Pine Prairie Energy Center, LLC

Original Volume No. 1

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Effective Date: 09/01/2007, Docket: RP07-563-000, Status: Effective

Original Sheet No. 33 Original Sheet No. 33 : Effective

ISS RATE SCHEDULE

INTERRUPTIBLE STORAGE SERVICE

1. AVAILABILITY

This Rate Schedule is available to any Customer for the

purchase of Interruptible Gas storage service from PPEC, provided

that:

(a) PPEC has determined that it has sufficient

operationally available and uncommitted Interruptible storage

capacity and injection and withdrawal capacity to perform the

service Customer has requested;

(b) PPEC has determined that the Interruptible storage

service Customer has requested will not interfere with efficient

operation of its system or with Firm Storage Services;

(c) Customer and PPEC have executed an Interruptible

Storage Service Agreement under this Rate Schedule;

(d) Customer accepts responsibility for arranging any

transportation service required for utilization of the storage

service provided under this Rate Schedule; and

(e) Service under this Rate Schedule may not be

available to the extent that PPEC would be required to construct,

modify, expand or acquire any facilities to enable PPEC to perform

the requested services.

2. APPLICABILITY AND CHARACTER OF SERVICE

This Rate Schedule shall apply to all Interruptible storage

service rendered by PPEC to Customer through use of PPEC's storage

facility located in Louisiana pursuant to an executed

Interruptible Storage Service Agreement.

2.1 Interruptible storage service rendered to Customer under

this Rate Schedule shall consist of:

(a) The receipt on any Day of Customer's Gas per

Customer's nomination up to Customer's Maximum Daily Injection

Quantity ("MDIQ") as stated in the executed Interruptible Storage

Service Agreement, plus Fuel Reimbursement, at the Point(s) of

Receipt and the injection of Gas so received into storage,

provided that all Firm Storage Service nominations for injections

have been satisfied and Customer's Storage Inventory has not

exceeded Customer's Maximum Storage Quantity;

(b) The storage of Gas in amounts up to Customer's

Interruptible Maximum Storage Quantity, as stated in the executed

Interruptible Storage Service Agreement, provided that all Firm

Storage Service requests to utilize Storage Inventory have been

satisfied; and