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Upcoming Events:

May 17 through May 19, 2010 – AGA Financial Forum Palm Beach, Florida

May 25, 2010, 9:30 a.m. MT – Black Hills Corp Annual Shareholder Meeting Rapid City, SD

July 9, 2010 – BKH 30th Anniversary New York Stock Exchange Listing

Oct 31 through Nov. 3, 2010 – EEI Financial Conference Palm Desert, CA

January 29, 2010 – Investor Conference Call / Webcast 9:00 AM MT / 11:00 AM ET Topic: Fourth Quarter and Full Year 2009 Investor Update

Webcast details:
* Click here to listen to a replay of the webcast.
* Click here to view the webcast presentation.

Conference call details:
* To listen to the live broadcast, call 800-230-1092.
* A replay of the conference call will be available through 2/05/2010 by dialing 800-475-6701 (USA) or 320-365-3844 (international). The access code is 139497#.

Click Here to view the 2008 10-K
Click Here to view the 2007 10-K
Click Here to view the 2006 10-K

Jason Ketchum, Director of Investor Relations
Phone: (605) 721-2765
jason.ketchum@blackhillscorp.com