Centerpoint Energy Gas Transmission Company

Sixth Revised Volume No. 1

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Effective Date: 05/01/2010, Docket: RP10-567-000, Status: Effective

Third Revised Sheet No. 251 Third Revised Sheet No. 251

Superseding: Second Revised Sheet No. 251

RATE SCHEDULE SBS

SHORT-TERM BALANCING SERVICE

(Continued)

4. FLEXIBILITY OF RATES:

The applicable maximum (Base Rate plus other applicable charges) and

minimum rates and charges for service under this Rate Schedule are

specified in Transporter's Statement of Effective Rates and Charges for

Transportation of Gas contained in this Tariff. Any discount from the

maximum rate applicable to any service shall be in accordance with terms

and conditions agreed to and as specified by Transporter. Said rates

are subject to adjustment as provided in the General Terms and

Conditions.

5. MONTHLY BILL:

5.1 Calculation.

The bill for a Service Month shall be the sum of:

(a) for each Day during which Shipper has not reduced its

Advance Delivery or Advance Receipt account to zero, the

product of the applicable Daily Rate and the total Dth of

Advance Delivery and/or Advance Receipt Gas in Shipper's

account on that Day, and

(b) if Shipper did not reduce its Advance Delivery or Advance

Receipt account to zero by the end of a Month, the product

of the applicable Carryover Rate and the total Dth of Gas

remaining in the applicable account(s) on the first Day of

the subsequent Month.

5.2 Other Charges and Retentions.

(a) If Shipper fails to return Advance Delivery Gas when

required to do so under this Rate Schedule, unless

Transporter otherwise agrees, Shipper shall be obligated to

pay Transporter for the deficient quantities calculated on

the same basis as for Undersupplies using the higher of