Last Updated 6 15 2008 Black Hills Corporation

Last Updated 6 -15 -2008 Black Hills Corporation Electric Utilities Group Chairman, President & CEO Black Hills Corporation David Emery President & COO Utilities Group Linden Evans President & COO Non-Regulated Energy Tom Ohlmacher Vice President Electric Utilities Stuart Wevik Director, Transmission Services, BHP Vance Crocker VP, Operations Colorado Electric Gary Stone Director, Generation Dispatch & Power Mrktng. Jackie Sargent 1

Electric Utilities Group – Transmission Services Dept. - BHP Director, Transmission Services Vance Crocker Dept. Admin Assistant Pam Wiley Manager Transmission Planning Eric Egge Transmission Planner Wes Wingen Transmission Planner Dan Baye Transmission Planner Dan Alsup Manager, BHP/CLFP T&D Reliability Center Kelly Wolfe Manager, NERC Training & Technical Support Gary Svarstad System Operator Scott Perhus Lead, System Supervisor Michael Pahl System Operator Jeffrey Halgerson System Operator Kirk Kruske System Operator Gary Hanson System Operator Kent Stenson SCADA Technician Andy Anderson System Operator Christine Towns Lead SCADA Engineer TBD 2

Electric Utilities Group – Transmission Services Dept. - BHP Director, Transmission Services Vance Crocker Manager NERC Compliance Bob Case Manager, CO Electric Reliability Center Robert Guasta Manager FERC Tariff & Compliance Larry Williamson T&D Lead System Operator Patti Marty Lead SCADA Engineer Corey Walker System Operator Terri Clevenger SCADA Backup TBD System Operator Jim Dean System Operator Ben Glessner System Operator Tony Martinez System Operator Tim Mazel 3

Electric Utilities Group – Generation Dispatch & Power Marketing Director, Generation Dispatch & Power Mrktng. Jackie Sargent Forward Marketer Tyson Taylor Resource Planning Engineer Eric Scherr Manager, Generation Dispatch & Power Mrktng. David (Andy) Butcher Supervisor, Generation Dispatch & Power Mrktng. Doriene Batka Supervisor, Transmission Scheduling & Energy Spc. Pam Pahl Real-Time Marketer Andrew Heinle Real-Time Marketer Robin Frost Transmission Scheduler Andrew Currie Transmission Scheduler Christi Kitschwar Real-Time Marketer E, James Haefs Real-Time Marketer Shenandoa Manning Trasnsmission Scheduler Brandie Slovek Transmission Scheduler Sabrina Martz Transmission Scheduler Cady Mc. Donald Transmission Scheduler Tonya Taecker Real-Time Marketer Joseph Janke 4