director of Financial Planning and Analysis. She previously held positions with Huck International, Inc. and Total Petroleum, Inc. Martha is a CFA charterholder with a bachelor’s degree in communications from the University of Colorado-Boulder and a master’s in finance from the University of Colorado-Denver.