James S. Diemer

Director of Commercial Analytics and Strategy
Sempra Infrastructure

Jim Diemer is Director of Commercial Analytics and Strategy for Sempra Infrastructure.  In this capacity Mr. Diemer’s team leads all the fundamentals market research and analytics used in Sempra Infrastructure’s project development, due diligence, marketing, and business strategy activities across its three business lines of LNG & Net-Zero Solutions, Networks and Clean Power. Sempra Infrastructure’s mission is to lead the energy transition by being North America’s premier provider of safe and reliably energy delivery infrastructure to promote a better world.   Prior to the October 2021 formation of Sempra Infrastructure, Mr. Diemer was Regional Vice President of Midstream Commercial Development for Sempra LNG.

Mr. Diemer joined Sempra LNG in 2015 bringing his broad energy infrastructure development and energy management background from his prior 30 years of experience largely with Siemens and Pace Global Energy Services, the U.S. Department of Energy and Science Applications International Corporation (now Leidos).  He has an M.S in Environmental Engineering in Civil Engineering from the University of Illinois at Urbana-Champaign,  a B.S in Civil Engineering from Worcester Polytechnic Institute and a Certificate from the University of Notre Dame Mendoza College of Business Integral Executive Leadership Program.  Mr. Diemer and his wife Maureen reside in Dallas, TX and have two adult children and one grandchild.