Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

Effective Date: 01/19/2005, Docket: RP05-129-000, Status: Effective

Sixth Revised Sheet No. 226 Sixth Revised Sheet No. 226 : Effective

Superseding: Fifth Revised Sheet No. 226

GENERAL TERMS AND CONDITIONS

(Continued)

18. NO OBLIGATION TO OFFER SERVICE AT LESS THAN MAXIMUM RATE

18.1 Unless otherwise agreed by MRT and a Customer, MRT shall have no

obligation to offer its services at rates less than the maximum rates

specified in Sheet Nos. 5 through 9 of this tariff. MRT may from time

to time and at any time, upon twenty-four hours (24) verbal, electronic

or written notice, at its sole discretion or as provided in the

applicable Service Agreement, charge any individual Customer a rate

which is lower than the maximum rate for the applicable service as

specified in this tariff. Such lower rate shall not be less than MRT's

applicable minimum rate for the service provided. Any such verbal

notice shall be confirmed to Customer in writing or electronically via

the Internet and shall state the effective date of such rate change and

the quantity of gas affected. MRT may increase or decrease such rate

upon twenty-four (24) hours verbal or electronic notice to Customer and

shall confirm such notice in writing or electronically via the Internet.

Pursuant to Section 284 of the Commission's regulations, MRT shall file

with the Commission any and all required reports.

18.2 If MRT agrees to a discounted rate under MRT's rate schedules, the

following terms may be agreed to without constituting a material

deviation from MRT's applicable pro forma Service Agreement; provided,

however, any such rate or component thereof, as set forth in items (a)

through (g), shall not be less than MRT's applicable minimum rate, nor

greater than MRT's applicable maximum rate. Additionally, MRT and

Customer may agree that rate components may be adjusted upward or

downward to achieve an agreed upon overall rate so long as none of the

resulting rate components exceed the maximum rate applicable to that

rate component. Such rate may apply:

(a) to specified quantities under Customer's Service

Agreement(s);

(b) to quantities above or below a certain level or all

quantities if quantities exceed a certain level;

transported (i.e., that the rates shall be adjusted in a specified

relationship to the quantities actually transported);

(d) during specified periods of the year or over specifically

defined periods of time;