Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Saturday, May 28, 2022 at 7:22 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
5/26/2022No OFO in Effect
5/27/2022No OFO in Effect
5/28/2022No OFO in Effect
5/29/2022No 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 09:33 PM PT

Last updated for the Gas Day of 05/28/2022
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
MMcf5/25/20225/26/20225/27/20225/28/20225/29/20225/30/20225/31/2022
4750
4700
4650
4600
4550
4500
4450
4400
4350 4374
4300 4328 4340
4250 4266
420042194224 4203
4150
4100
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
5/28/2022
Forecast
for
5/29/2022
Forecast
for
5/30/2022
Forecast
for
5/31/2022
Beginning Inventory4266420343284374
Ending Inventory4203432843744340
Inventory Change-6312546-34
 
Upper Limit4400440044004400
Difference*
(Upper Limit - Ending Inventory)
197722660
 
Lower Limit4000400040004000
Difference*
(Ending Inventory - Lower Limit)
203328374340

*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 09:33 PM PT

Last updated for the Gas Day of 05/28/2022
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
5/28/2022
Forecast
for
5/29/2022
Forecast
for
5/30/2022
Forecast
for
5/31/2022
COMPOSITE TEMPERATURE
Historical Average for current day: 64.5
63.362.263.167.9
Demand
On-System Demand1,2151,2401,3201,400
Off-System Deliveries
SoCal Gas (KRS)226227227227
Southwest Gas4444
Kern River GT - HDL0000
Transmission Shrinkage29292929
Injection
PG&E Storage Injection (407 Maximum)*
Core, Market Center, and Pipeline Balancing
412212212212
Wild Goose Storage312314314314
Central Valley Storage79797979
Lodi Storage155157157157
Gill Ranch Storage38383838
TOTAL SYSTEM DEMAND2,4702,3002,3802,460
Supply
Interconnect Supply
Gas Transmission Northwest1,4551,4651,4651,465
Ruby390390390390
California Production26262626
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL-0-0-0-0
Kern River GT - Daggett8111
Southern Trails0000
El Paso Natural Gas201216216216
Transwestern326328328328
Withdrawal
PG&E Storage Withdrawal (858 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
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 SUPPLY2,4072,4262,4262,426
INVENTORY CHANGE
(Supply - Demand)
-6312546-34
TOTAL CUSTOMER IMBALANCE12312141-39

*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
5/28/2022
Forecast
for
5/29/2022
Forecast
for
5/30/2022
Forecast
for
5/31/2022
Injection
PG&E Storage
Core and Market Center
235235235235
Wild Goose Storage507509509509
Central Valley Storage79797979
Lodi Storage284287287287
Gill Ranch Storage39393939
Pipeline Balancing Injection200000
Withdrawal
PG&E Storage
Core and Market Center
23232323
Wild Goose Storage195195195195
Central Valley Storage-0-0-0-0
Lodi Storage129129129129
Gill Ranch Storage1111
Pipeline Balancing Withdrawal0000

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

Actual
for
5/25/2022
Actual
for
5/26/2022
Actual
for
5/27/2022
COMPOSITE TEMPERATURE
Historical Average for current day: 64.5
75.565.264.1
Demand
On-System Demand1,7431,5621,324
Off-System Deliveries
SoCal Gas (KRS)252263228
Southwest Gas334
Kern River GT - HDL000
Transmission Shrinkage292929
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
125327430
Wild Goose Storage19586150
Central Valley Storage02379
Lodi Storage07989
Gill Ranch Storage343940
TOTAL SYSTEM DEMAND2,3822,4132,373
Supply
Interconnect Supply
Gas Transmission Northwest1,4191,4681,462
Ruby428392406
California Production242625
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett020
Southern Trails000
El Paso Natural Gas234213218
Transwestern291316303
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage-0-0-0
Central Valley Storage10-0-0
Lodi Storage24-0-0
Gill Ranch Storage-0-0-0
TOTAL SYSTEM SUPPLY2,4302,4182,415
INVENTORY CHANGE
(Supply - Demand)
48542
TOTAL CUSTOMER IMBALANCE48143277

*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
5/25/2022
Actual
for
5/26/2022
Actual
for
5/27/2022
Injection
PG&E Storage
Core and Market Center
198211240
Wild Goose Storage444395380
Central Valley Storage303079
Lodi Storage109215225
Gill Ranch Storage404141
Pipeline Balancing Injection0174228
Withdrawal
PG&E Storage
Core and Market Center
675737
Wild Goose Storage246303224
Central Valley Storage48-0-0
Lodi Storage132138130
Gill Ranch Storage511
Pipeline Balancing Withdrawal600
Balancing Gas
Imbalance Gas in Storage**1,8982,0612,349
PG&E Total Gas in Storage8,2398,3648,692

*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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