Lonni L. Dieck

Senior Vice President and Treasurer, American Electric Power

Lonni L. Dieck

Lonni Dieck is senior vice president and treasurer for American Electric Power. In this position, she is responsible for AEP’s treasury, corporate strategy, trusts and investment activities.

Previously, Dieck was senior vice president, Corporate Planning and Budgeting, responsible for corporate strategy development; oversight of financial planning, budgeting and reporting; fundamental analysis; and integrated resource planning functions for the AEP System.

Prior to that, she was vice president - RTO and Public Policy, responsible for the development, and/or coordination of policies on RTO, regulatory and public policy related issues; the strategic coordination of state governmental affairs efforts; and the development and coordination of NERC reliability standards compliance program.

From 2005 to 2007, she was vice president - Regulatory Case Management, responsible for coordination with the operating companies and other functional areas in major rate activities and strategy. Prior to that, she was vice president - Commercial Business Services, responsible for generation pool settlements, business process improvement, forecast and budget development and analysis of actual results for Commercial Operations, in addition to oversight of Commercial Operations' accounting, tax, investor, regulatory and other issues, working closely with the CFO, Regulatory Services and other AEP organizations.

Prior to 2003, she was director - Strategic Analysis-Projects where she led the coordination of corporate and business unit-specific strategic initiatives and performed the role of project manager of several integration and divestiture activities, including playing a significant role in the transaction and transition efforts of the AEP-CSW merger.

Dieck joined AEP in 1991 as a senior treasury staff accountant. In 1995, she was named administrative assistant to the executive vice president - administration and chief accounting officer. Prior to joining the company, she was an audit manager for Arthur Andersen, LLP.

She earned a bachelor's degree in accounting from Bowling Green State University and lives with her husband and two daughters in Westerville.