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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. Rate Summary: 2007 Monthly and Daily Imbalance Cashout Rates Company Rates Supply Charges Transportation Charges (Mo/Yr) Pipeline Buy ($/Therm) Sell ($/Therm) Index Commodity ($/Therm) Commodity ($/Therm) Demand ($/Therm) Fuel (%) ACA ($/Therm) Surcharges ($/Therm) Jan 2007 ANR $0.64529 $0.66540 ANR-OK $0.61358 $0.00145 $0.01992 3.75% $0.00016 $0.00000 NGPL $0.64222 $0.65953 NGPL-MC $0.60573 $0.00146 $0.01714 4.52% $0.00016 $0.00000 NNG $0.66039 $0.69677 Demarcation $0.64027 $0.00376 $0.03603 1.54% $0.00000 $0.00000 Feb 2007 ANR $0.74530 $0.76290 ANR-OK $0.70891 $0.00145 $0.01743 3.75% $0.00016 $0.00000 NGPL $0.74495 $0.75644 NGPL-MC $0.70288 $0.00146 $0.01138 4.52% $0.00016 $0.00000 NNG $0.78877 $0.81745 Demarcation $0.76546 $0.00376 $0.02841 1.54% $0.00000 $0.00000 Mar 2007 ANR $0.63494 $0.64987 ANR-OK $0.60371 $0.00145 $0.01479 3.75% $0.00016 $0.00000 NGPL $0.64097 $0.66408 NGPL-MC $0.60455 $0.00146 $0.02288 4.52% $0.00016 $0.00000 NNG $0.67655 $0.69558 Demarcation $0.65603 $0.00376 $0.01885 1.54% $0.00000 $0.00000 Apr 2007 ANR $0.69301 $0.71485 ANR-OK $0.66400 $0.00145 $0.02163 3.03% $0.00016 $0.00000 NGPL $0.70553 $0.71507 NGPL-MC $0.66668 $0.00034 $0.00945 4.52% $0.00016 $0.00000 NNG $0.72270 $0.73964 Demarcation $0.70147 $0.00376 $0.01678 1.48% $0.00000 $0.00000 May 2007 ANR $0.70502    ANR-OK $0.67553 $0.00145 $0.01547 3.03% $0.00016 $0.00000 ANR   $0.80109  ANR-ML7  $0.79340           NGPL $0.71277  $0.72076  NGPL-MC  $0.67353 $0.00034 $0.00792 4.52% $0.00016 $0.00000 NNG $0.72422  $0.73626  Demarcation  $0.70295 $0.00376 $0.01192 1.48% $0.00000 $0.00000 June 2007 ANR $0.68624    ANR-OK $0.65750 $0.00145 $0.01163 3.03% $0.00016 $0.00000 ANR   $0.74332  ANR-ML7  $0.73618           NGPL $0.68839  $0.69621  NGPL-MC  $0.65048 $0.00034 $0.00774 4.52% $0.00016 $0.00000 NNG $0.68745  $0.69846  Demarcation  $0.66707 $0.00376 $0.01091 1.48% $0.00000 $0.00000 July 2007 ANR $0.59339    ANR-OK $0.56832 $0.00145 $0.01166 3.03% $0.00016 $0.00000 ANR   $0.64971  ANR-ML7  $0.64347           NGPL $0.59815  $0.60362  NGPL-MC  $0.56515 $0.00034 $0.00542 4.52% $0.00016 $0.00000 NNG $0.60496  $0.61432  Demarcation  $0.58658 $0.00376 $0.00927 1.48% $0.00000 $0.00000 Aug 2007 ANR $0.59950    ANR-OK $0.57419 $0.00145 $0.01670 3.03% $0.00016 $0.00000 ANR   $0.64402  ANR-ML7  $0.63784           NGPL $0.60395  $0.62235  NGPL-MC  $0.57063 $0.00034 $0.01823 4.52% $0.00016 $0.00000 NNG $0.60580  $0.61963  Demarcation  $0.58740 $0.00376 $0.01369 1.48% $0.00000 $0.00000 Sept 2007 ANR $0.55546    ANR-OK $0.53038 $0.00145 $0.02766 3.03% $0.00016 $0.00000 ANR   $0.59211  ANR-ML7  $0.58477           NGPL $0.55863  $0.58191  NGPL-MC  $0.52628 $0.00034 $0.02299 4.52% $0.00016 $0.00000 NNG $0.56675  $0.57392  Demarcation  $0.54773 $0.00376 $0.00708 1.48% $0.00000 $0.00000 Oct 2007 ANR $0.64115    ANR-OK $0.61242 $0.00145 $0.01618 3.03% $0.00019 $0.00000 ANR   $0.68826  ANR-ML7  $0.67973           NGPL $0.65041  $0.65823  NGPL-MC  $0.61282 $0.00034 $0.00773 4.52% $0.00016 $0.00000 NNG $0.67348  $0.68360  Demarcation  $0.65155 $0.00379 $0.01000 1.48% $0.00000 $0.00000 Nov 2007 ANR $0.57217    ANR-OK $0.54637 $0.00145 $0.01146 3.03% $0.00019 $0.00000 ANR   $0.73240  ANR-ML7  $0.72332           NGPL $0.57367  $0.59424  NGPL-MC  $0.53937 $0.00146 $0.02032 4.52% $0.00016 $0.00000 NNG $0.63587  $0.64855  Demarcation  $0.61290 $0.00379 $0.01252 1.81% $0.00000 $0.00000 Dec 2007 ANR $0.67156    ANR-OK  $0.64155  $0.00145  $0.01101  3.03%  $0.00019  $0.00000  ANR   $0.74489  ANR-ML7  $0.73565            NGPL $0.67712  $0.71217  NGPL-MC  $0.63689  $0.00146  $0.03462  4.52%  $0.00019  $0.00000  NNG $0.68957  $0.70392  Demarcation  $0.66497  $0.00379  $0.01418  1.81%  $0.00000  $0.00000  Note: Supply Commodity is the monthly average of the daily indices published in Gas Daily. Transportation Commodity is the weighted average demand of awarded capacity release postings. 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.