Tariffs Recent Filings PGA Summaries Iowa Electric Workshops Supplemental Information Electric Gas Btu Factors Cost of Gas Distribution Charges Energy Efficiency Exit Fees Firm Supply Standby Service Gas Retention Factors Imbalance Cashout Rates Imbalance Charges Interruptible Commodity Prices ISR Margin Manufactured Site Clean-Up RTP Illinois Rider 17 Customer Generation

Supplemental Information Nebraska Daily Commodity Prices December 2006 Date Gas Cost Component ($/Therm) 12/01/2006 $0.84461 12/02/2006 $0.84107 12/03/2006 $0.84107 12/04/2006 $0.84107 12/05/2006 $0.78756 12/06/2006 $0.75273 12/07/2006 $0.76282 12/08/2006 $0.76888 12/09/2006 $0.73405 12/10/2006 $0.73405 12/11/2006 $0.73405 12/12/2006 $0.67397 12/13/2006 $0.70477 12/14/2006 $0.73001 12/15/2006 $0.72698 12/16/2006 $0.69972 12/17/2006 $0.69972 12/18/2006 $0.69972 12/19/2006 $0.67750 12/20/2006 $0.64671 12/21/2006 $0.66589 12/22/2006 $0.63055 12/23/2006 $0.61894 12/24/2006 $0.61894 12/25/2006 $0.61894 12/26/2006 $0.61894 12/27/2006 $0.59572 12/28/2006 $0.57149 12/29/2006 $0.58108 12/30/2006 $0.58108 12/31/2006 $0.58108 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 | ©2009 MidAmerican Energy Holdings Company. All rights reserved.