Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Sunday, August 18, 2019 at 8:05 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
8/16/2019No OFO in Effect
8/17/2019No OFO in Effect
8/18/2019No OFO in Effect
8/19/2019No 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 4, posted 09:56 PM PT

Last updated for the Gas Day of 08/18/2019
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf8/15/20198/16/20198/17/20198/18/20198/19/20198/20/20198/21/2019
4750
4700
4650
4600
4550
4500
4450
4400
4350 436943834385
4300
42504299 4279
4200 4243
4150
4100 4122
4050
4000
3950
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
8/18/2019
Forecast
for
8/19/2019
Forecast
for
8/20/2019
Forecast
for
8/21/2019
Beginning Inventory4383438542794243
Ending Inventory4385427942434122
Inventory Change2-106-36-121
 
Upper Limit4400450045004400
Difference*
(Upper Limit - Ending Inventory)
15221257278
 
Lower Limit4000410041004000
Difference*
(Ending Inventory - Lower Limit)
385179143122

*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 8:00 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 4, posted 09:56 PM PT

Last updated for the Gas Day of 08/18/2019
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
8/18/2019
Forecast
for
8/19/2019
Forecast
for
8/20/2019
Forecast
for
8/21/2019
COMPOSITE TEMPERATURE
Historical Average for current day: 70.4
69.569.970.676.2
Demand
On-System Demand1,6651,9902,0002,085
Off-System Deliveries
SoCal Gas (KRS)319331331331
Southwest Gas5555
Kern River GT - HDL0000
Transmission Shrinkage31303027
Injection
PG&E Storage Injection (315 Maximum)*
Core, Market Center, and Pipeline Balancing
265175154104
Wild Goose Storage3542582000
Central Valley Storage6000
Lodi Storage7060600
Gill Ranch Storage78595959
TOTAL SYSTEM DEMAND2,7932,9092,8402,611
Supply
Interconnect Supply
Gas Transmission Northwest1,3211,3211,3211,321
Ruby728728728414
California Production26262626
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL-0-0-0-0
Kern River GT - Daggett19333
Southern Trails0000
El Paso Natural Gas477452452452
Transwestern224230230230
Withdrawal
PG&E Storage Withdrawal (805 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage-0-0-0-0
Central Valley Storage-0434343
Lodi Storage-0-0-0-0
Gill Ranch Storage-0-0-0-0
TOTAL SYSTEM SUPPLY2,7952,8032,8032,489
INVENTORY CHANGE
(Supply - Demand)
2-106-36-121
TOTAL CUSTOMER IMBALANCE57-127-6-146

*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
8/18/2019
Forecast
for
8/19/2019
Forecast
for
8/20/2019
Forecast
for
8/21/2019
Injection
PG&E Storage
Core and Market Center
371336266266
Wild Goose Storage4694552000
Central Valley Storage53566
Lodi Storage1281191190
Gill Ranch Storage62626262
Pipeline Balancing Injection750500
Withdrawal
PG&E Storage
Core and Market Center
161161162162
Wild Goose Storage11619700
Central Valley Storage48484949
Lodi Storage5858580
Gill Ranch Storage3333
Pipeline Balancing Withdrawal0000

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

Actual
for
8/15/2019
Actual
for
8/16/2019
Actual
for
8/17/2019
COMPOSITE TEMPERATURE
Historical Average for current day: 70.4
83.176.970.2
Demand
On-System Demand2,2722,0931,667
Off-System Deliveries
SoCal Gas (KRS)467443357
Southwest Gas552
Kern River GT - HDL36360
Transmission Shrinkage303130
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
234233258
Wild Goose Storage00345
Central Valley Storage000
Lodi Storage0070
Gill Ranch Storage0082
TOTAL SYSTEM DEMAND3,0442,8402,810
Supply
Interconnect Supply
Gas Transmission Northwest1,2861,2741,323
Ruby772838737
California Production272526
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett009
Southern Trails000
El Paso Natural Gas441446469
Transwestern248251226
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage115-0-0
Central Valley Storage1233835
Lodi Storage4234-0
Gill Ranch Storage535-0
TOTAL SYSTEM SUPPLY3,1072,9102,824
INVENTORY CHANGE
(Supply - Demand)
637014
TOTAL CUSTOMER IMBALANCE13313065

*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
8/15/2019
Actual
for
8/16/2019
Actual
for
8/17/2019
Injection
PG&E Storage
Core and Market Center
344372371
Wild Goose Storage338366469
Central Valley Storage5515
Lodi Storage4865124
Gill Ranch Storage327762
Pipeline Balancing Injection505480
Withdrawal
PG&E Storage
Core and Market Center
174161161
Wild Goose Storage464364117
Central Valley Storage1094848
Lodi Storage979258
Gill Ranch Storage851123
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**2,6472,7852,846
PG&E Total Gas in Storage74,20074,43474,699

*Until yesterday's final figures are released, all numbers (expressed in MMcf/d) 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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