Introduction to Operational Flow Orders (OFO)

Under the new market structure, PG&E implemented a process to encourage shippers to balance their supplies with their loads during times when the integrity of the pipeline is threatened. The following terms and concepts are explained to help you understand the process. Your CGT Account Services Managers are also available to answer questions. If you would like additional information about OFOs, please refer to the OFO Settlement and gas Rule 14 (pdf).

1. OFO Overview

An Operational Flow Order is a mechanism to protect the operational integrity of the pipeline. Pacific Gas and Electric ...

2. Core Procurement's Involvement in the Balancing Process

Prior to the new market structure implemented in March 1998, Pacific Gas and Electric Company's ...

3. Impact of OFOs on Market Center Services

The Golden Gate Market Center services include storage, parking and lending ...

4. Impact of OFOs on PG&E Receipt Points

Receipt points are not constrained during OFOs unless all other measures fail to balance the system ...

5. Involuntary Diversion - Glossary Definition

Involuntary Diversions are called when there is a severe supply shortage and deliveries to core customers are threatened ...

6. OFO Defined

An Operational Flow Order is a mechanism to protect the operational integrity of the pipeline. Pacific Gas and Electric ...

7. OFO/EFO Compliance

Customer Actions for Compliance (Refer to Gas Rule 14) ...

8. OFO/EFO Noncompliance Charges

Your California Gas Transmission Detail of Bill includes a section that details any charges or credits incurred as a result of ...

9. OFO Noncompliance Charge Proceeds

All proceeds from OFO noncompliance charges go directly to the Balancing Charge Account, a balancing account ...

10. OFO Notices

Pacific Gas and Electric Company's California Gas Transmission will notify the market when an OFO is called ...

11. OFO Tolerance Bands and Associated Noncompliance Charges

When an OFO is required, the Pacific Gas and Electric Company's California Gas Transmission Operations Department ...

12. Pipeline Inventory

To maintain a safe and reliable pipeline system, Pacific Gas and Electric Company's pipeline inventory must operate within ...

13. Storage Assets Available for Balancing and Market Center

A portion of Pacific Gas and Electric Company's storage assets is set aside for use in balancing the pipeline system ...

14. Supply and Demand Forecast and OFO

The pipeline inventory forecast in Pipe Ranger sometimes changes quite abruptly. This can make ...

15. Supply Forecast

Pacific Gas and Electric Company forecasts supply based on scheduled volumes, interconnect capacity, outage schedules ...

16. Typical Inventory Trend

The following graph depicts the typical customer demand and supply behavior on a daily basis ...