Category Archives: Bio

Senior Vice President & Chief Information Officer As part of the ACES Senior Management team, Mr. Haas is responsible for leading the IT organization at ACES. Prior to becoming CIO, Mr. Haas held a variety of IT positions over his tenure at ACES. Prior to joining the ACES team, Mr. Haas held positions with International […]

President and Chief Risk Officer Mr. Walker leads the Middle Office function at ACES.  The Middle Office has a primary focus on tracking and mitigating risk, as well as risk reporting, and risk management training and consulting.  Mr. Walker’s responsibilities include oversight of all Trading Control, Credit Services, Contract Administration, Regulatory, and Corporate Development functions. Mr. […]

President & Chief Financial Officer Mr. Claspell leads the Back Office function at ACES.  His responsibilities include oversight of all energy market settlement activities for ACES’ Clients, as well as oversight of ACES’ internal accounting activities, legal support, human resources, and general administrative functions. Mr. Claspell has more than 30 years experience in finance, accounting, […]

President & Chief Executive Officer Mr. Steffes assumed his role as President & Chief Executive Officer of ACES in September of 2013. As Senior Vice President & Chief Operating Officer at ACES for the previous 14 years, Mr. Steffes has been responsible for all commercial activities of the company.  This encompasses managing the company’s areas of […]