MUTUAL NOTICE OF EXTENSIONMutual Notice of Extension • April 30th, 2008 • Black Hills Corp /Sd/ • Electric services
Contract Type FiledApril 30th, 2008 Company IndustryThis Mutual Notice of Extension (the “Notice”) is provided as of April 29, 2008, by and among Black Hills Corporation, a South Dakota corporation (“Black Hills”), Aquila, Inc., a Delaware corporation (“Aquila”), and Great Plains Energy Incorporated, a Missouri corporation (“Great Plains”).