About Us

Mission / Vision

Through focused research and development and world-class execution, our mission is to provide solutions for the everyday electrical and production inefficiencies experienced by our clients. These improvements include electrical savings through VSD management as well as production savings through ESP management.

Our vision is to inspire technological innovation for environmentally-friendly solutions to reduce and supplement power generation requirements.

Leadership Team

Contributors Report 2015 portrait

Eric Calderon
Chief Executive Officer

Born in Houston, Texas, Eric R. Calderon serves as the Interim Chief Executive Officer of Power Sentry. Previously, Mr. Calderon worked as the Vice President of Western Energy and Support Technology (WEST) which acquired his company, LK Industries, in 2019. Prior to WEST Eric served as the President and Chief Executive Officer of LK Industries which was purchased in 2015 through Mr. Calderon’s search fund, TXE Capital.

Mr. Calderon previously worked as an engineer for Concho Resources in the Permian Basin where he gained valuable field experience in drilling and operations. Mr. Calderon earned his Bachelor of Science in Petroleum Engineering from Texas A&M University and a Master of Business Administration from Harvard University.

Arefeen Mohammed, Vice President of Engineering

Arefeen Mohammed
Vice President of Engineering

Dr. Mohammed Arefeen has over two decades of experience in power electronics, variable speed drives, power conversion and digital control. In his current role responsible for R&D and commercialization of energy storage equipment for rod lift and ESP applications.  Dr. Arefeen gained experience in product development, total product life cycle management, and sustaining operation by serving in various technical and management positions. Dr. Arefeen has over 70 technical publications, five issued patents. Dr. Arefeen is an IEEE senior member and earned Ph.D. in EE from Texas A&M University, College Station, Texas, USA 1994.


Michael Hartsell
Chief Financial Officer

Born in New Orleans, Louisiana, Michael Hartsell serves as the Chief Financial Officer of Power Sentry and is responsible for the overall financial strategy and direction, as well as information technology and human resources. Mr. Hartsell has served in numerous financial leadership roles for public and private entities, located in New Orleans and Houston.

Mr. Hartsell earned his Bachelor of Accounting from the University of New Orleans in December of 1992. Mr. Hartsell is a licensed Certified Public Accountant, Certified Information Technology Professional and Chartered Global Management Accountant.

Board Members

Charlie Leykum
Founding Partner, CSL Capital Management, L.P.

Gerald Cimador
Chief Financial Officer, CSL Capital Management, L.P.

Kent Jamison
General Counsel and Chief Compliance Officer, CSL Capital Management, L.P.

Paul Shiverick
Co-founder, Seminole Management Company

Sam Shiverick
Exploration Manager, Marathon Oil

Brent Barbour
Managing Partner, O TX Pumping LLC

Jeff Spath
Head, Harold Vance Department of Petroleum Engineering, Texas A&M University

CSL Capital Management Logo

Power Sentry is in proud partnership with CSL Capital Management, LLC, a Houston-based private equity firm specializing in energy services, equipment, and technology.

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