Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, May 6, 2015 at 7:24 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
5/4/2015No OFO in Effect
5/5/2015No OFO in Effect
5/6/2015No OFO in Effect
5/7/2015No OFO in Effect

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 Helpline at (800) 343-4743.

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 1, posted 08:07 AM PT

Last updated for the Gas Day of 05/06/2015
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf5/3/20155/4/20155/5/20155/6/20155/7/20155/8/20155/9/2015
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150 4152
4100 4103
4050
40004045 4046
3950 3969 39753979
3900
3850
3800
3750
3700
3650
3600
Within Operating Limits
Outside Operating Limits

All numbers are expressed in MMcf/day. 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
5/6/2015
Forecast
for
5/7/2015
Forecast
for
5/8/2015
Forecast
for
5/9/2015
Beginning Inventory4103397539794046
Ending Inventory3975397940464152
Inventory Change-128467106
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
325321254148
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
7579146252

*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 1, posted 08:07 AM PT

Last updated for the Gas Day of 05/06/2015
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
5/6/2015
Forecast
for
5/7/2015
Forecast
for
5/8/2015
Forecast
for
5/9/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 61.4
60.660.561.662.5
Demand
On-System Demand2135213020751885
Off-System Deliveries
SoCal Gas (KRS)198198198198
Southwest Gas3333
Kern River GT - HDL0000
Transmission Shrinkage28293131
Injection
PG&E Storage Injection (420 Maximum)*
Core, Market Center, and Pipeline Balancing
337334302302
Wild Goose Storage002575
Central Valley Storage4444
Lodi Storage0050150
Gill Ranch Storage29732929
TOTAL SYSTEM DEMAND2734277027162676
Supply
Interconnect Supply
Gas Transmission Northwest1182120813121312
Ruby457557557557
California Production40404040
SoCal Gas (KRS)0000
Kern River GT - HDL11111111
Kern River GT - Daggett269269269269
Southern Trails11111111
El Paso Natural Gas346346346346
Transwestern237237237237
Withdrawal
PG&E Storage Withdrawal (1742 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage34800
Central Valley Storage0000
Lodi Storage504800
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2606277527822782
INVENTORY CHANGE
(Supply - Demand)
-128467106
TOTAL CUSTOMER IMBALANCE-5381142182

*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
5/6/2015
Forecast
for
5/7/2015
Forecast
for
5/8/2015
Forecast
for
5/9/2015
Injection
PG&E Storage
Core and Market Center
326432357357
Wild Goose Storage26102575
Central Valley Storage38383838
Lodi Storage29050150
Gill Ranch Storage33333333
Pipeline Balancing Injection75757575
Withdrawal
PG&E Storage
Core and Market Center
63129129129
Wild Goose Storage2644800
Central Valley Storage34343434
Lodi Storage804800
Gill Ranch Storage4444
Pipeline Balancing Withdrawal0000

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

Actual
for
5/3/2015
Actual
for
5/4/2015
Actual
for
5/5/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 61.4
60.658.860.1
Demand
On-System Demand192921912074
Off-System Deliveries
SoCal Gas (KRS)238239213
Southwest Gas333
Kern River GT - HDL000
Transmission Shrinkage303030
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
254150308
Wild Goose Storage1101000
Central Valley Storage96959
Lodi Storage6100
Gill Ranch Storage373712
TOTAL SYSTEM DEMAND275828462648
Supply
Interconnect Supply
Gas Transmission Northwest126612651297
Ruby587587497
California Production363838
SoCal Gas (KRS)000
Kern River GT - HDL1019613
Kern River GT - Daggett186178296
Southern Trails0011
El Paso Natural Gas433428404
Transwestern160159143
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage0035
Central Valley Storage000
Lodi Storage01948
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY276927702782
INVENTORY CHANGE
(Supply - Demand)
11-76134
TOTAL CUSTOMER IMBALANCE-64-195138

*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
5/3/2015
Actual
for
5/4/2015
Actual
for
5/5/2015
Injection
PG&E Storage
Core and Market Center
381343368
Wild Goose Storage318317218
Central Valley Storage12812643
Lodi Storage1535531
Gill Ranch Storage373729
Pipeline Balancing Injection003
Withdrawal
PG&E Storage
Core and Market Center
636363
Wild Goose Storage212211247
Central Valley Storage343434
Lodi Storage797979
Gill Ranch Storage0015
Pipeline Balancing Withdrawal641300
Balancing Gas
Imbalance Gas in Storage**181016271755
PG&E Total Gas in Storage758217607576207

*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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