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Supplemental Information Gas: Imbalance Cashout Rates Navigator Imbalance Cashout Rates: 2008 - Monthly and Daily | 2007 - Monthly and Daily | 2006 - Monthly and Daily Select month and year below to view Daily Imbalance Cashout Rates. Iowa, Nebraska and South Dakota - Rate Summary: 2008 Monthly and Daily Imbalance Cashout Rates Transportation Charges Effective Date (Mo/Yr) Pipeline Supply Commodity Index Fuel (%) Commodity ($/Therm) Demand ($/Therm) ACA ($/Therm) Jan 2008 ANR ANR, ML 7         ANR ANR, Okla. 3.03% $0.00145 $0.01303 $0.00019 NGPL NGPL, Midcontinent 4.52% $0.00146 $0.02781 $0.00019 NNG Northern, demarc 1.81% $0.00379 $0.01598 * Feb 2008 ANR ANR, ML 7         ANR ANR, Okla. 3.03% $0.00145 $0.01441 $0.00019 NGPL NGPL, Midcontinent 4.52% $0.00146 $0.02176 $0.00019 NNG Northern, demarc 1.81% $0.00379 $0.01777 * Mar 2008 ANR ANR, ML 7         ANR ANR, Okla. 3.03% $0.00145 $0.01564 $0.00019 NGPL NGPL, Midcontinent 4.52% $0.00146 $0.02906 $0.00019 NNG Northern, demarc 1.81% $0.00379 $0.00879 * Apr 2008 ANR ANR, ML 7         ANR ANR, Okla. 2.78% $0.00145 $0.01406 $0.00019 NGPL Chicago city-gates         NGPL NGPL, Midcontinent 4.52% $0.00034 $0.01197 $0.00019 NNG Northern, Ventura 1.54% $0.00381 $0.00765 * NNG Northern, demarc 1.54% $0.00381 $0.00765 * May 2008 ANR ANR, ML 7         ANR ANR, Okla. 2.78% $0.00145 $0.01788 $0.00019 NGPL Chicago city-gates         NGPL NGPL, Midcontinent 4.52% $0.00034 $0.00352 $0.00019 NNG Northern, Ventura 1.54% $0.00381 $0.01017 * NNG Northern, demarc 1.54% $0.00381 $0.01017 * June 2008 ANR ANR, ML 7         ANR ANR, Okla. 2.78% $0.00145 $0.00996 $0.00019 NGPL Chicago city-gates         NGPL NGPL, Midcontinent 4.52% $0.00034 $0.01134 $0.00019 NNG Northern, Ventura 1.54% $0.00381 $0.01014 * NNG Northern, demarc 1.54% $0.00381 $0.01014 * July 2008 ANR ANR, ML 7         ANR ANR, Okla. 2.78% $0.00145 $0.01205 $0.00019 NGPL Chicago city-gates         NGPL NGPL, Midcontinent 4.52% $0.00034 $0.00691 $0.00019 NNG Northern, Ventura 1.54% $0.00381 $0.01324 * NNG Northern, demarc 1.54% $0.00381 $0.01324 * Aug 2008 ANR ANR, ML 7         ANR ANR, Okla. 2.78% $0.00145 $0.01192 $0.00019 NGPL Chicago city-gates         NGPL NGPL, Midcontinent 4.52% $0.00034 $0.01584 $0.00019 NNG Northern, Ventura 1.54% $0.00381 $0.01411 * NNG Northern, demarc 1.54% $0.00381 $0.01411 * Sept 2008 ANR ANR, ML 7         ANR ANR, Okla. 2.78% $0.00145 $0.00901 $0.00019 NGPL Chicago city-gates         NGPL NGPL, Midcontinent 4.52% $0.00034 $0.01583 $0.00019 NNG Northern, Ventura 1.54% $0.00381 $0.01638 * NNG Northern, demarc 1.54% $0.00381 $0.01638 * Oct 2008 ANR ANR, ML 7         ANR ANR, Okla. 2.78% $0.00145 $0.05110 $0.00017 NGPL Chicago city-gates         NGPL NGPL, Midcontinent 4.52% $0.00034 $0.13463 $0.00017 NNG Northern, Ventura 1.54% $0.00379 $0.02531 * NNG Northern, demarc 1.54% $0.00379 $0.02531 * Nov 2008 ANR ANR, ML 7         ANR ANR, Okla.         NGPL Chicago city-gates         NGPL NGPL, Midcontinent         NNG Northern, Ventura         NNG Northern, demarc         Dec 2008 ANR ANR, ML 7         ANR ANR, Okla.         NGPL Chicago city-gates         NGPL NGPL, Midcontinent         NNG Northern, Ventura         NNG Northern, demarc         * Included in commodity. Select month and year below to view Daily Imbalance Cashout Rates. Illinois - Rate Summary: 2008 Monthly and Daily Imbalance Cashout Rates Transportation Charges Effective Date (Mo/Yr) Pipeline Supply Commodity Index Fuel (%) Commodity ($/Therm) Demand ($/Therm) ACA ($/Therm) Jan 2008 NGPL NGPL, Midcontinent 4.52% $0.00146 $0.02781 $0.00019 Feb 2008 NGPL NGPL, Midcontinent 4.52% $0.00146 $0.02176 $0.00019 Mar 2008 NGPL NGPL, Midcontinent 4.52% $0.00146 $0.02906 $0.00019 Apr 2008 NGPL NGPL, Midcontinent 4.52% $0.00034 $0.01197  $0.00019 May 2008 NGPL NGPL, Midcontinent 4.52% $0.00034 $0.00352 $0.00019 June 2008 NGPL NGPL, Midcontinent 4.52% $0.00034 $0.01134 $0.00019 July 2008 NGPL NGPL, Midcontinent 4.52% $0.00034 $0.00691 $0.00019 Aug 2008 NGPL NGPL, Midcontinent 4.52% $0.00034 $0.01584 $0.00019 Sept 2008 NGPL NGPL, Midcontinent 4.52% $0.00034 $0.01583 $0.00019 Oct 2008 NGPL NGPL, Midcontinent 4.52% $0.00034 $0.13463 $0.00017 Nov 2008 NGPL NGPL, Midcontinent         Dec 2008 NGPL NGPL, Midcontinent         Navigator Imbalance Cashout Rates: 2008 - Monthly and Daily | 2007 - Monthly and Daily | 2006 - Monthly and Daily 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.