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. 9 Original Sheet No. 9 : Effective

ISS RATE STATEMENT - INTERRUPTIBLE STORAGE SERVICE*

RATE UNITS

Storage Inventory Market Based/ $/Dth

Charge Negotiable

Payment shall be equal to the Storage Inventory Charge specified

in Customer's executed Interruptible Storage Service Agreement

multiplied by the Dth quantity of Customer's Storage Inventory at

the end of each Day, such amounts summed for all Days in a given

Month.

Storage Injection Market Based/ $/Dth

Charge Negotiable

Payment shall be equal to the Storage Injection Charge specified

in Customer's executed Interruptible Storage Service Agreement

multiplied by the Dth quantity Customer shall have delivered to

PPEC for injection into storage for each Day during a given Month.

Storage Withdrawal Market Based/ $/Dth

Charge Negotiable

Payment shall be equal to the Storage Withdrawal Charge specified

in Customer's executed Interruptible Storage Service Agreement

multiplied by the Dth quantity PPEC shall have withdrawn from

storage for Customer's account for each Day during a given Month.

Fuel Market Based/ In Kind %

Reimbursement Negotiable

This amount of Gas shall be reimbursed by Customer in kind, as

determined pursuant to the General Terms and Conditions of this

FERC Gas Tariff and the Customer's executed Interruptible Service

Agreement.

In addition to the charges specified above, Customer shall pay all

applicable taxes set forth in either the General Terms and

Conditions of this FERC Gas Tariff or the Interruptible Storage

Service Agreement and all other applicable surcharges, including,

but not limited to, ACA charges.

* All quantities of Gas are measured in Dekatherms (Dth).