Board of Directors
Stephen P. Adik
Chairman of the Board
Committees: None
Director since November 1, 2004
Mr. Adik is the retired Vice Chairman of NiSource, Inc., a Merrillville, Ind.-based electric and natural gas production, transmission and distribution company. He has held a number of executive positions including Chief Financial Officer with NiSource and its predecessor Northern Indiana Public Service Company. Prior to joining NIPSCO, Mr. Adik held financial executive positions for American Natural Resources Company and three railroad companies.
Mr. Adik also serves on the boards of directors of the Chicago SouthShore and South Bend Railroad, a regional rail carrier serving northwest Indiana. In addition, Mr. Adik has served on the boards of several nonprofit organizations.
Mr. Adik resides in Valparaiso, Ind. He holds a bachelor's degree in mechanical engineering from Steven Institute of Technology and an MBA from Northwestern University.
Anthony T. Clark
Committees: Nominating and Governance, Human Resources
Director since December 6, 2016
Mr. Clark is a Senior Advisor at Wilkinson Barker Knauer, LLP. With offices in Washington, DC and Denver, it is one of the largest law firms in the U.S. dedicated primarily to the practice of communications and energy law. He has extensive experience in energy and utility policy at the federal and state level. Having been appointed by President Obama, and unanimously confirmed by the U.S. Senate, Mr. Clark served from 2012 to 2016 as a Commissioner of the Federal Energy Regulatory Commission. From 2001 to 2012 he was a Commissioner of the North Dakota Public Service Commission, including over 5 years as its Chairman. During his tenure at the North Dakota Commission, Mr. Clark was selected by his regulatory peers across the nation to serve a term as President of the National Association of Regulatory Utility Commissioners.
From 1999 to 2000, Mr. Clark was Labor Commissioner of the State of North Dakota and a member of the Cabinet of then Gov. Ed Schafer. In 1994 he was one of the youngest people ever elected to the North Dakota legislature, representing a portion of the City of Fargo for two terms in the State House of Representatives.
He is a graduate, with honor, from North Dakota State University and holds a master’s degree from the University of North Dakota. Having attained the rank of Eagle Scout in his youth, Mr. Clark has been a long-time volunteer with and supporter of the Boy Scouts of America. He and his wife have 3 children and reside in Ashburn, VA.
Dana J. Dykhouse
Committees: Human Resources (Chair), Audit
Director since January 30, 2009
Mr. Dykhouse is the Chief Executive Officer of First PREMIER Bank and also serves on the boards of Junior Achievement of South Dakota, the South Dakota State University Athletic Champions Council, Sioux Falls Development Foundation, Children's Care Hospital Foundation and Sioux Falls Sports Authority.
Mr. Dykhouse resides in Sioux Falls, S.D. and is a graduate of South Dakota State University.
Jan R. Horsfall
Committees: Safety, Environmental, Technology and Operations (Chair), Audit
Director since April 23, 2015
Mr. Horsfall is President and CEO of Maxletics Corporation, a sports technology company that connects influential elite athletes to brands. From 2012 to 2014, he was CEO of Universal Lubricants, a privately held environmental energy company, where he led a company-wide turnaround. Mr. Horsfall’s prior experience also includes a senior executive role at online gaming company Turbine Inc., and senior marketing roles at Lycos, the search engine/portal, and The Valvoline Company, one of the top automotive supply companies in the U.S.
Mr. Horsfall was the founder and co-chairman of Startup Colorado, where he worked with early-stage technology companies to boost the depth and breadth of entrepreneurial activity in the state. He also served as Entrepreneur-in-Residence at Colorado State University’s College of Business, where he also sat on the Global Leadership Council board.
Mr. Horsfall resides in Colorado Springs, Colo. and holds a bachelor’s degree in Business Administration from Colorado State University. He also earned an Executive Certificate from Indiana University.
Britt E. Ide
Committees: Safety, Environmental, Technology and Operations,
Nominating and Governance
Director since April 27, 2017
Ms. Ide is president of Ide Energy & Strategy. She previously served as senior counsel of Idaho Power Company and filled legal leadership roles at Healthwise Inc., Albertson’s Inc. and Boise Cascade Corp. She is a director on the Big Sky (MT) Chamber of Commerce and serves on the board of Hotrock Energy Research Organization and was appointed to Montana’s Clean Power Plan advisory council and as an ambassador for the Clean Energy Education & Empowerment Initiative, a U.S. Dept. of Energy, Massachusetts Institute of Technology and Stanford University collaboration.
Ms. Ide resides in Big Sky, Mont. She holds a bachelor’s degree in mechanical engineering from The Ohio State University, a master’s in environmental engineering from Montana State University, and a juris doctor from the University of Utah College of Law.
Julia L. Johnson
Committees: Nominating and Governance (Chair), Human Resources
Director since November 1, 2004
Ms. Johnson is President of NetCommunications, LLC, a strategy consulting firm specializing in the energy, telecommunications and information technology public policy arenas. Ms. Johnson was previously Chairperson of the Florida Public Service Commission which is responsible for the economic regulation of Florida's $16.8 billion investor-owned utility companies including intrastate operation of telecommunications, electric, gas, water and wastewater. She served on the Florida PSC from January 1993 through January 1999 before returning to the private sector.
Ms. Johnson also serves on the boards of directors of American Water, the largest publicly traded U.S. water and wastewater utility company; FirstEnergy, an investor-owned utility holding company; and Mastec, Inc., a leading end-to-end voice, video, data and energy infrastructure solution provider.
Ms. Johnson resides in Windermere, Fla. She holds a bachelor's degree in business administration and a law degree from the University of Florida and is a member of the National Bar Association and the Florida Bar Association.
Robert C. Rowe
Committees: None
Director since August 13, 2008
Mr. Rowe is President and Chief Executive Officer of NorthWestern Corporation since 2008, Co-Chair of the Institute for Electric Innovation, a member of the EEI Board of Directors Executive Committee, a member of the American Gas Association Board of Directors and Western Energy Institute past chair and current executive committee member.
Mr. Rowe resides in Helena, Mont. He holds a BA from Lewis and Clark College in Portland, Oregon, a JD from the University of Oregon, completed the Kennedy School Senior Executives' Program, and is active in various legal and professional organizations.
Linda G. Sullivan
Committees: Audit (Chair), Human Resources
Director since April 27, 2017
Ms. Sullivan is the retired executive vice president and the chief financial officer of American Water, the largest publicly traded U.S. water and wastewater utility. She has 22 years of experience with the Edison International companies, last serving as senior vice president and CFO at Southern California Edison from 2009 to 2014. She has 25-plus years of utility finance and regulatory experience and is a Certified Public Accountant and Certified Management Accountant.
Ms. Sullivan resides in Mullica Hill, New Jersey. She holds a bachelor’s degree in business administration and accounting from Portland State University and is a certified public accountant and certified management accountant.
Mahvash Yazdi
Committees: Human Resources,
Safety, Environmental, Technology and Operations,
Director since Dec. 1, 2019
Ms. Yazdi is president of Feasible Management Consulting, providing strategic consulting in energy and technology. She is also the former senior vice president and chief information officer of Edison International and former vice president and chief information officer for Hughes Electronics in the aerospace and defense sector. Ms. Yazdi holds a Masters in Business Administration degree from the University of Southern California.
She is nationally recognized as an expert in corporate information technology, drawing from more than 38 years of experience across three industries and continents. She has dedicated her life to serving others, exemplified by receiving the prestigious Ellis Island Medal of Honor and publishing her charitable memoir, 60:60 Celebrating Sixty Years With Sixty Acts Of Kindness.
Jeffrey W. Yingling
Committees: Nominating and Governance, Audit
Director since Oct. 29, 2019
Mr. Yingling is a Partner of Energy Capital Ventures, a strategic venture fund formed to invest in early stage energy companies. Immediately prior to forming this fund, Mr. Yingling was a senior advisor of investment banking at Guggenheim Securities, LLC, specializing in power, energy and renewables. He has more than 35 years of investment banking experience, serving as an advisor to companies in the power and utilities sector.
His career has included senior investment banking positions in the power and utilities sector with J.P. Morgan, Morgan Stanley, Dean Witter Reynolds and The First Boston Corporation. He also currently serves on the board of directors of LendingPoint Consolidated, Inc., and the board of trustees of the Chicago Historical Society. He previously served on the board of directors of Navigant Consulting, Inc., until that company’s sale to Guidehouse.