Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

Effective Date: 04/01/2003, Docket: RP00-410-003, Status: Effective

Fifth Revised Sheet No. 147 Fifth Revised Sheet No. 147 : Effective

Superseding: Fourth Revised Sheet No. 147

GENERAL TERMS AND CONDITIONS

(Continued)

10. TRANSPORTATION BALANCING (Continued)

its Internet web site. All editions of the industry

publication utilized which cover gas prices for the

applicable month will be used to calculate the Index Buy and

Index Sell Prices for that month, and if a weekly price

contains days for two months, that weekly price will be used

for the earlier month only.

For Customers which have aggregate monthly imbalances of

1,000 Dth or less, MRT will cash-out such imbalances at the

monthly average price, which shall be determined by taking

the simple arithmetic average of the average weekly prices

used to determine the Index Buy and Index Sell Prices. For

Customers with aggregate monthly imbalances in excess of

1,000 Dth, MRT will cash-out such imbalances based on the

applicable imbalance percentages and prices stated in the

chart below.

(ii) The dollar value of each Customer's imbalance

will be calculated by zone after netting and aggregating

same zone imbalances across multiple contracts, if

applicable, for a Customer by multiplying each incremental

current month Dth imbalance quantity by the applicable Index

Buy or Index Sell Price. For over-received quantities

(Customer imbalances consisting of an excess of receipts

over deliveries), an Index Buy Price will be used to

calculate the payment or invoice credit amount due Customer.

The Index Buy Price will be the lowest of the average weekly

prices for the month in which the imbalance was incurred.

For over-delivered quantities (Customer imbalances

consisting of an excess of deliveries over receipts), an

Index Sell Price will be used to calculate the amount

Customer will be invoiced for payment to MRT. The Index

Sell Price will be the highest of the average weekly prices

for the month in which the imbalance was incurred.