Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Monday, October 25, 2021 at 7:42 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
10/23/2021System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
10/24/2021System Wide OFO in Effect0% Stage 1 at $ .25 /Dth High Inventory
10/25/2021No OFO in Effect
10/26/2021No 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 10:43 AM PT

Last updated for the Gas Day of 10/25/2021
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
MMcf10/22/202110/23/202110/24/202110/25/202110/26/202110/27/202110/28/2021
4750
4700
4650
4600
4550
4500
4450
4400
4350 4382
4300
4250 4258
42004241
4150 4170 4158
4100 4127
4050 4093
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
10/25/2021
Forecast
for
10/26/2021
Forecast
for
10/27/2021
Forecast
for
10/28/2021
Beginning Inventory4127409341584258
Ending Inventory4093415842584382
Inventory Change-3465100124
 
Upper Limit4350435043504350
Difference*
(Upper Limit - Ending Inventory)
25719292-32
 
Lower Limit4000400040004000
Difference*
(Ending Inventory - Lower Limit)
93158258382

*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 1, posted 10:43 AM PT

Last updated for the Gas Day of 10/25/2021
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
10/25/2021
Forecast
for
10/26/2021
Forecast
for
10/27/2021
Forecast
for
10/28/2021
COMPOSITE TEMPERATURE
Historical Average for current day: 61.3
56.557.760.361.7
Demand
On-System Demand2205214520552030
Off-System Deliveries
SoCal Gas (KRS)33565656
Southwest Gas3333
Kern River GT - HDL0000
Transmission Shrinkage27272727
Injection
PG&E Storage Injection (214 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage16960125125
Central Valley Storage0000
Lodi Storage13875125125
Gill Ranch Storage9565656
TOTAL SYSTEM DEMAND2584242224472422
Supply
Interconnect Supply
Gas Transmission Northwest1165116511651165
Ruby377377377377
California Production27272727
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL114114114114
Kern River GT - Daggett3333
Southern Trails0000
El Paso Natural Gas472472472472
Transwestern43434343
Withdrawal
PG&E Storage Withdrawal (398 Maximum)*
Core, Market Center, and Pipeline Balancing
348286345345
Wild Goose Storage-0-0-0-0
Central Valley Storage-0-0-0-0
Lodi Storage-0-0-0-0
Gill Ranch Storage-0-0-0-0
TOTAL SYSTEM SUPPLY2549248725462546
INVENTORY CHANGE
(Supply - Demand)
-3465100124
TOTAL CUSTOMER IMBALANCE-175165075

*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
10/25/2021
Forecast
for
10/26/2021
Forecast
for
10/27/2021
Forecast
for
10/28/2021
Injection
PG&E Storage
Core and Market Center
241209149149
Wild Goose Storage48660125125
Central Valley Storage0000
Lodi Storage18975125125
Gill Ranch Storage110110110110
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
493495494494
Wild Goose Storage317000
Central Valley Storage-0-0-0-0
Lodi Storage50000
Gill Ranch Storage54545454
Pipeline Balancing Withdrawal143000

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

Actual
for
10/22/2021
Actual
for
10/23/2021
Actual
for
10/24/2021
COMPOSITE TEMPERATURE
Historical Average for current day: 61.3
59.460.159.3
Demand
On-System Demand193818451959
Off-System Deliveries
SoCal Gas (KRS)455042
Southwest Gas444
Kern River GT - HDL000
Transmission Shrinkage242627
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
1200
Wild Goose Storage121275318
Central Valley Storage000
Lodi Storage0182199
Gill Ranch Storage294839
TOTAL SYSTEM DEMAND217324312588
Supply
Interconnect Supply
Gas Transmission Northwest114211571160
Ruby389388390
California Production282827
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL57105109
Kern River GT - Daggett000
Southern Trails000
El Paso Natural Gas346454467
Transwestern305245
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
92176346
Wild Goose Storage-0-0-0
Central Valley Storage-0-0-0
Lodi Storage79-0-0
Gill Ranch Storage-0-0-0
TOTAL SYSTEM SUPPLY216323602545
INVENTORY CHANGE
(Supply - Demand)
-10-71-43
TOTAL CUSTOMER IMBALANCE22128-130

*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
10/22/2021
Actual
for
10/23/2021
Actual
for
10/24/2021
Injection
PG&E Storage
Core and Market Center
215207207
Wild Goose Storage448607607
Central Valley Storage000
Lodi Storage6240252
Gill Ranch Storage82111110
Pipeline Balancing Injection2021100
Withdrawal
PG&E Storage
Core and Market Center
498493495
Wild Goose Storage332322298
Central Valley Storage-0-0-0
Lodi Storage925950
Gill Ranch Storage735454
Pipeline Balancing Withdrawal0068
Balancing Gas
Imbalance Gas in Storage**403840503962
PG&E Total Gas in Storage147731469214516

*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 5.0 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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