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Supplemental Information Daily Commodity Prices Iowa - Nebraska - South Dakota October 2007 Date Gas Cost Component ($/Therm) 10/01/2007 $0.59589 10/02/2007 $0.61614 10/03/2007 $0.66778 10/04/2007 $0.70525 10/05/2007 $0.68348 10/06/2007 $0.66778 10/07/2007 $0.66778 10/08/2007 $0.66778 10/09/2007 $0.68753 10/10/2007 $0.69259 10/11/2007 $0.69664 10/12/2007 $0.69664 10/13/2007 $0.64804 10/14/2007 $0.64804 10/15/2007 $0.64804 10/16/2007 $0.71132 10/17/2007 $0.72296 10/18/2007 $0.70575 10/19/2007 $0.71841 10/20/2007 $0.68297 10/21/2007 $0.68297 10/22/2007 $0.68297 10/23/2007 $0.67689 10/24/2007 $0.63943 10/25/2007 $0.63285 10/26/2007 $0.67689 10/27/2007 $0.66677 10/28/2007 $0.66677 10/29/2007 $0.66677 10/30/2007 $0.68753 10/31/2007 $0.72600 For Your Home | For Your Business | Safety | Rates | Energy Efficiency | Economic Development | Environmental Efforts About Us | Careers | News Room | Storm Center | Wind Energy | Contact | Streetlight Repair Request | System Outage Watch | Energy Choice | For Contractors | For Landlords | ©2008 MidAmerican Energy Holdings Company. All rights reserved.