Otter Tail Corporation - Board of Directors

John C. MacFarlane Chairman of the Board of Directors Executive Committee		Fergus Falls, Minnesota • Retired President and Chief Executive Officer, Otter Tail Corporation

Karen M. Bohn Audit, Corporate Governance and Executive Committees		Edina, Minnesota • President, Galeo Group, LLC (management consulting firm)

John D. Erickson		Fergus Falls, Minnesota • President and Chief Executive Officer, Otter Tail Corporation

Arvid R. Liebe Compensation, Corporate Governance and Executive Committees		Milbank, South Dakota •Retired President, Liebe Drug, Inc. (retail business) • Owner, Liebe Farms, Inc.

Edward J. McIntyre Audit and Compensation Committees		White Salmon, Washington • Retired Vice President and Chief Financial Officer, Xcel Energy (energy company)

Joyce Nelson Schuette Compensation and Corporate Governance Committees		Walker, Minnesota • Retired Managing Director and Investment Banker, Piper Jaffray & Co. (financial services)

Nathan I. Partain Audit, Compensation and Executive Committees		Chicago, Illinois • President and Chief Investment Officer, Duff & Phelps Investment Management Co. • President, Chief Executive Officer and Chief Investment Officer, DNP Select Income Fund, Inc. (closed-end utility fund)

Gary J. Spies Audit and Corporate Governance Committees		Fergus Falls, Minnesota • Chairman, Service Food, Inc. (retail business) • Vice President, Fergus Falls Development Company, Midwest Regional Development Company, LLC (land and housing development)

James B. Stake Audit and Compensation Committees		Edina, Minnesota • Retired Executive Vice President, Enterprise Services, 3M Company (diversified manufacturing)