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Operating Data | California Gas Transmission Pipeline Status


OFO/EFO Outlook

Last Updated Saturday, November 7, 2009 at 5:18am
Gas Day Activity Tolerance Stage/Noncompliance Charge Reason
11/05/2009No OFO in Effect
11/06/2009No OFO in Effect
11/07/2009System Wide OFO in Effect13%Stage 2 at $1.00/DthHigh Inventory
11/08/2009System Wide OFO in Effect11%Stage 3 at $5.00/DthHigh Inventory

When an OFO or EFO has been called, customers' supplies are required to be within the tolerance requirement of daily usage to avoid noncompliance penalties. The criteria for complying with an OFO or EFO are described here.

For additional information, please contact the PG&E Scheduling Hotline at (415) 973-2424.

While updates to the OFO Outlook are posted here, customers should use INSIDEtracc as their primary source for OFO notification and updated information. For specific end-use customer information, please see INSIDEtracc.

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System Inventory Status

Plan 3, posted 02:37 PM PT

Last updated for the Gas Day of 11/07/2009
Next update expected by 11:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

  Ending Inventory History Ending Inventory Forecasts
MMcf 11/4/2009 11/5/2009 11/6/2009 11/7/2009 11/8/2009 11/9/2009 11/10/2009
4800             
4700             
4600            4679
4500          4506  
4400    4453 4419      
4300        4391    
4200             
4100  4128          
40004044            
3900             
3800             
3700             
3600             
    Within Operating Limits
   Outside Operating Limits

When the forecast pipeline ending inventory exceeds the upper pipeline inventory operating limit or falls below the lower pipeline inventory operating limit, an OFO may be called to maintain the integrity and reliability of the gas transportation system.

Note: Historical data for yesterday is not available until mid-morning today.

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System Inventory Summary

  Forecast
for
11/7/2009
Forecast
for
11/8/2009
Forecast
for
11/9/2009
Forecast
for
11/10/2009
Beginning Inventory 4450 4419 4391 4506
Ending Inventory 4419 4391 4506 4679
Inventory Change -31 -28 115 173
 
Upper Limit 4500 4500 4500 4500
Difference*
(Upper Limit - Ending Inventory)
81 109 -6 -179
 
Lower Limit 3900 3900 3900 3900
Difference*
(Ending Inventory - Lower Limit)
519 491 606 779

*Forecast differences of less than 0 for the day after the current gas day (day 1) indicate that that PG&E may call an OFO to maintain pipeline integrity. Caution: This is PG&E's forecast of system inventory. Because market behavior and forecast loads can vary widely, this forecast may change significantly within the gas day and should therefore be used with caution. Forecasts further into the future are more likely to change than days closer to the current gas day e.g., the forecast for gas day 3 is subject to more change than the forecast for day 1.
All numbers are expressed in MMcf.
When an OFO has been called for the day after the current gas day (day 1), plans after the first plan of the gas day (posted by 8:30 AM) will often reflect changed market behavior and will show inventory projections within the established limits.

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PG&E Supply and Demand Forecast
(Net Physical Flows)

Plan 3, posted 02:37 PM PT

Last updated for the Gas Day of 11/07/2009
Next update expected by 11:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

  Forecast
for
11/7/2009
Forecast
for
11/8/2009
Forecast
for
11/9/2009
Forecast
for
11/10/2009
COMPOSITE TEMPERATURE
Historical Average for current day: 56.1
54.4 53.5 54.1 54.9
Demand
On-System Demand 1840 1900 2165 2215
Off-System Deliveries  
SoCal Gas (KRS) 28 37 37 37
Southwest Gas 4 4 4 4
Kern River GT - HDL 0 0 0 0
Transmission Shrinkage 29 28 30 30
Injection  
PG&E Storage (160 Maximum)*
Core, Market Center, and Pipeline Balancing
147 63 62 4
Wild Goose Storage 144 139 50 0
Lodi Storage 242 229 75 75
TOTAL SYSTEM DEMAND 2434 2400 2423 2365
Supply
Interconnect Supply  
Gas Transmission Northwest 1338 1308 1474 1474
California Production 130 130 130 130
SoCal Gas (KRS) 0 0 0 0
Kern River GT - HDL 0 0 0 0
Kern River GT - Daggett 41 40 40 40
Southern Trails 53 57 57 57
El Paso Natural Gas 552 544 544 544
Transwestern 287 294 294 294
Withdrawal  
PG&E Storage (956 Maximum)*
Core, Market Center, and Pipeline Balancing
0 0 0 0
Wild Goose Storage 0 0 0 0
Lodi Storage 0 0 0 0
TOTAL SYSTEM SUPPLY 2400 2373 2538 2538
INVENTORY CHANGE
(Supply - Demand)
-31 -28 115 173
TOTAL CUSTOMER IMBALANCE 29 -39 105 164

*Maxima for injection and withdrawal apply to current day only.
Note: All numbers are expressed in MMcf/d. Differences may exist between these figures and those shown in PG&E's INSIDEtracc. This data is PG&E's best estimate using operational data.

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PG&E Storage Activity Forecast
(Scheduled Volumes)

  Forecast
for
11/7/2009
Forecast
for
11/8/2009
Forecast
for
11/9/2009
Forecast
for
11/10/2009
Injection  
PG&E Storage
Core and Market Center
72 63 62 4
Wild Goose Storage 224 218 50 0
Lodi Storage 361 349 75 75
Pipeline Balancing Injection 75 0 0 0
Withdrawal  
PG&E Storage
Core and Market Center
0 0 0 0
Wild Goose Storage 79 79 0 0
Lodi Storage 119 119 0 0
Pipeline Balancing Withdrawal 0 0 0 0

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PG&E Recent Supply and Demand Data
(Net Physical Flows)

  Actual
for
11/4/2009
Actual
for
11/5/2009
Actual
for
11/6/2009*
COMPOSITE TEMPERATURE
Historical Average for current day: 56.1
58.2 58.5 57.4
System Demand
On-System Demand 2127 2067 1976
Off-System Deliveries  
SoCal Gas (KRS) 124 172 38
Southwest Gas 4 4 4
Kern River GT - HDL 0 0 4
Transmission Shrinkage 28 28 28
Injection  
PG&E Storage
Core, Market Center, and Pipeline Balancing
70 76 75
Wild Goose Storage 90 0 0
Lodi Storage 0 0 0
TOTAL SYSTEM DEMAND 2444 2346 2124
Supply
Interconnect Supply  
Gas Transmission Northwest 1160 1137 1298
California Production 130 130 129
SoCal Gas 0 0 0
Kern River GT - HDL 0 0 0
Kern River GT - Daggett 6 5 19
Southern Trails 53 57 49
El Paso Natural Gas 603 579 580
Transwestern 373 389 284
Withdrawal  
PG&E Storage
Core, Market Center, and Pipeline Balancing
0 0 0
Wild Goose Storage 0 0 0
Lodi Storage 119 133 91
TOTAL SYSTEM SUPPLY 2443 2430 2449
INVENTORY CHANGE
(Supply - Demand)
-1 84 325
TOTAL CUSTOMER IMBALANCE 32 167 372

*Until yesterday's final figures are released, all numbers in this column will appear as 0.
Note: All numbers are expressed in MMcf/d. Differences may exist between these figures and those shown in PG&E's INSIDEtracc. This data is PG&E's best estimate using operational data.

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PG&E Recent Storage Activity
(Scheduled Volumes)

  Actual
for
11/4/2009
Actual
for
11/5/2009
Actual
for
11/6/2009*
Injection  
PG&E Storage
Core and Market Center
3 0 0
Wild Goose Storage 198 117 119
Lodi Storage 149 131 141
Pipeline Balancing Injection 68 76 75
Withdrawal  
PG&E Storage
Core and Market Center
0 0 0
Wild Goose Storage 108 122 110
Lodi Storage 268 267 232
Pipeline Balancing Withdrawal 0 0 0
Balancing Gas  
Imbalance Gas in Storage** 3623 3765 4110

*Until yesterday's final figures are released, all numbers in this column will appear as 0.
** Suspension of pipeline balancing injection or withdrawal may occur if Imbalance Gas in Storage exceeds balancing inventory limits. If Imbalance Gas in Storage is greater than 4.040 Bcf, pipeline balancing injection may not be available. If Imbalance Gas in Storage is at or below 0.0 Bcf, balancing withdrawal will not be available.
The daily change of Imbalance Gas in Storage may not equal the daily Pipeline Balancing. This is because Pipeline Balancing is the entire system balancing required for the day and Imbalance Gas in Storage is only the Cumulative Imbalance portion of the entire system imbalance gas in storage. PG&E may include the entire system imbalance gas as the Imbalance Gas in Storage sometime in the future.

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